Dynamic Creation of Controls in a questionnaire RSS

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  amosCabanban...

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  Dynamic Creation of Controls in a questionnaire

  May 05, 2012 08:57 PM|LINK

  I am creating a questionnaire that has its controls dynamically created within a user control. I am hooking the creation of this controls on the usercontrol page_init event.

  My question is how can I parse through all the controls on the form and get the user's selected answers?   Note also that the questionnaire will have textboxes, radiobuttonlists, dropdowns and other controls. Should I create the controls with their ID as the Question's primary key?

   public void CreateInstanceOf(string controlType, IEnumerable<ANSWER> answers, UserControl userControl)
          {
              var getTypeByStringName = TypeMapper(controlType);
              if (getTypeByStringName != null)
              {
                  var newControl = Activator.CreateInstance(TypeMapper(controlType));
                  var castedControl = newControl as Control;
                  if (castedControl != null)
                  {
                      if (castedControl is DropDownList)
                      {
                          var dropDown = castedControl as DropDownList;
                          foreach (var answer in answers)
                          {
                              dropDown.Items.Add(new ListItem {Text = answer.ANSWER1, Value = answer.VALUE});
                              dropDown.ID = answer.Q_ID.ToString(); //Since all Question IDS are the same, this should work just fine
                          }
                          dropDown.ClientIDMode = ClientIDMode.Static;
                          dropDown.Items.Insert(0, new ListItem { Text = "Select", Value = "" });
                          dropDown.Items.FindByText("Select").Selected = true;
                          
                          userControl.Controls.Add((Control) newControl);
                      }
                      else if (castedControl is RadioButtonList)
                      {
                          var radioButtonList = castedControl as RadioButtonList;
                          foreach (var answer in answers)
                          {
                              radioButtonList.Items.Add(new ListItem { Text = answer.ANSWER1, Value = answer.VALUE });
                              radioButtonList.ID = answer.Q_ID.ToString(); //Since all Question IDS are the same, this should work just fine
                          }
                          radioButtonList.ClientIDMode = ClientIDMode.Static;
                          userControl.Controls.Add((Control)newControl);
                      }
                  }
              }
          }

  • Edited by amosCabanban86 on May 05, 2012 08:58 PM
  • Edited by amosCabanban86 on May 06, 2012 02:34 PM