troubleshooting Question

Why can't I get ASP.NET validation controls to work?

Avatar of RoboRubik
RoboRubik asked on
ASP
6 Comments1 Solution325 ViewsLast Modified:
I am trying to use ASP.NET wit C# for form validation.  The problem is that I cannot seem to get any validation controls to prevent anything.  I can get them to show the validation text, but it does not seem to prevent the form from "submitting".  I have seen exmples in books and online showing how the validation controls should prevent something from happening... usually an OnClick event associated with the button.  But, when I try them the event always happens, even if though the validation error may show up.  I have never got an example to work right, even when I copy and paste the code, could there be an IIS or web.config problem?  Maybe I am misunderstanding what these controls should do.  I have an example below of a test form... when I click either button, both feedback labels change.  How can I check for validation?

<%@ Page Language="C#" Debug="true" ContentType="text/html" ResponseEncoding="iso-8859-1" %>
<script runat="server">
protected void Page_Load(Object Src, EventArgs E)
{
  if (IsPostBack && SomeMoreFeedback.Text=="one") {
            SomeMoreFeedback.Text="the other";      
      } else{
            SomeMoreFeedback.Text="one";      
      }
}
</script>
<script runat="server">
void btnSubmit_OnClick(Object Src, EventArgs E)
{
      SomeFeedback.Text="Button 1 Clicked";
}
void btnSubmit2_OnClick(Object Src, EventArgs E)
{
      SomeFeedback.Text="Button 2 Clicked";
}
</script>
<head>
<title>Validation Test</title>
</head>
<body>
<form name="testform" id="testform" runat="server">
<asp:textbox ID="TestBox" runat="server" TextMode="SingleLine"/>
<asp:requiredfieldvalidator ControlToValidate="TestBox" ErrorMessage="Required!!!" ID="valName" runat="server" />
<asp:button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_OnClick"/>
<asp:button ID="btnSubmit2" runat="server" Text="Submit" OnClick="btnSubmit2_OnClick"/>
</form>
<asp:label ID="SomeFeedback" runat="server" Text="" Visible="true"></asp:label><br />
<asp:label ID="SomeMoreFeedback" runat="server" Text="Form Not Submitted" Visible="true"></asp:label>
</body>
</html>
Join the community to see this answer!
Join our exclusive community to see this answer & millions of others.
Unlock 1 Answer and 6 Comments.
Join the Community
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 6 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros