binding to the text box

Hi, I am using OleDbConnection , OleDbAdapter, OledbCommand with parameter I am having problem with binding the textbox''s text property with the result. I am sending the code also: string strOleDb; strOleDb = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\kp\db1.mdb"; OleDbConnection cn = new OleDbConnection(); cn.ConnectionString = strOleDb; string searchText = "select programs_interest from follow_up_report where no_of_children = ?"; OleDbDataAdapter da = new OleDbDataAdapter(searchText, cn); OleDbCommand selectCommand = new OleDbCommand(searchText,cn); da.SelectCommand = selectCommand; selectCommand.Parameters.AddWithValue("no_of_children", no_of_childrenTextBox.Text); DataSet ds = new DataSet("follow_up_report"); da.Fill(ds, "follow_up_report"); programs_interestTextBox.DataBindings.Add("Text", ds.Tables["follow_up_report"], "programs_interest"); this is giving the following error : This causes two bindings in the collection to bind to the same property. Parameter name: binding Let me know. My email address: manuaz1@yahoo.com Thank you.