سلام می خوام اطلاعات یکی از فیلدهای دیتابیس رو انتقال بدم داخل تکست باکس (یا داخل یه متغیر رشته ای)

کد

                                                                                    ;()SqlConnection con = new SqlConnection
                                                                                     ;()SqlCommand cmd = new SqlCommand
                                                                               ;()SqlDataAdapter dap = new SqlDataAdapter
                                                                                                  ;()DataTable dt = new DataTable
   con.ConnectionString = @"Data Source=.\SQLEXPRESS;AttachDbFilename=|datadirectory|self.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True";
                                                                                                                                 ;()con.Open
                                                                                                                ;cmd.Connection = con
                                                                                 ;"cmd.CommandText = "select * from Table1
                                                                                                        ;dap.SelectCommand = cmd
                                                                                                                                 ;dap.Fill(dt)
                                                                                                              ;()cmd.ExecuteNonQuery
                                                                                                                                 ;()con.Close

حالا می خوام مقدار یکی از فیلدهی dt رو به داخل تکست باکس قرار بدم

                                                                                                                     جواب= textbox1.text

فکر می کنم خوب شرح داده باشم.

ممنون