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Posez votre question// Creating connection and command sting string conStr = @"Provider=Microsoft.JET.OLEDB.4.0;data source=C:\northwind.mdb"; string sqlStr = "SELECT * FROM Employees"; // Create connection object OleDbConnection conn = new OleDbConnection(conStr); // Create data adapter object OleDbDataAdapter da = new OleDbDataAdapter(sqlStr,conn); // Create a dataset object and fill with data using data adapter's Fill method DataSet ds = new DataSet(); da.Fill(ds, "Employees"); // Hide the column and attach dataset's DefaultView to the datagrid control ds.Tables["Employees"].Columns["LastName"].ColumnMapping = MappingType.Hidden; dataGrid1.DataSource = ds.Tables["Employees"];