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GridViewCell CellStyle background not changing

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GridView

This is a migrated thread and some comments may be shown as answers.

Martin asked on 14 Aug 2009, 11:16 AM

I am trying to change the background colour of certain cells based on the value of the data.

Here are the converter and style resources i use. This is all based on the example given in the documentation and on some other forum posts.

                        <UserControl.Resources>         
                    <cur:AssumedLevelToColour x:Key="convAssumedLevel"/>         
                    <Style x:Key="assumedLevelStyle" TargetType="{x:Type telerik:GridViewCell}">         
                        <Setter Property="Background">         
                            <Setter.Value>         
                                <SolidColorBrush Color="{Binding Path=AssumedLevel, Converter={StaticResource convAssumedLevel}}" />         
                            </Setter.Value>         
                        </Setter>         
                    </Style>         
                </UserControl.Resources>         

AssumedLevelToColour is a simple float to colour converter that returns red, orange or green depending on the level.

And here is the grid view code including the relevant column.

                           <telerik:RadGridView Margin="6,6,6,6" MaxHeight="1000" Name="lstDefenders" Grid.ColumnSpan="3" SelectionChanged="lstDefenders_SelectionChanged"  telerik:StyleManager.Theme="Vista" IsReadOnly="True" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False" ColumnsWidthMode="Auto" MultipleSelect="True" >         
                        <telerik:RadGridView.Columns>         
                            <telerik:GridViewDataColumn HeaderText="Manufacturer" DataMemberBinding="{Binding Manufacturer, Mode=OneWay}" />         
                            <telerik:GridViewDataColumn HeaderText="Product" DataMemberBinding="{Binding Name, Mode=OneWay}" />         
                            <telerik:GridViewDataColumn CellStyle="{StaticResource assumedLevelStyle}" HeaderText="Assumed Level" DataMemberBinding="{Binding AssumedLevel, Mode=OneWay}" />         
                            <telerik:GridViewDataColumn HeaderText="Type" DataMemberBinding="{Binding Type, Mode=OneWay}" />         
                            <telerik:GridViewDataColumn HeaderText="Approval" DataMemberBinding="{Binding Approval, Mode=OneWay}" />         
                            <telerik:GridViewDataColumn HeaderText="Notes" DataMemberBinding="{Binding Notes, Mode=OneWay}" />         
                        </telerik:RadGridView.Columns>         
                    </telerik:RadGridView>         

The list is populated using the ItemsSource property.

The converter is being called correctly but the background colour doesnt change.

I have only noticed this in Q2 SP1, was working in Q1, not sure about Q2.

Thanks,

Martin

9 Answers, 1 is accepted

answered on 20 Aug 2009, 12:26 PM

Hello,

I have downloaded the build (DLL only) BIN35:
RadControls_for_WPF_2009_2_0813_TRIAL_hotfix.zip

and tested the Foreground.

It works, however there is a slight bug with the Foreground:

The data trigger is not aware to a change I make in a cell unless I exit the row the cell is in.
If, for example, I click on another cell on the same row, the foreground stays the same.

This seems to be related to the Foreground, because the FontWeight property DOES change when I click on another cell in
the same row.

<telerik:GridViewDataColumn HeaderText="Size" DataMemberBinding="{Binding Size}">
                    <telerik:GridViewDataColumn.CellStyle>
                        <Style TargetType="telerik:GridViewCell">
                            <Style.Triggers>
                                <DataTrigger Binding="{Binding Path=Size2, Converter={StaticResource MySizeToErrorConverter}}" Value="True">
                                    <Setter Property="FontWeight" Value="Bold" />
                                    <Setter Property="Foreground" Value="Red" />
                                </DataTrigger>
                            </Style.Triggers>
                        </Style>
                    </telerik:GridViewDataColumn.CellStyle>
                </telerik:GridViewDataColumn>

Thanks,

Erez

answered on 04 Sep 2009, 06:59 AM

Hello Erez,

Thank you for your feedback. Indeed what you are sharing with us is a bug and it has been logged in our backlog. Q2 SP1 came with a completely new styling mechanism mainly due to Silverlight 3 and inevitably it affected some visuals. we are working diligently on resolving all issues we find as well as the ones reported by the community.

I apologize for the inconvenience and the time it took for this reply.

Sincerely yours,
Kalin Milanov
the Telerik team

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