Using C # and so on; Mysql I have combobox & amp; The button in my webpage, if I select a value from combobox, then I will click the refresh button on the page, the combobox value is changing. For example Cabbox value: 1, 2, 3, 4 ..... If I select 2, then I will press the button, the webpage is refreshed , Combobox value: 1, 2, 3, 4 is displayed .... Cambodia should display 2 combo box while displaying a selected value when I press the button Table name: User Username 1 Ravi 2 Ram 3 Kumar 4 ..., Click on the button Event Code cmd1 = New ODBC Commands ("Choose username where username = '" + combobox 1. item [combobox 1. selected index]. Text + "'", DBCN); Dr1 = cmd1.ExecuteReader (); While (dr1. Read ()) {textbox1.Text = dr1.GetString (0); } Dr1.Close (); Code above is working, but if I select value 2 from the combobox, then I would like to display Ravi by pressing the press button, but the text box is displaying the King. , And Cam...