wpf-devexpress-dot-xpf-dot-grid-dot-datacontrolbase-35bc7d4a.md
Gets or sets a column template selector. This is a dependency property.
Namespace : DevExpress.Xpf.Grid
Assembly : DevExpress.Xpf.Grid.v25.2.Core.dll
NuGet Package : DevExpress.Wpf.Grid.Core
public DataTemplateSelector ColumnGeneratorTemplateSelector { get; set; }
Public Property ColumnGeneratorTemplateSelector As DataTemplateSelector
| Type | Description |
|---|---|
| DataTemplateSelector |
A column template selector.
|
You can define columns in a ViewModel and display them in the GridControl. To do this, follow the steps below:
Create a collection of grid columns in a ViewModel and specify a data template that generates columns.
Assign the column collection to the ColumnsSource property and the column template to the ColumnGeneratorTemplate property.
If you have multiple column templates, implement custom logic to choose a template:
<Window.Resources>
<!-- ... -->
<local:ColumnTemplateSelector x:Key="ColumnTemplateSelector"
DefaultColumnTemplate ="{StaticResource DefaultColumnTemplate}"
LookupColumnTemplate ="{StaticResource LookupColumnTemplate}"/>
</Window.Resources>
<dxg:GridControl ...
ColumnsSource="{Binding Columns}"
ColumnGeneratorTemplateSelector="{StaticResource ColumnTemplateSelector}"/>
using System.Windows;
using System.Windows.Controls;
namespace ColumnsSample {
public class ColumnTemplateSelector : DataTemplateSelector {
public DataTemplate DefaultColumnTemplate { get; set; }
public DataTemplate LookupColumnTemplate { get; set; }
public override DataTemplate SelectTemplate(object item, DependencyObject container) {
Column column = item as Column;
if(column == null) return null;
switch(column.Settings) {
case SettingsType.Default:
return DefaultColumnTemplate;
case SettingsType.Lookup:
return LookupColumnTemplate;
}
return null;
}
}
}
Imports System.Windows
Imports System.Windows.Controls
Namespace ColumnsSample
Public Class ColumnTemplateSelector
Inherits DataTemplateSelector
Public Property DefaultColumnTemplate() As DataTemplate
Public Property LookupColumnTemplate() As DataTemplate
Public Overrides Function SelectTemplate(ByVal item As Object, ByVal container As DependencyObject) As DataTemplate
Dim column As Column = TryCast(item, Column)
If column Is Nothing Then
Return Nothing
End If
Select Case column.Settings
Case SettingsType.Default
Return DefaultColumnTemplate
Case SettingsType.Lookup
Return LookupColumnTemplate
End Select
Return Nothing
End Function
End Class
End Namespace
If you specify both the DataControlBase.ColumnGeneratorTemplate and ColumnGeneratorTemplateSelector , the GridControl uses the template the template selector returns.
Refer to the following help topic for more information: How to: Bind the Grid to a Collection of Columns.
The following code snippets (auto-collected from DevExpress Examples) contain references to the ColumnGeneratorTemplateSelector property.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
wpf-data-grid-bind-columns-to-viewmodel-collection/CS/ColumnsSample/MainWindow.xaml#L36
<dxg:GridControl ItemsSource="{Binding Source}" ColumnsSource="{Binding Columns}"
ColumnGeneratorTemplateSelector="{StaticResource ColumnTemplateSelector}">
<dxg:GridControl.View>
wpf-bind-gridcontrol-to-dynamic-data/CS/Unbound_Columns/MainWindow.xaml#L35
<dxg:GridControl
ColumnGeneratorTemplateSelector="{StaticResource selector}"
ColumnsSource="{Binding Columns}"
See Also