#### [PromptPlus](PromptPlus.md 'PromptPlus')
### [PromptPlusLibrary](PromptPlusLibrary.md 'PromptPlusLibrary')
## ITableMultiSelectControl\ Interface
Defines the fluent API used to configure and run the TableMultiSelect control\.
The TableMultiSelect control displays items as a navigable table and allows the user
to mark/unmark multiple rows for selection, returning the checked rows as an array\.
```csharp
public interface ITableMultiSelectControl
```
#### Type parameters
`T`
The type of items displayed as table rows\.
### Remarks
At least one column \([AddColumn\(string, Func<T,object>, Func<object,string>, Nullable<int>, ColumnAlignment, bool\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.AddColumn(string,System.Func_T,object_,System.Func_object,string_,System.Nullable_int_,PromptPlusLibrary.ColumnAlignment,bool) 'PromptPlusLibrary\.ITableMultiSelectControl\\.AddColumn\(string, System\.Func\, System\.Func\, System\.Nullable\, PromptPlusLibrary\.ColumnAlignment, bool\)')\) and one item \([AddItem\(T, bool, bool\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.AddItem(T,bool,bool) 'PromptPlusLibrary\.ITableMultiSelectControl\\.AddItem\(T, bool, bool\)') or
[AddItems\(IEnumerable<T>, bool, bool\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.AddItems(System.Collections.Generic.IEnumerable_T_,bool,bool) 'PromptPlusLibrary\.ITableMultiSelectControl\\.AddItems\(System\.Collections\.Generic\.IEnumerable\, bool, bool\)')\) must be configured before [Run\(CancellationToken\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Run(System.Threading.CancellationToken) 'PromptPlusLibrary\.ITableMultiSelectControl\\.Run\(System\.Threading\.CancellationToken\)') is called;
otherwise a [System\.ComponentModel\.DataAnnotations\.ValidationException](https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.validationexception 'System\.ComponentModel\.DataAnnotations\.ValidationException') is thrown\.
### Methods
## ITableMultiSelectControl\\.AddColumn\(string, Func\, Func\, Nullable\, ColumnAlignment, bool\) Method
Adds a column definition to the table\. At least one column must be added before [Run\(CancellationToken\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Run(System.Threading.CancellationToken) 'PromptPlusLibrary\.ITableMultiSelectControl\\.Run\(System\.Threading\.CancellationToken\)')\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl AddColumn(string header, System.Func selector, System.Func? formatter=null, System.Nullable width=null, PromptPlusLibrary.ColumnAlignment alignment=PromptPlusLibrary.ColumnAlignment.Left, bool isFilterable=false);
```
#### Parameters
`header` [System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')
Column header text\. Cannot be [null](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/keywords/null'), empty, or whitespace\.
`selector` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.Object](https://learn.microsoft.com/en-us/dotnet/api/system.object 'System\.Object')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
Function that extracts the cell value from a row item\.
`formatter` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.Object](https://learn.microsoft.com/en-us/dotnet/api/system.object 'System\.Object')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
Optional function that converts the raw cell value to its display string\.
`width` [System\.Nullable<](https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 'System\.Nullable\`1')[System\.Int32](https://learn.microsoft.com/en-us/dotnet/api/system.int32 'System\.Int32')[>](https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 'System\.Nullable\`1')
Fixed column width in characters\. [null](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/keywords/null') = auto\.
`alignment` [ColumnAlignment](ColumnAlignment.md 'PromptPlusLibrary\.ColumnAlignment')
Cell content alignment\. Default is [Left](ColumnAlignment.md#PromptPlusLibrary.ColumnAlignment.Left 'PromptPlusLibrary\.ColumnAlignment\.Left')\.
`isFilterable` [System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')
When [true](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/bool 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/builtin\-types/bool'), cell values participate in filter matching\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.AddItem\(T, bool, bool\) Method
Adds a single row item to the table\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl AddItem(T value, bool ischecked=false, bool disable=false);
```
#### Parameters
`value` [T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')
The row value\. Cannot be [null](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/keywords/null')\.
`ischecked` [System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')
When [true](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/bool 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/builtin\-types/bool') the row starts pre\-checked\.
`disable` [System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')
When [true](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/bool 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/builtin\-types/bool') the row is shown but cannot be toggled\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.AddItems\(IEnumerable\, bool, bool\) Method
Adds multiple row items to the table\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl AddItems(System.Collections.Generic.IEnumerable values, bool ischecked=false, bool disable=false);
```
#### Parameters
`values` [System\.Collections\.Generic\.IEnumerable<](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')
The row values\. Cannot be [null](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/keywords/null')\.
`ischecked` [System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')
When [true](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/bool 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/builtin\-types/bool') all rows start pre\-checked\.
`disable` [System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')
When [true](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/bool 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/builtin\-types/bool') all rows are shown but cannot be toggled\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.ChangeDescription\(Func\\) Method
Registers a synchronous callback that provides the description text shown below
the table whenever the cursor moves to a different row\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl ChangeDescription(System.Func value);
```
#### Parameters
`value` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
A function that receives the focused row and returns the description text\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.ChangeDescriptionAsync\(Func\\>\) Method
Asynchronous counterpart of [ChangeDescription\(Func<T,string>\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.ChangeDescription(System.Func_T,string_) 'PromptPlusLibrary\.ITableMultiSelectControl\\.ChangeDescription\(System\.Func\\)')\.
The task is awaited synchronously \(blocking\) on the UI thread\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl ChangeDescriptionAsync(System.Func> value);
```
#### Parameters
`value` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.Threading\.Tasks\.Task<](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[>](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
An asynchronous function that receives the focused row and returns the description text\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.Default\(IEnumerable\\) Method
Pre\-marks all matching items as checked and positions the cursor on the first match\.
Any item previously added with `ischecked = true` retains its state when not
present in [values](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Default(System.Collections.Generic.IEnumerable_T_).values 'PromptPlusLibrary\.ITableMultiSelectControl\\.Default\(System\.Collections\.Generic\.IEnumerable\\)\.values')\. Values in this list take precedence: items
are marked checked regardless of `ischecked` at [AddItem\(T, bool, bool\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.AddItem(T,bool,bool) 'PromptPlusLibrary\.ITableMultiSelectControl\\.AddItem\(T, bool, bool\)') time\.
Disabled items matching the list are also marked checked \(read\-only visual\)\.
Has no effect when [values](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Default(System.Collections.Generic.IEnumerable_T_).values 'PromptPlusLibrary\.ITableMultiSelectControl\\.Default\(System\.Collections\.Generic\.IEnumerable\\)\.values') is empty\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl Default(System.Collections.Generic.IEnumerable values);
```
#### Parameters
`values` [System\.Collections\.Generic\.IEnumerable<](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')
The values to pre\-check\. Matched via the comparer set by [DefaultMatchBy\(Func<T,T,bool>\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.DefaultMatchBy(System.Func_T,T,bool_) 'PromptPlusLibrary\.ITableMultiSelectControl\\.DefaultMatchBy\(System\.Func\\)')\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.DefaultMatchBy\(Func\\) Method
Overrides the equality comparer used to match default and history values against the
loaded items\. Default is [System\.Collections\.Generic\.EqualityComparer<>\.Default](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.equalitycomparer-1.default 'System\.Collections\.Generic\.EqualityComparer\`1\.Default')\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl DefaultMatchBy(System.Func comparer);
```
#### Parameters
`comparer` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')[System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')
A function that returns `true` when two items are considered equal\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.EnableHistory\(string, Action\\) Method
Enables persistent history stored in the specified file\.
The checked array is serialized as JSON and restored on the next run\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl EnableHistory(string filename, System.Action? options=null);
```
#### Parameters
`filename` [System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')
The history file name\. Cannot be `null`\.
`options` [System\.Action<](https://learn.microsoft.com/en-us/dotnet/api/system.action-1 'System\.Action\`1')[IHistoryOptions](IHistoryOptions.md 'PromptPlusLibrary\.IHistoryOptions')[>](https://learn.microsoft.com/en-us/dotnet/api/system.action-1 'System\.Action\`1')
An optional callback to configure [IHistoryOptions](IHistoryOptions.md 'PromptPlusLibrary\.IHistoryOptions')\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.Filter\(FilterMode, FilterTableMode\) Method
Enables and configures the row filter feature\.
Default is [Disabled](FilterMode.md#PromptPlusLibrary.FilterMode.Disabled 'PromptPlusLibrary\.FilterMode\.Disabled') with [Answer](FilterTableMode.md#PromptPlusLibrary.FilterTableMode.Answer 'PromptPlusLibrary\.FilterTableMode\.Answer')\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl Filter(PromptPlusLibrary.FilterMode value, PromptPlusLibrary.FilterTableMode filterby=PromptPlusLibrary.FilterTableMode.Answer);
```
#### Parameters
`value` [FilterMode](FilterMode.md 'PromptPlusLibrary\.FilterMode')
The [FilterMode](FilterMode.md 'PromptPlusLibrary\.FilterMode') to apply\.
`filterby` [FilterTableMode](FilterTableMode.md 'PromptPlusLibrary\.FilterTableMode')
Determines which data the filter is matched against\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.HideElements\(HideTable\) Method
Specifies which regions of the table are hidden\.
Default is [None](HideTable.md#PromptPlusLibrary.HideTable.None 'PromptPlusLibrary\.HideTable\.None') \(all regions visible\)\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl HideElements(PromptPlusLibrary.HideTable borders);
```
#### Parameters
`borders` [HideTable](HideTable.md 'PromptPlusLibrary\.HideTable')
A [HideTable](HideTable.md 'PromptPlusLibrary\.HideTable') flags value that identifies the regions to hide\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.HorizontalScroll\(HorizontalScrollMode\) Method
Configures how columns are scrolled horizontally when they do not all fit on screen\.
Default is [Full](HorizontalScrollMode.md#PromptPlusLibrary.HorizontalScrollMode.Full 'PromptPlusLibrary\.HorizontalScrollMode\.Full')\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl HorizontalScroll(PromptPlusLibrary.HorizontalScrollMode mode);
```
#### Parameters
`mode` [HorizontalScrollMode](HorizontalScrollMode.md 'PromptPlusLibrary\.HorizontalScrollMode')
The desired [HorizontalScrollMode](HorizontalScrollMode.md 'PromptPlusLibrary\.HorizontalScrollMode')\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.Interaction\\(IEnumerable\, Action\\>\) Method
Iterates synchronously over [items](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Interaction_T1_(System.Collections.Generic.IEnumerable_T1_,System.Action_T1,PromptPlusLibrary.ITableMultiSelectControl_T__).items 'PromptPlusLibrary\.ITableMultiSelectControl\\.Interaction\\(System\.Collections\.Generic\.IEnumerable\, System\.Action\\>\)\.items'), invoking
[interactionAction](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Interaction_T1_(System.Collections.Generic.IEnumerable_T1_,System.Action_T1,PromptPlusLibrary.ITableMultiSelectControl_T__).interactionAction 'PromptPlusLibrary\.ITableMultiSelectControl\\.Interaction\\(System\.Collections\.Generic\.IEnumerable\, System\.Action\\>\)\.interactionAction') for each element, giving the caller a chance
to add rows programmatically via [AddItem\(T, bool, bool\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.AddItem(T,bool,bool) 'PromptPlusLibrary\.ITableMultiSelectControl\\.AddItem\(T, bool, bool\)') or [AddItems\(IEnumerable<T>, bool, bool\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.AddItems(System.Collections.Generic.IEnumerable_T_,bool,bool) 'PromptPlusLibrary\.ITableMultiSelectControl\\.AddItems\(System\.Collections\.Generic\.IEnumerable\, bool, bool\)')\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl Interaction(System.Collections.Generic.IEnumerable items, System.Action> interactionAction);
```
#### Type parameters
`T1`
The type of elements in the input sequence\.
#### Parameters
`items` [System\.Collections\.Generic\.IEnumerable<](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')[T1](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Interaction_T1_(System.Collections.Generic.IEnumerable_T1_,System.Action_T1,PromptPlusLibrary.ITableMultiSelectControl_T__).T1 'PromptPlusLibrary\.ITableMultiSelectControl\\.Interaction\\(System\.Collections\.Generic\.IEnumerable\, System\.Action\\>\)\.T1')[>](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')
The input sequence to iterate\. Cannot be `null`\.
`interactionAction` [System\.Action<](https://learn.microsoft.com/en-us/dotnet/api/system.action-2 'System\.Action\`2')[T1](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Interaction_T1_(System.Collections.Generic.IEnumerable_T1_,System.Action_T1,PromptPlusLibrary.ITableMultiSelectControl_T__).T1 'PromptPlusLibrary\.ITableMultiSelectControl\\.Interaction\\(System\.Collections\.Generic\.IEnumerable\, System\.Action\\>\)\.T1')[,](https://learn.microsoft.com/en-us/dotnet/api/system.action-2 'System\.Action\`2')[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[>](https://learn.microsoft.com/en-us/dotnet/api/system.action-2 'System\.Action\`2')
The action invoked for each element\. Cannot be `null`\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.InteractionAsync\\(IEnumerable\, Func\,Task\>\) Method
Asynchronous counterpart of [Interaction<T1>\(IEnumerable<T1>, Action<T1,ITableMultiSelectControl<T>>\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Interaction_T1_(System.Collections.Generic.IEnumerable_T1_,System.Action_T1,PromptPlusLibrary.ITableMultiSelectControl_T__) 'PromptPlusLibrary\.ITableMultiSelectControl\\.Interaction\\(System\.Collections\.Generic\.IEnumerable\, System\.Action\\>\)')\.
Each task returned by [interactionAction](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.InteractionAsync_T1_(System.Collections.Generic.IEnumerable_T1_,System.Func_T1,PromptPlusLibrary.ITableMultiSelectControl_T_,System.Threading.Tasks.Task_).interactionAction 'PromptPlusLibrary\.ITableMultiSelectControl\\.InteractionAsync\\(System\.Collections\.Generic\.IEnumerable\, System\.Func\,System\.Threading\.Tasks\.Task\>\)\.interactionAction') is awaited synchronously \(blocking\)\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl InteractionAsync(System.Collections.Generic.IEnumerable items, System.Func,System.Threading.Tasks.Task> interactionAction);
```
#### Type parameters
`T1`
The type of elements in the input sequence\.
#### Parameters
`items` [System\.Collections\.Generic\.IEnumerable<](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')[T1](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.InteractionAsync_T1_(System.Collections.Generic.IEnumerable_T1_,System.Func_T1,PromptPlusLibrary.ITableMultiSelectControl_T_,System.Threading.Tasks.Task_).T1 'PromptPlusLibrary\.ITableMultiSelectControl\\.InteractionAsync\\(System\.Collections\.Generic\.IEnumerable\, System\.Func\,System\.Threading\.Tasks\.Task\>\)\.T1')[>](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.ienumerable-1 'System\.Collections\.Generic\.IEnumerable\`1')
The input sequence to iterate\. Cannot be `null`\.
`interactionAction` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')[T1](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.InteractionAsync_T1_(System.Collections.Generic.IEnumerable_T1_,System.Func_T1,PromptPlusLibrary.ITableMultiSelectControl_T_,System.Threading.Tasks.Task_).T1 'PromptPlusLibrary\.ITableMultiSelectControl\\.InteractionAsync\\(System\.Collections\.Generic\.IEnumerable\, System\.Func\,System\.Threading\.Tasks\.Task\>\)\.T1')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')[System\.Threading\.Tasks\.Task](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task 'System\.Threading\.Tasks\.Task')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-3 'System\.Func\`3')
The asynchronous action invoked for each element\. Cannot be `null`\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.LayoutMode\(TableLayoutMode\) Method
Sets the table layout mode that controls the box\-drawing characters used for borders\.
Default is [SingleBox](TableLayoutMode.md#PromptPlusLibrary.TableLayoutMode.SingleBox 'PromptPlusLibrary\.TableLayoutMode\.SingleBox')\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl LayoutMode(PromptPlusLibrary.TableLayoutMode mode);
```
#### Parameters
`mode` [TableLayoutMode](TableLayoutMode.md 'PromptPlusLibrary\.TableLayoutMode')
The desired [TableLayoutMode](TableLayoutMode.md 'PromptPlusLibrary\.TableLayoutMode')\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.Options\(Action\\) Method
Applies global control options via the [IControlOptions](IControlOptions.md 'PromptPlusLibrary\.IControlOptions') fluent API\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl Options(System.Action options);
```
#### Parameters
`options` [System\.Action<](https://learn.microsoft.com/en-us/dotnet/api/system.action-1 'System\.Action\`1')[IControlOptions](IControlOptions.md 'PromptPlusLibrary\.IControlOptions')[>](https://learn.microsoft.com/en-us/dotnet/api/system.action-1 'System\.Action\`1')
An action that configures the [IControlOptions](IControlOptions.md 'PromptPlusLibrary\.IControlOptions') instance\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
#### Exceptions
[System\.ArgumentNullException](https://learn.microsoft.com/en-us/dotnet/api/system.argumentnullexception 'System\.ArgumentNullException')
Thrown when [options](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.Options(System.Action_PromptPlusLibrary.IControlOptions_).options 'PromptPlusLibrary\.ITableMultiSelectControl\\.Options\(System\.Action\\)\.options') is [null](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/keywords/null')\.
## ITableMultiSelectControl\\.PageSize\(byte\) Method
Sets the maximum number of rows per page\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl PageSize(byte value);
```
#### Parameters
`value` [System\.Byte](https://learn.microsoft.com/en-us/dotnet/api/system.byte 'System\.Byte')
Maximum rows per page\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.PredicateChecked\(Func\\) Method
Sets a synchronous predicate that determines whether a row can be checked\.
Returns `false` to prevent checking and show a generic error message\.
Only evaluated when marking a row as checked — unchecking an already\-checked row is
always allowed \(subject only to it not being disabled\) and never runs this predicate\.
Replaces any previously registered asynchronous predicate\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl PredicateChecked(System.Func validselect);
```
#### Parameters
`validselect` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
A predicate that returns `true` when the row can be checked\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.PredicateCheckedAsync\(Func\\>\) Method
Asynchronous counterpart of [PredicateChecked\(Func<T,bool>\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.PredicateChecked(System.Func_T,bool_) 'PromptPlusLibrary\.ITableMultiSelectControl\\.PredicateChecked\(System\.Func\\)')\.
The predicate is evaluated synchronously \(blocking\) on the UI thread\.
Replaces any previously registered synchronous predicate\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl PredicateCheckedAsync(System.Func> validselect);
```
#### Parameters
`validselect` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.Threading\.Tasks\.Task<](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[System\.Boolean](https://learn.microsoft.com/en-us/dotnet/api/system.boolean 'System\.Boolean')[>](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
An asynchronous predicate that returns `true` when the row can be checked\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.Range\(int, Nullable\\) Method
Constrains the number of checked items at confirmation time\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl Range(int minvalue, System.Nullable maxvalue=null);
```
#### Parameters
`minvalue` [System\.Int32](https://learn.microsoft.com/en-us/dotnet/api/system.int32 'System\.Int32')
Minimum number of checked items required\. Must be \>= 0\.
`maxvalue` [System\.Nullable<](https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 'System\.Nullable\`1')[System\.Int32](https://learn.microsoft.com/en-us/dotnet/api/system.int32 'System\.Int32')[>](https://learn.microsoft.com/en-us/dotnet/api/system.nullable-1 'System\.Nullable\`1')
Maximum number of checked items allowed\. [null](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/null 'https://docs\.microsoft\.com/en\-us/dotnet/csharp/language\-reference/keywords/null') = unlimited\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.Run\(CancellationToken\) Method
Runs the TableMultiSelect control, blocking until the user confirms or cancels\.
```csharp
PromptPlusLibrary.ResultPrompt Run(System.Threading.CancellationToken token=default(System.Threading.CancellationToken));
```
#### Parameters
`token` [System\.Threading\.CancellationToken](https://learn.microsoft.com/en-us/dotnet/api/system.threading.cancellationtoken 'System\.Threading\.CancellationToken')
Cancellation token\. Defaults to [System\.Threading\.CancellationToken\.None](https://learn.microsoft.com/en-us/dotnet/api/system.threading.cancellationtoken.none 'System\.Threading\.CancellationToken\.None')\.
#### Returns
[PromptPlusLibrary\.ResultPrompt<](ResultPrompt_T_.md 'PromptPlusLibrary\.ResultPrompt\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[\[\]](https://learn.microsoft.com/en-us/dotnet/api/system.array 'System\.Array')[>](ResultPrompt_T_.md 'PromptPlusLibrary\.ResultPrompt\')
A [ResultPrompt<T>](ResultPrompt_T_.md 'PromptPlusLibrary\.ResultPrompt\') wrapping a `T[]` that contains all checked row values\.
## ITableMultiSelectControl\\.Styles\(TableMultiSelectStyles, Style\) Method
Overrides a specific visual style used by the TableMultiSelect control\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl Styles(PromptPlusLibrary.TableMultiSelectStyles styleType, ConsolePlusLibrary.Style style);
```
#### Parameters
`styleType` [TableMultiSelectStyles](TableMultiSelectStyles.md 'PromptPlusLibrary\.TableMultiSelectStyles')
The [TableMultiSelectStyles](TableMultiSelectStyles.md 'PromptPlusLibrary\.TableMultiSelectStyles') element whose style is overridden\.
`style` [ConsolePlusLibrary\.Style](https://learn.microsoft.com/en-us/dotnet/api/consolepluslibrary.style 'ConsolePlusLibrary\.Style')
The [ConsolePlusLibrary\.Style](https://learn.microsoft.com/en-us/dotnet/api/consolepluslibrary.style 'ConsolePlusLibrary\.Style') to apply\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.TextSelector\(Func\\) Method
Registers a synchronous callback that converts a row value to the answer text
displayed in the header after the control completes\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl TextSelector(System.Func value);
```
#### Parameters
`value` [System\.Func<](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[,](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')[System\.String](https://learn.microsoft.com/en-us/dotnet/api/system.string 'System\.String')[>](https://learn.microsoft.com/en-us/dotnet/api/system.func-2 'System\.Func\`2')
A function that receives the row value and returns its display text\.
#### Returns
[PromptPlusLibrary\.ITableMultiSelectControl<](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')[T](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.T 'PromptPlusLibrary\.ITableMultiSelectControl\\.T')[>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\')
The current [ITableMultiSelectControl<T>](ITableMultiSelectControl_T_.md 'PromptPlusLibrary\.ITableMultiSelectControl\') instance for chaining\.
## ITableMultiSelectControl\\.TextSelectorAsync\(Func\\>\) Method
Asynchronous counterpart of [TextSelector\(Func<T,string>\)](ITableMultiSelectControl_T_.md#PromptPlusLibrary.ITableMultiSelectControl_T_.TextSelector(System.Func_T,string_) 'PromptPlusLibrary\.ITableMultiSelectControl\\.TextSelector\(System\.Func\\)')\.
The task is awaited synchronously \(blocking\) on the UI thread\.
```csharp
PromptPlusLibrary.ITableMultiSelectControl TextSelectorAsync(System.Func