Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.0k views
in Technique[技术] by (71.8m points)

wpf controls - How to show row-number in first column of WPF Datagrid

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(); 
} 

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

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

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

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.

enter image description here

the 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>

and the converter.

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()
    {
    }
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...