Array & Control Problem

• • Reply

  13 years ago

  by royal ludhiana

  Royal Ludhiana

  Toronto, Canada

  Joined 14 years ago

  hi all,

  I am working on a form with 10 controls(textbox, dropdownlist, button) on it. What I am trying to do is:

  - I want to count no. of controls on my web form(ignoring controls like Button, Div, Panel).

  - After counting the same I want to generate a loop which will fill an Array/ ArrayList with the values from various controls(mainly textbox and dropdownlist).

  - and in a class I want to extract the values of the same.

  Regards,

  Royal

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• • Reply

  13 years ago

  by joe90

  J Alan

  , United Kingdom

  Joined 15 years ago

  Royal,

  Enabling the search of controls ain't too bad:

  main page:
              if (!IsPostBack)
              {
  
                  DoControls(this);
  

  
  sub-routine:
          // recursive routine for finding all controls underneath a parent (page)
          private void DoControls(Control c)
          {
              if (c.HasControls())
              {
                  foreach (Control o in c.Controls)
                  {
                      DoControls(o);
                  }
              }
              else
                  System.Diagnostics.Debug.WriteLine(c.GetType().ToString());
          }
  
  

  
  output:
  System.Web.UI.LiteralControl
  System.Web.UI.HtmlControls.HtmlTitle
  System.Web.UI.LiteralControl
  System.Web.UI.LiteralControl
  System.Web.UI.WebControls.GridView
  System.Web.UI.LiteralControl
  System.Web.UI.LiteralControl

   

  However, in order to gain the values etc from the controls, you'll have to "assess" their type (typeof), and unless you absolutely know that the control you want the values from has the same attribute that is accessible (ie ".Text" for  instance) - you'll still have to do the appropriate cast I think.

  The class could contain a simple hashtable / dictionary - where you could store the control name against its value.

  Dunno if this is the kind of thing you're thinking of, but don't see why it shouldn't work.

  Joe 

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