Issues With asp Validation Controls

3 posts, 0 answers
  1. Abdallah
    Abdallah avatar
    7 posts
    Member since:
    Jan 2011

    Posted 05 Feb 2011 Link to this post

    Dear all,

    1-Please i used a asp required validation controls with radcombo box and the InitialValue property of required validation not working .
    2-other controls is working only in the first view of the page if the page is posted back the validation not working ..
    Please help me in this .
    Best Regards 
  2. Cori
    Cori avatar
    562 posts
    Member since:
    Jul 2010

    Posted 07 Feb 2011 Link to this post

    Hello Abdallah,

    I would suggest using a CustomValidator and writing the javascript to validate the control. Like so:

    <asp:CustomValidator ID="CustomValidator1" runat="server" Display="Dynamic" ValidationGroup="Save"

    function ValidateRadComboBox(source, args){
        var combo = $find("RadComboBox1.ClientID");
        args.IsValid = combo.get_selectedIndex() > 0;

    That's pretty much it. You'll need to handle the server-side check for the CustomValidator by handling the OnServerValidate event.

    I hope that helps.
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  4. Thad
    Thad avatar
    106 posts
    Member since:
    Sep 2010

    Posted 08 Feb 2011 Link to this post

    Hey Abdallah,

    One thing that got me for a bit was that the RequiredFieldValidator works on the TEXT property of a RadComboBox, not on the Value property like a normal DropDownList.

    It might be that you just need to change the InitialValue to something that represents the textual value of the default item.

    Hope that helps,
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