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

Question

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

void datagrid_LoadingRow(object sender, DataGridRowEventArgs e) 
{ 
     e.Row.Heade         


        

Answer 1

I used Andys example, but I needed to use it from the code behind, so he is my code just in case anyone is looking to do the same as googling was a bit barren.

The C#

    DataGrid dataGrid = new DataGrid();

    DataGridTextColumn column0 = new DataGridTextColumn();
    column0.Header = "#";

    Binding bindingColumn0 = new Binding();
    bindingColumn0.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor, typeof(DataGridRow), 1);
    bindingColumn0.Converter = new RowToIndexConvertor();

    column0.Binding = bindingColumn0;

    dataGrid.Columns.Add(column0);

Andy's Converter, just added return row.GetIndex() - 1; to start the count at 1, rather than 0.

public class RowToIndexConvertor : MarkupExtension, IValueConverter
{
    static RowToIndexConvertor convertor;

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        DataGridRow row = value as DataGridRow;

        if (row != null)
        {
            return row.GetIndex() + 1;
        }
        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 (convertor == null)
        {
            convertor = new RowToIndexConvertor();
        }

        return convertor;
    }


    public RowToIndexConvertor()
    {

    }
}

Also don't forget the using's

using System;
using System.Windows.Data;
using System.Windows.Controls;
using System.Windows.Markup;