c# - Count the number of TextBoxes and CheckBoxes in a form -

my requirement count total number of textbox , checkbox present directly inside form id="form1", when user clicks on button 'btngetcount'. here code have tried doesn't count , counter remains @ zero, though have 3 textboxes , 2 checkboxes in form. however, if remove foreach loop , pass textbox control = new textbox(); instead of present code counts first textbox , counttb returns value one.

protected void btngetcount_click(object sender, eventargs e)     {         control control = new control();          int countcb = 0;         int counttb = 0;         foreach (control c in this.controls)         {             if (control.gettype() == typeof(checkbox))             {                 countcb++;             }             else if (control textbox)             {                 counttb++;             }         }          response.write("no of textboxes: " + counttb);         response.write("<br>");         response.write("no of checkboxes: " + countcb);     } 

you must recursively loop through other controls.

    <form id="form1" runat="server">     <div>     <asp:textbox id="txt" runat="server"></asp:textbox>     <asp:checkbox id="cb" runat="server"></asp:checkbox>     </div>     </form>  protected void page_load(object sender, eventargs e) {     var controls = form1.controls;     var tbcount = 0;     var cbcount = 0;     countcontrols(ref tbcount, controls, ref cbcount);      response.write(tbcount);     response.write(cbcount); }  private static void countcontrols(ref int tbcount, controlcollection controls, ref int cbcount) {     foreach (control wc in controls)     {         if (wc textbox)             tbcount++;         else if (wc checkbox)             cbcount++;         else if(wc.controls.count > 0)             countcontrols(ref tbcount, wc.controls, ref cbcount);     } }