Hello,

 Is there any reason why CellEditor won't show up when Columns of grid are created manually? Situation is following: I set EditTrigger on DataGrid, create columns and set CellEditorDisplayConditions, create CellEditor and add it to appropriate column. Once row enters edit mode, CellEditor is not visible. Row is in edit mode, glyph is displayed, and I checked in DataGridCollectionView and data is being edited.

However, if i set AutoCreateColumns to true, and let DataGrid generate columns, do all the CellEditor stuff, then editors are displayed correctly.

I use version 3.5 since that is the one my employer has license for, if version has anything to do with this. DataGridCollectionView is created in identical manner, I haven't noticed any differences between columns in debug, except one private property IsBindingAutoCreated. I even tried changing it in debug, but that didn't change anything.

 Best regards,

Nikola

Hi Nikola,

Probably, the CellEditor’s EditTemplate of the column manually created was not properly implemented or set.  Please note that the Xceed DatagridControl will use default editor based on the field’s DataType if available.

Implementation examples are available on the Included Editors available on the folder: C:\Xceed Samples\Xceed DataGrid for WPF v3.6\CSharp\IncludedEditors.

For example:

…

<xcdg:Column FieldName="Category"

                         Title="ComboBox"

                         Width="125"

                         CellContentTemplate="{StaticResource categoryCellDataTemplate}"

                         CellEditor="{StaticResource categoryEditor}"

                         Visible="{Binding Source={x:Static local:MainPageParams.Singleton},Path=ComboBoxColumnsVisible}" />

…

With

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

      <xcdg:CellEditor.EditTemplate>

         <DataTemplate>

            <ComboBox BorderThickness="0"

                      VerticalContentAlignment="Top"

                      MinHeight="22"

                      ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType=local:MainPage},Path=Departments}"

                      SelectedValue="{xcdg:CellEditorBinding}"

                      FocusVisualStyle="{x:Null}">

               <ComboBox.Resources>

                  <Style TargetType="Popup">

                     <Setter Property="TextElement.Foreground"

                             Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" />

                  </Style>

               </ComboBox.Resources>

            </ComboBox>

         </DataTemplate>

      </xcdg:CellEditor.EditTemplate>

      <!-- Declare the wanted key gesture that will activate the ComboBox CellEditor. -->

      <xcdg:CellEditor.ActivationGestures>

         <xcdg:KeyActivationGesture SystemKey="Down"

                                    Modifiers="Alt" />

         <xcdg:KeyActivationGesture Key="Up"

                                    Modifiers="Alt" />

         <xcdg:KeyActivationGesture Key="F4" />

         <xcdg:KeyActivationGesture Key="Space" />

      </xcdg:CellEditor.ActivationGestures>

   </xcdg:CellEditor>

Hi Mohamed,

thanks for your reply. I found cause of my problem (after entire day unfortunately) if someone needs it. When dynamically creating columns, CellEditors wont appear if you use

CellEditor(string, string, Binding) constructor.

Maybe it would work with some kind of XCeed internal Binding extension.

Best regards,

Nikola

-------------------------------------------

EDIT: I have to correct myself. You can use the constructor, but then pass null as Binding.