Hi Abdul,
To access a column value based on its fieldname or column name, make use of the NameToColIndex property of the grid.
Inserting the following code in the CellDoubleClick Event of the grid achieves the same.
int colInd = this.gridDataBoundGrid1.Binder.NameToColIndex("Col1"); // specify the column name here
MessageBox.Show(this.gridDataBoundGrid1.Model[e.RowIndex,colInd].CellValue.ToString());
On double clicking any row you can view that particular column value.
Please refer the sample attached for demonstration of these functionalities.
Thanks,
Rajagopal
ColAccessSample.zip