WPF:DataGrid 自动生成行号

　　下面给大家分享一种通过 DataGridRowHeader 自动生成 DataGrid 数据行行号的方式。只需一个 ValueConverter 就能搞定。

值转换器

 1     class AutoNumberValueConverter : IMultiValueConverter
 2     {
 3         #region IMultiValueConverter 成员
 4 
 5         public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
 6         {
 7             var item = values[0];
 8             var items = values[1] as ItemCollection;
 9 
10             var index = items.IndexOf(item);
11             return (index + 1).ToString();
12         }
13 
14         public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
15         {
16             return null;
17         }
18 
19         #endregion
20     }

前台代码

 1 <Window x:Class="DataGridAutoRowNumberDemo.MainWindow"
 2         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4         xmlns:demo="clr-namespace:DataGridAutoRowNumberDemo"
 5         Title="MainWindow"
 6         Width="525"
 7         Height="350">
 8     <Window.Resources>
 9         <demo:AutoNumberValueConverter x:Key="autoNumberValueConverter" />
10     </Window.Resources>
11     <DataGrid x:Name="dataGrid">
12         <DataGrid.RowHeaderStyle>
13             <Style TargetType="{x:Type DataGridRowHeader}">
14                 <Setter Property="Content">
15                     <Setter.Value>
16                         <MultiBinding Converter="{StaticResource autoNumberValueConverter}">
17                             <Binding />
18                             <Binding Path="Items" RelativeSource="{RelativeSource AncestorType={x:Type DataGrid}}" />
19                         </MultiBinding>
20                     </Setter.Value>
21                 </Setter>
22             </Style>
23         </DataGrid.RowHeaderStyle>
24     </DataGrid>
25 </Window>

就此搞定！
示例代码：下载