ActivatingCellEditor Event

Raised when a cell editor is about to be activated to allow custom settings to be provided.

Syntax

Visual Basic
C#

'Declaration
 
Public Event ActivatingCellEditor As EventHandler(Of ActivatingCellEditorEventArgs)

'Usage
 
Dim instance As Column
Dim handler As EventHandler(Of ActivatingCellEditorEventArgs)
 
AddHandler instance.ActivatingCellEditor, handler

public event EventHandler<ActivatingCellEditorEventArgs> ActivatingCellEditor

Event Data

The event handler receives an argument of type ActivatingCellEditorEventArgs containing data related to this event. The following ActivatingCellEditorEventArgs properties provide information specific to this event.

Property	Description
Cell
CellEditor	Gets the cell editor that is being activated.
Column
DataItem
DataPath
Row

Example

VB.NET

Private Sub CustomerIDColumn_ActivatingCellEditor( ByVal sender As Object, ByVal e As ActivatingCellEditorEventArgs )
   Dim comboCellEditor As ComboBoxCellEditor = CType( e.CellEditor, ComboBoxCellEditor )
   comboCellEditor.ItemsSource = Data.Customers
 
   ' Set the SelectedValuePath of the ComboBoxCellEditor to ensure the value
   ' returned by the CellEditor is the CustomerID value and not the Customer
   ' instance directly      
   comboCellEditor.SelectedValuePath = "CustomerID"
End Sub

private void CustomerIDColumn_ActivatingCellEditor( object sender, ActivatingCellEditorEventArgs e )
{
   ComboBoxCellEditor comboCellEditor = e.CellEditor as ComboBoxCellEditor;
   comboCellEditor.ItemsSource = Data.Customers;
 
   // Set the SelectedValuePath of the ComboBoxCellEditor to ensure the value
   // returned by the CellEditor is the CustomerID value and not the Customer
   // instance directly      
   comboCellEditor.SelectedValuePath = "CustomerID";
}

XAML

<sldg:DataGridControl x:Name="sldgDataGridControl"
                      ItemsSource="{Binding Path=Orders}">
    <sldg:DataGridControl.Resources>
        <!-- ControlTemplate to display the Value in a foreign source from the primary key -->
        <ControlTemplate x:Key="idDictionaryControlTemplate"
                         TargetType="local:IDDictionary">
            <ContentPresenter Content="{TemplateBinding Value}"
                              ContentTemplate="{TemplateBinding ValueTemplate}"/>
        </ControlTemplate>
 
        <!-- DataTemplate to display a Customer -->
        <DataTemplate x:Key="customerDataTemplate">
            <TextBlock Text="{Binding CompanyName}"/>
        </DataTemplate>
 
        <DataTemplate x:Key="customerIDDataTemplate">
            <!-- Use the IDDictionary to convert the value in the source to an instance of Customer -->
            <local:CustomerIDDictionary ID="{Binding}"
                                        ValueTemplate="{StaticResource customerDataTemplate}"
                                        Template="{StaticResource idDictionaryControlTemplate}"
                                        VerticalAlignment="Top"/>
        </DataTemplate>
    </sldg:DataGridControl.Resources>
    <sldg:DataGridControl.Columns>
        <sldg:Column FieldName="CustomerID"
                     Title="Customer ID"
                     CellEditorType="Xceed.Silverlight.DataGrid.ComboBoxCellEditor"
                     ActivatingCellEditor="CustomerIDColumn_ActivatingCellEditor"
                     CellContentTemplate="{StaticResource customerIDDataTemplate}">
            <sldg:Column.CellEditorStyle>
                <!-- Set the ItemTemplate of the ComboBoxEditor to be the same as the CellContentTemplate -->
                <Style TargetType="sldg:ComboBoxCellEditor">
                    <Setter Property="ItemTemplate"
                  Value="{StaticResource customerDataTemplate}"/>
                </Style>
            </sldg:Column.CellEditorStyle>
        </sldg:Column>
    </sldg:DataGridControl.Columns>
</sldg:DataGridControl>

Requirements

Target Platforms: Windows 7, Windows Vista, Windows XP SP3, Windows Server 2008 family

Reference

Column Class
Column Members

Editing and Inserting Data

Cell Editors