Conditional styles and templates with RadGridView for Silverlight and WPF

I’m happy to announce that with our upcoming Q1 2010 Service Pack 1 (middle of April) you will be able to apply conditionally styles and templates for RadGridView easily using DataTemplateSelectors and StyleSelectors for both Silverlight and WPF:

You can test the new functionally with our upcoming latest internal build this Friday and in the meantime here is an example:

XAML

<Grid x:Name="LayoutRoot">
   <Grid.Resources>
        <local:MyStyleSelector x:Key="styleSelector" />
        <local:MyDataTemplateSelector x:Key="templateSelector" />
    </Grid.Resources>
    <telerik:RadGridView AutoGenerateColumns="False" ItemsSource="{Binding}" RowStyleSelector="{StaticResource styleSelector}">
        <telerik:RadGridView.Columns>
            <telerik:GridViewDataColumn DataMemberBinding="{Binding ID}" CellTemplateSelector="{StaticResource templateSelector}" />
        </telerik:RadGridView.Columns>
    </telerik:RadGridView>
</Grid>

C#

public class MyStyleSelector : StyleSelector
{
 public override Style SelectStyle(object item, DependencyObject container)
    {
 var style = style = new Style(typeof(GridViewRow));

 var row = (GridViewRow)container;
 var obj = (MyObject)item;

 if (obj.ID > 50)
        {
            style.Setters.Add(new Setter(GridViewRow.BackgroundProperty, new SolidColorBrush(Colors.Red)));
        }
 else
 {
            style.Setters.Add(new Setter(GridViewRow.BackgroundProperty, new SolidColorBrush(Colors.Blue)));

        }

 return style;
    }
}

public class MyDataTemplateSelector : DataTemplateSelector
{
 public override DataTemplate SelectTemplate(object item, DependencyObject container)
    {
 var template = base.SelectTemplate(item, container);

 var cell = (GridViewCell)container;
 var obj = (MyObject)item;

 if (obj.ID > 50)
        {
            template = (DataTemplate)XamlReader.Load(
 @"<DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"">
                                        <TextBlock Text=""{Binding ID}"" />
                                    </DataTemplate>");
        }
 else
 {
            template = (DataTemplate)XamlReader.Load(
 @"<DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"">
                                        <TextBox Text=""{Binding ID}"" />
                                    </DataTemplate>");
        }

 return template;
    }
}

GridViewColumn
- CellTemplateSelector
- CellEditTemplateSelector
- ToolTipTemplateSelector
- GroupHeaderTemplateSelector
- GroupFooterTemplateSelector
- CellStyleSelector
- GroupFooterCellStyleSelector

GridViewDataControl
- RowDetailsTemplateSelector
- HierachyChildTemplateSelector
- RowStyleSelector
- AlternateRowStyleSelector
- GroupRowStyleSelector
- GroupFooterRowStyleSelector
- RowDetailsStyleSelector

Important: If you set respective Style or DataTemplate property (for example CellStyle/CellStyleSelector) the Style/DataTemplate selector will not be applied!

Enjoy!