Gets or sets the binding information between a column and its corresponding field in the underlying data source.
Syntax
Property Value
A reference to
DataGridBindingInfo that provides information about a column's binding to its corresponding field in the underlying data source.
Example
All examples in this topic assume that the grid is bound to a list of
Composer objects, unless stated otherwise.
The following example demonstrates how to create a custom ValidationRule and apply it to a column's binding to provide binding-level validation.Implementation of the YearValidationRule validation rule.Implementation of the YearValidationRule validation rule.
<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid"
xmlns:local="clr-namespace:Xceed.Wpf.Documentation">
<Grid.Resources>
<xcdg:DataGridCollectionViewSource x:Key="cvs_composers"
Source="{Binding Source={x:Static Application.Current},
Path=Composers}"/>
</Grid.Resources>
<xcdg:DataGridControl ItemsSource="{Binding Source={StaticResource cvs_composers}}"
UpdateSourceTrigger="RowEndingEdit">
<xcdg:DataGridControl.Columns>
<xcdg:Column FieldName="BirthYear">
<xcdg:Column.DisplayMemberBindingInfo>
<xcdg:DataGridBindingInfo Path="BirthYear">
<xcdg:DataGridBindingInfo.ValidationRules>
<local:YearValidationRule />
</xcdg:DataGridBindingInfo.ValidationRules>
</xcdg:DataGridBindingInfo>
</xcdg:Column.DisplayMemberBindingInfo>
</xcdg:Column>
<xcdg:Column FieldName="DeathYear">
<xcdg:Column.DisplayMemberBindingInfo>
<xcdg:DataGridBindingInfo Path="DeathYear">
<xcdg:DataGridBindingInfo.ValidationRules>
<local:YearValidationRule />
</xcdg:DataGridBindingInfo.ValidationRules>
</xcdg:DataGridBindingInfo>
</xcdg:Column.DisplayMemberBindingInfo>
</xcdg:Column>
</xcdg:DataGridControl.Columns>
</xcdg:DataGridControl>
</Grid>
Imports System
Imports System.Windows.Controls
Imports System.Globalization
Namespace Xceed.Wpf.Documentation
Public Class YearValidationRule
Inherits ValidationRule
Public Overrides Function Validate( ByVal value As Object, _
ByVal cultureInfo As CultureInfo ) As ValidationResult
Dim year As Integer = CInt( value )
If year > DateTime.Now.Year Then
Return New ValidationResult( False, "Chosen year cannot be greater than this year." )
End If
Return ValidationResult.ValidResult
End Function
End Class
End Namespace
using System;
using System.Windows.Controls;
using System.Globalization;
namespace Xceed.Wpf.Documentation
{
public class YearValidationRule : ValidationRule
{
public override ValidationResult Validate( object value, CultureInfo cultureInfo )
{
int year = ( int )value;
if( year > DateTime.Now.Year )
return new ValidationResult( false, "Chosen year cannot be greater than this year." );
return ValidationResult.ValidResult;
}
}
}
Requirements
Target Platforms: Windows 11, Windows, 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
See Also