Build your own ASP.NET - Take a survey

**vpa** · Dec 25, 2011 10:02

Hello all,

I've been going through the Build your own ASP.NET 4, and I have to say so far I am learning a good deal.
However I have got stuck on chapter 4 when you have to make a survey. I followed the code exactly as it shows in the book but when ever I run it I get the following error:

Code:

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

Compiler Error Message: CS1061: 'ASP.survey_aspx' does not contain a definition for 'click' and no extension method 'click' accepting a first argument of type 'ASP.survey_aspx' could be found (are you missing a using directive or an assembly reference?)

Source Error:

 

Line 62:     <!-- Display confirmation button -->
Line 63:     <p>
Line 64:       <button id="confirmButton" OnServerClick="click" runat="server">Confirm</button>
Line 65:     </p>
Line 66:     <!-- confirmation label -->

At first I thought I had done something silly so I downloaded the original code from the website and tried that but I still got the same error. I'm not sure what to do next so can anyone help me out?

Thank you

**imaginekitty** · Dec 25, 2011 12:19

Show your code. Survey.aspx and Survey.aspx.cs

Looks like you either misspelled protected void click(object sender, EventArgs e) or you forgot to put it in altogether. If you're using C# it is case-sensitive.

**vpa** · Dec 25, 2011 12:33

servey.aspx

PHP Code:


<%@ Page Language="C#" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 transitional //EN"

  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



  <script runat="server">

      void Click(Object s, EventArgs e)

      {

          feedbackLabel.Text = "Your name is: " + name.Value + "<br />";

          feedbackLabel.Text += "Your email is: " + email.Value +

              "<br />";

          feedbackLabel.Text += "You like to work with:<br />";

          for (int i = 0; i <= serverModel.Items.Count - 1; i++)

          {

              if (serverModel.Items[i].Selected)

              {

                  feedbackLabel.Text += " - " + serverModel.Items[i].Text +

                      "<br />";

              }

          }

          feedbackLabel.Text += "You like .NET: " + likeDotNet.Value;

      }

  </script>



  <html xmlns= "http://www.w3.org/1999/xhtml">

    <head runat="server">

      <title>Using ASP.NET HTML Server Controls</title>

    </head>

    <body>

      <form id="form1" runat="server">

  <div>

    <h1>Take the survey!</h1>

    <!-- Display username -->

    <p>

     Name:<br />

     <input type="text" id="name" runat="server" />

    </p>

    <!-- Display email -->

    <p>

     Email:<br />

     <input type="text" id="email" runat="server" />

    </p>

    <!-- Display technology options -->

    <p>

     Which server technologies do you use?<br />

     <select id="serverModel" runat="server" multiple="true">

     <option>ASP>NET</option>

     <option>PHP</option>

     <option>JSP</option>

     <option>CGI</option>

     <option>ColdFusion</option>

     </select>

    </p>

    <!-- Display .NET preferences options -->

    <p>

     Do you like .NET so far<br />

     <select id="likeDotNet" runat="server">

       <option>Yes</option>

       <option>No</option>

     </select>

    </p>

    <!-- Display confirmation button -->

    <p>

      <button id="confirmButton" OnServerClick="click" runat="server">Confirm</button>

    </p>

    <!-- confirmation label -->

    <p>

      <asp:Label ID="feedbackLabel" runat="server" />

    </p>

  </div>

  </form>

  </body>

  </html>

survey.aspx.cs

PHP Code:


using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;



public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }

}

**imaginekitty** · Dec 25, 2011 12:43

Hmm. So, where is the handler named "click" in survey.aspx.cs? It's not there, that's what the error is telling you, right?

There should be something like this in there:

PHP Code:


using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;



public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }

    protected void click(object sender, EventArgs e)

    {

        // handle click event here

    }

}

[/QUOTE]

**vpa** · Dec 25, 2011 13:00

the aspx.cs code is inside the .cs code, so the handler named click is inside the survey.cs file.
This:

Code:

<script runat="server"> 
      void Click(Object s, EventArgs e) 
      { 
          feedbackLabel.Text = "Your name is: " + name.Value + "<br />"; 
          feedbackLabel.Text += "Your email is: " + email.Value + 
              "<br />"; 
          feedbackLabel.Text += "You like to work with:<br />"; 
          for (int i = 0; i <= serverModel.Items.Count - 1; i++) 
          { 
              if (serverModel.Items[i].Selected) 
              { 
                  feedbackLabel.Text += " - " + serverModel.Items[i].Text + 
                      "<br />"; 
              } 
          } 
          feedbackLabel.Text += "You like .NET: " + likeDotNet.Value; 
      } 
  </script>

**imaginekitty** · Dec 25, 2011 13:19

Oh, I'm sorry. I didn't see that.

I knew you could do that but I've never actually seen it done in practice. I've always seen the code behind used.

OK, now that I see what I should have seen, it is a case issue.
Change this:

Code Csharp:

<button id="confirmButton" OnServerClick="click" runat="server">Confirm</button>

to this:

Code Csharp:

<button id="confirmButton" OnServerClick="Click" runat="server">Confirm</button>

**vpa** · Dec 25, 2011 14:01

HAHA Thanks so much, I went over that code so many times. I can't believe it was something so simple as that.

**imaginekitty** · Dec 25, 2011 17:35

Originally Posted by vpa

HAHA Thanks so much, I went over that code so many times. I can't believe it was something so simple as that.

Yeah, it happens. Sometimes an extra eye or two on the code can reveal the issue.

User Tag List

Thread: Build your own ASP.NET - Take a survey

Thread Tools

Display

Build your own ASP.NET - Take a survey

Bookmarks

Bookmarks

Posting Permissions