GridView CellValidating/RowValidating events are not firing up

[Sega]

Hi guys!

I have gridview with custom defined style for it's children. But when I set up cellvalidating | rowvalidating event, it's not fire up! Why??

GridView xaml:

<t:RadGridView Grid.Row="2" Style="{StaticResource OverrideDefaultGridViewStyle}" AddingNewDataItem="OnSpecGridViewAddingNewDataItem"
                       ItemsSource="{Binding Specifications, Mode=TwoWay}" x:Name="SpecGridView">

            <t:RadGridView.Resources>
                <DataTemplate x:Key="DraggedItemTemplate">
                    <StackPanel>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{x:Static p:Resources.AddStandardWindow_TextBlock_Dragging}" />
                            <TextBlock Text="{Binding CurrentDraggedItem.SpecificationName}" FontWeight="Bold" />
                        </StackPanel>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding CurrentDropPosition}" FontWeight="Bold" MinWidth="45" Foreground="Gray"/>
                            <TextBlock Text=", (" Foreground="Gray" />
                            <TextBlock Text="{Binding CurrentDraggedOverItem.SpecificationName}" Foreground="Gray" />
                            <TextBlock Text=")" Foreground="Gray" />
                        </StackPanel>
                    </StackPanel>
                </DataTemplate>
            </t:RadGridView.Resources>

            <t:RadGridView.Columns>
                <t:GridViewColumn>
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <t:RadButton Content="X" Click="OnDeleteSpecificationButtonClicked" Style="{StaticResource ButtonCustomStyleRed}" />
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>

                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Specifications}">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox Style="{StaticResource OverrideDefaultTextBoxStyle}" Text="{Binding SpecificationName}"/>
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>

                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Parameter}" Width="20*">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <t:RadComboBox Style="{StaticResource ComboBoxStyle}" ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type t:RadWindow}},
                                            Path=DataContext.Parameters}" SelectedItem="{Binding Parameter}" DisplayMemberPath="ParameterName" />
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>

                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Nominal}" Width="20*">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox Style="{StaticResource OverrideDefaultTextBoxStyle}" KeyDown="OnKeyDown" Text="{Binding Nominal, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}" SourceUpdated="OnNominalOrAccuracySourceUpdated">
                            </TextBox>
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>

                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Accuracy}"
                                  Width="10*" Background="#D8E5F0">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox Style="{StaticResource OverrideDefaultTextBoxStyle}" KeyDown="OnKeyDown" Text="{Binding Accuracy,
                                NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}" SourceUpdated="OnNominalOrAccuracySourceUpdated" />
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>


                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Precision}"
                                      Width="10*"
                                      Background="#D8E5F0">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox KeyDown="OnKeyDown" Text="{Binding Presition, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}" Style="{StaticResource OverrideDefaultTextBoxStyle}">
                            </TextBox>
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>

                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Min}" Width="10*">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox Style="{StaticResource OverrideDefaultTextBoxStyle}" KeyDown="OnKeyDown" Text="{Binding Minimum, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}" SourceUpdated="OnMinOrMaxSourceUpdated">
                            </TextBox>
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>
                <t:GridViewColumn Header="{x:Static p:Resources.AddStandardWindow_Max}" Width="10*">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <TextBox Style="{StaticResource OverrideDefaultTextBoxStyle}" KeyDown="OnKeyDown" Text="{Binding Maximum, NotifyOnSourceUpdated=True, UpdateSourceTrigger=PropertyChanged}" SourceUpdated="OnMinOrMaxSourceUpdated">
                            </TextBox>
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>
                <t:GridViewColumn Width="40">
                    <t:GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <Image Source="/Images/UpDown.png" Height="34" Width="34" Stretch="None"/>
                        </DataTemplate>
                    </t:GridViewColumn.CellTemplate>
                </t:GridViewColumn>



            </t:RadGridView.Columns>
        </t:RadGridView>

P.S. I am not using these events here in this xaml. IS there any work around?

Thank you,
Ihor.

[Vera]

Hello Sega,

 
Actually, CellValidating and RowValidating events fire when cell or row is about to commit new content, which means that the cell/row should be in edit mode. In your case, where you use TextBox in the CellTemplate of a GridViewColumn, the cell/row never gets in edit mode. That is why the events do not occur. I would suggest you to check our Validation help article for a reference. 

Kind regards,
Vera
the Telerik team

[Sega]

Hi Vera! 

Thank you for your help! Does edit mode reachable in my case? How to achieve it?

Thanks!

[Nedyalko Nikolov]

Hi,

Generally, the default template is TextBlock (view mode), because TextBlock requires far less resource in order to render, and cell edit template is TextBox (edit mode). Usually, double click will force RadGridView to put the current cell in edit mode. However, some controls like TextBox handled double click event and RadGridView does not understand that such action is performed.

Kind regards,
Nedyalko Nikolov
the Telerik team