DataGrid.RowHeaderStyle Property

Definition

Namespace:

System.Windows.Controls

Assembly:

PresentationFramework.dll

Gets or sets the style applied to all row headers.

public:
 property System::Windows::Style ^ RowHeaderStyle { System::Windows::Style ^ get(); void set(System::Windows::Style ^ value); };

public System.Windows.Style RowHeaderStyle { get; set; }

member this.RowHeaderStyle : System.Windows.Style with get, set

Public Property RowHeaderStyle As Style

Property Value

Style

The style applied to all row headers in the DataGrid. The registered default is null. For more information about what can influence the value, see DependencyProperty.

Examples

The following example shows how to display numbered rows in the row header by applying a binding with a value converter to the Content property of the DataGridRowHeader. The converter is created as a resource by mapping the namespace and creating an instance of the class. For more information, see Data Binding Overview.

<Window.Resources>
    <local:ConvertItemToIndex x:Key="IndexConverter"/>     
</Window.Resources>
<Grid>
    <DataGrid Name="DG1" ItemsSource="{Binding}" CanUserAddRows="False" CanUserDeleteRows="False" >
        <!--Bind the Content property of the RowHeaderStyle to the Converter to create numbered rows-->
        <DataGrid.RowHeaderStyle>
            <Style TargetType="{x:Type DataGridRowHeader}">
                <Setter Property="Content" Value="{Binding Converter={StaticResource IndexConverter}}" />
            </Style>
        </DataGrid.RowHeaderStyle>
    </DataGrid>
</Grid>

public class ConvertItemToIndex : IValueConverter
{
    #region IValueConverter Members
    //Convert the Item to an Index
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        try
        {
            //Get the CollectionView from the DataGrid that is using the converter
            DataGrid dg = (DataGrid)Application.Current.MainWindow.FindName("DG1");
            CollectionView cv = (CollectionView)dg.Items;
            //Get the index of the item from the CollectionView
            int rowindex = cv.IndexOf(value)+1;

            return rowindex.ToString();
        }
        catch (Exception e)
        {
            throw new NotImplementedException(e.Message);
        }
    }
     //One way binding, so ConvertBack is not implemented
    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }

    #endregion
}

Public Class ConvertItemToIndex
    Implements IValueConverter

    Public Function Convert(value As Object, targetType As System.Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.Convert
        Try
            'Get the CollectionView from the DataGrid that is using the converter 
            Dim dg As DataGrid = DirectCast(Application.Current.MainWindow.FindName("DG1"), DataGrid)
            Dim cv As CollectionView = DirectCast(dg.Items, CollectionView)
            'Get the index of the item from the CollectionView 
            Dim rowindex As Integer = cv.IndexOf(value) + 1

            Return rowindex.ToString()

        Catch e As Exception
            Throw New NotImplementedException(e.Message)
        End Try
    End Function

    Public Function ConvertBack(value As Object, targetType As System.Type, parameter As Object, culture As System.Globalization.CultureInfo) As Object Implements System.Windows.Data.IValueConverter.ConvertBack
        Throw New NotImplementedException()
    End Function
End Class

Remarks

Apply a Style to update the visual appearance of all the row headers in the DataGrid. To define a Style for a row header, specify a TargetType of DataGridRowHeader.

You can also use the RowHeaderStyle property to update any property of DataGridRowHeader.

A Style can be applied to all row headers, or to an individual row header. To apply a Style to an individual header, set the DataGridRow.HeaderStyle property, which takes precedence over the DataGrid.RowHeaderStyle property.

See also

• HeadersVisibility