Hi..I am using Xceed DataGrid For WPF 3.5 professional edition.

I am binding a combobox as cell editor through C# code and not throgh XAML. The selected value of the combobox is not retained in the cell after the edit. I want to set the SelectedValueProperty so that it will retain the selected value, but dont know what should i set it to?

System.Windows.FrameworkElementFactory comboBox = new System.Windows.FrameworkElementFactory(typeof(Xceed.Wpf.Controls.NavigableComboBox));

comboBox.SetValue(Xceed.Wpf.Controls.NavigableComboBox.ItemsSourceProperty, columnInfo.DomainValues.DefaultView);

comboBox.SetValue(Xceed.Wpf.Controls.NavigableComboBox.DisplayMemberPathProperty, "DomainValue");

comboBox.SetValue(Xceed.Wpf.Controls.NavigableComboBox.SelectedValuePathProperty, "DomainID");

//comboBox.SetValue(Xceed.Wpf.Controls.NavigableComboBox.SelectedValueProperty, "Xceed.Wpf.DataGrid.CellEditorBinding"); ???

dataGrid.Columns[columnInfo.Code].CellEditor = new CellEditor();

dataGrid.Columns[columnInfo.Code].CellEditor.EditTemplate = new System.Windows.DataTemplate();

I have gone throgh lot of documentation and posts, but did not find 'what to set' in SelectedValueProperty, through C#. Please help.

Hello,

     Kindly find my explanation as below:

Step 1:

In Xaml, have the Combobox as Cell Editor in the Resources

<xcdg:CellEditor x:Key="statusEditor">
            <xcdg:CellEditor.EditTemplate>
                <DataTemplate>
                    <ComboBox BorderThickness="0"
                            x:Name="cmbStatus"
                            MinHeight="20"
                            VerticalContentAlignment="Top"
                            DisplayMemberPath="Enum_Value"
                            SelectedValuePath="Enum_ID"
                            Text="{xcdg:CellEditorBinding}" 
                            FocusVisualStyle="{x:Null}"
                            Loaded="ComboBox_Loaded"
                            SelectionChanged="cmb_SelectionChanged">
                        <ComboBox.Resources>
                            <Style TargetType="Popup">
                                <Setter Property="TextElement.Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" />
                            </Style>
                        </ComboBox.Resources>
                    </ComboBox>
                </DataTemplate>
            </xcdg:CellEditor.EditTemplate>
            <xcdg:CellEditor.ActivationGestures>
                <xcdg:TextInputActivationGesture/>
            </xcdg:CellEditor.ActivationGestures>
        </xcdg:CellEditor>

Step 2: Declare the Columns as you want to bind the combobox to the above cell editor

  <xcdg:Column FieldName="Status" x:Key="colEntityStatus"  Title="Status" CellEditor="{StaticResource statusEditor}" >
        </xcdg:Column>

Now all you have to do in the .cs file:

Step 3

   protected void ComboBox_Loaded(object sender, RoutedEventArgs e)
        {
            ComboBox cmb = sender as ComboBox;

            if (cmb != null)
            {

             cmb.SelectionChanged += new SelectionChangedEventHandler(cmb_SelectionChanged);
                                    cmb.ItemsSource = dt.DefaultView; //your itemssource
                                    if (drdgCurrentItem != null)
                                        cmb.SelectedValue = 123; //(Default value)

            }

 Step 4:

  protected void cmb_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            ComboBox cmb = sender as ComboBox;
            if (cmb != null)
            {
                if (Convert.ToInt32(cmb.SelectedValue) > 0)
                {

                    //you can make changes to the DataRowView which you are inserting or editing 

                   if (drdgCurrentItem != null)
                                drdgCurrentItem["Entity_StatusID"] = cmb.SelectedValue;

                }

 Thanks,

Paras Sanghani

Hi Paras,

I have a one related problem.

I am tring to do like below

<xcdg:CellEditor x:Key="ProductsCellEditor">

<xcdg:CellEditor.EditTemplate>

<DataTemplate>

<Grid>

<ComboBox ItemsSource="{Binding RelativeSource={RelativeSource Self}, Path=DataGridControl.DataContext.Products}"/>

</Grid>

</DataTemplate>

</xcdg:CellEditor.EditTemplate>

</xcdg:CellEditor>

<xcdg:DataGridControl.Columns>

<xcdg:Column FieldName="Product" Title="Product" ReadOnly="False" CellEditor="{StaticResource ProductsCellEditor}" TextWrapping="Wrap" Width="80" />

</xcdg:DataGridControl.Columns>
 

But its not able to see anything in the combobox. Its not populating the Products in editer.

What is wrong here ?

Thanks

Ashish