如何在WPF Datagrid的第一列中显示行号 [英] How to show row-number in first column of WPF Datagrid

问题描述

在搜索时发现，行号可以轻松设置为RowHeader：

While searching I found that, row number can be set to RowHeader easily:

void datagrid_LoadingRow(object sender, DataGridRowEventArgs e) 
{ 
     e.Row.Header = e.Row.GetIndex(); 
} 

它在RowHeader中设置行号。但是我想在第一列显示行号

It sets row number in RowHeader. But I want to show Row number to first column

有人可以帮助我如何实现这一目标吗？谢谢

Can any one help me how can I achieve this? Thanks

推荐答案

可能有更简单的方法，但是我可以通过使用GetIndex（）方法来使它工作DataGridRow类。这样会将索引返回到数据源中，因此可能与您要查找的不完全相同。

There might be an easier way to do this but I got it to work by using the GetIndex() method on the DataGridRow class. This returns the index in to the data source so might not be exactly what you're after.

xaml

  <Window x:Class="WpfApplication1.MainWindow"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            xmlns:sys="clr-namespace:System;assembly=mscorlib"
            xmlns:local="clr-namespace:WpfApplication1"
            Title="MainWindow" Height="350" Width="525">
        <DataGrid>
            <DataGrid.Columns>
                <DataGridTextColumn Binding="{Binding RelativeSource={RelativeSource AncestorType=DataGridRow}, Converter={local:RowToIndexConverter}}" />
            </DataGrid.Columns>
            <DataGrid.Items>
                <sys:String>a</sys:String>
                <sys:String>b</sys:String>
                <sys:String>c</sys:String>
                <sys:String>d</sys:String>
                <sys:String>e</sys:String>
            </DataGrid.Items>
        </DataGrid>
    </Window>

和转换器。

public class RowToIndexConverter : MarkupExtension, IValueConverter
{
    static RowToIndexConverter converter;

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        DataGridRow row = value as DataGridRow;
        if (row != null)
            return row.GetIndex();
        else
            return -1;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }

    public override object ProvideValue(IServiceProvider serviceProvider)
    {
        if (converter == null) converter = new RowToIndexConverter();
        return converter;
    }

    public RowToIndexConverter()
    {
    }
}

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