'Declaration Public Property SortComparer As IComparer
'Usage Dim instance As DataGridItemPropertyBase Dim value As IComparer instance.SortComparer = value value = instance.SortComparer
public IComparer SortComparer {get; set;}
'Declaration Public Property SortComparer As IComparer
'Usage Dim instance As DataGridItemPropertyBase Dim value As IComparer instance.SortComparer = value value = instance.SortComparer
public IComparer SortComparer {get; set;}
If a null reference (Nothing in Visual Basic), the default comparer will be used.
Custom sort comparers are not supported by the virtualizing collection views (e.g., DataGridVirtualizingCollectionViewSource).
<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid" xmlns:local="clr-namespace:Xceed.Wpf.Documentation"> <Grid.Resources> <local:AddressComparer x:Key="addressComparer"/> <xcdg:DataGridCollectionViewSource x:Key="cvs_orders" Source="{Binding Source={x:Static Application.Current}, Path=Orders}" AutoCreateItemProperties="False"> <xcdg:DataGridCollectionViewSource.ItemProperties> <xcdg:DataGridItemProperty Name="ShipCountry" /> <xcdg:DataGridItemProperty Name="ShipCity" /> <xcdg:DataGridItemProperty Name="ShipAddress" SortComparer="{StaticResource addressComparer}"/> <xcdg:DataGridItemProperty Name="ShipVia" /> </xcdg:DataGridCollectionViewSource.ItemProperties> </xcdg:DataGridCollectionViewSource> </Grid.Resources> <xcdg:DataGridControl x:Name="OrdersGrid" ItemsSource="{Binding Source={StaticResource cvs_orders}}"> <xcdg:DataGridControl.View> <xcdg:TableView ColumnStretchMode="StretchAll"/> </xcdg:DataGridControl.View> </xcdg:DataGridControl> </Grid>
Imports System Imports System.Collections Imports System.Data Namespace Xceed.Wpf.Documentation Public Class AddressComparer Implements IComparer Public Sub New() End Sub Public Function Compare( x As Object, y As Object ) As Integer Implements IComparer.Compare Dim stringX As String = CType( x, String ) Dim stringY As String = Ctyle( y, String ) Const digits As String = "0123456789" If( ( digits.IndexOf( stringX( 0 ) ) >= 0 ) And ( digits.IndexOf( stringY( 0 ) ) >= 0 ) ) Then Dim index As Integer = 0 Dim xNumber As System.Text.StringBuilder = New System.Text.StringBuilder() While( ( index < stringX.Length ) And ( digits.IndexOf( stringX( index ) ) >= 0 ) ) xNumber.Append( stringX( index ) ) index++ End While index = 0 Dim yNumber As System.Text.StringBuilder = New System.Text.StringBuilder() While( ( index < stringY.Length ) And ( digits.IndexOf( stringY( index ) ) >= 0 ) ) yNumber.Append( stringY( index ) ) index++ End While Dim xValue = Long.Parse( xNumber.ToString() ) Dim yValue As Long = Long.Parse( yNumber.ToString() ) If( xValue > yValue ) Then Return 1 End If If( xValue < yValue ) Then Return -1 End If Return stringX.CompareTo( stringY ) Else Return stringX.CompareTo( stringY ) End If End Function End Class End Namespace
using System; using System.Collections; using System.Data; namespace Xceed.Wpf.Documentation { public class AddressComparer: IComparer { public AddressComparer() { } int IComparer.Compare( object x, object y ) { string stringX = ( string )x; string stringY = ( string )y; const string digits = "0123456789"; if( ( digits.IndexOf( stringX[ 0 ] ) >= 0 ) && ( digits.IndexOf( stringY[ 0 ] ) >= 0 ) ) { int index = 0; System.Text.StringBuilder xNumber = new System.Text.StringBuilder(); while( ( index < stringX.Length ) && ( digits.IndexOf( stringX[ index ] ) >= 0 ) ) { xNumber.Append( stringX[ index ] ); index++; } index = 0; System.Text.StringBuilder yNumber = new System.Text.StringBuilder(); while( ( index < stringY.Length ) && ( digits.IndexOf( stringY[ index ] ) >= 0 ) ) { yNumber.Append( stringY[ index ] ); index++; } long xValue = long.Parse( xNumber.ToString() ); long yValue = long.Parse( yNumber.ToString() ); if( xValue > yValue ) return 1; if( xValue < yValue ) return -1; return stringX.CompareTo( stringY ); } else { return stringX.CompareTo( stringY ); } } } }
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