thanks you sir For the Guide to me but one more Question
How Can I add Another Field Which is already in datatable but not show in gridview
Check the code please.................
radGridView1.TableElement.RowHeight = 100;
radGridView1.AllowAddNewRow = false;
var col = new GaugeColumn();
col.Width = 100;
col.FieldName = "GaugeData";
col.DataType = typeof(int);
radGridView1.Columns.Add(col);
dataTable.Columns.Add("GaugeData", typeof(int));
dataTable.Columns.Add("name");
dataTable.Columns.Add("class");
while (sqlDataReader.Read())
{
DataRow row = dataTable.NewRow();
row["GaugeData"] = sqlDataReader["GaugeData"];
row["name"] = sqlDataReader["name"];
row["class"] = sqlDataReader["class"];
dataTable.Rows.Add(row);
}