Change row style when field value is null

[Orit]

Hi

I want to change the style of a row when some fiekd is null
here is my code

<telerik:RadGridView.Resources>
<Style TargetType="{x:Type telerik:GridViewRow}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=ParentID}" Value="NULL">
<DataTrigger.Setters>
<Setter Property="FontSize" Value="14" />
<Setter Property="FontWeight" Value="Bold" />
</DataTrigger.Setters>
</DataTrigger>
</Style.Triggers>
</Style>
</telerik:RadGridView.Resources>

it doesnt work.

thanks.

[Rossen Hristov]

Hi Orit,

You will need to use the x:Null Markup Extension. "NULL" is simply the string "NULL" and has no special meaning to the compiler. Here is how to do this:

<Window x:Class="Ticket209422_RowStyleAccordingToDataItem.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
    Title="Window1" Height="300" Width="300">
    <Grid>
        <telerik:RadGridView Name="RadGridView1" ColumnsWidthMode="Auto">
            <telerik:RadGridView.Resources>
                <Style TargetType="{x:Type telerik:GridViewRow}">
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding Path=DigitalSignature}" Value="{x:Null}">
                            <DataTrigger.Setters>
                                <Setter Property="Background" Value="Red" />
                                <Setter Property="FontSize" Value="14" />
                            </DataTrigger.Setters>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </telerik:RadGridView.Resources>
        </telerik:RadGridView>
    </Grid>
</Window>

I have prepared a small sample project that demonstrates this. Please, examine the sample and let me know if you have any other questions.

All the best,
Ross
the Telerik team

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