C#

using System;
using System.Linq;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
 
namespace ModeDifféré
{
    public partial class DataGridT : Form
    {
        public DataGridT()
        {
            InitializeComponent();
        }
 
        private void DataGridT_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'baseGmaoLocaleDataSet2.Travaux' table. You can move, or remove it, as needed.
            this.travauxTableAdapter.Fill(this.baseGmaoLocaleDataSet2.Travaux);
 
        }
 
        private void dataGrid1_CurrentCellChanged(object sender, EventArgs e)
        {
 
        }
    }
}
But the problem is when running,an error occurs :
<pre>The column name is not valid. [ Node name (if any) = ,Column name = Effectué/Non ]