从VB 2003（ASP.Net）迁移到C＃2008 ASP.Net

Question

I am converting an existing vb2003 asp.net 1.1 application to C#2008 asp.net 3.5. I have copied the HTML onto my C# markup window (consisting of Labels, text fields & buttons)

However, when I attepmt to "View in browser", I get the error below:

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

Source Error:

Line 320:<tr>
Line 321:    <td><input type="reset" value="Reset" class="formbutton">
Line 322:    <asp:button cssclass="formbutton" text="Next" id="btnSubmit" runat="server" onclick="btnSubmit_Click"/></td>
Line 323:</tr>

My code behind contains the following code:

    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        if (ValidateHeader() && ValidateFooter())
            LoadDatabase();

    }

Any ideas?

Answer 1

I had some compatibility issues as well when I copied and pasted code from one version to another. Your best bet would be to re-type the complete code from scratch.

HTH.

Answer 2

After thinking about this for a few minutes, my first thought is this:

Something in the aspx file's @Page directive is wrong. A Typical ASP.NET Page header for C# in VS2008 looks like this:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

(That's from a new /Default.aspx file, your files may have additional attributes such as MasterPageFile)

Note that the Inherits line is case-sensitive in C#, so it should match the CodeFile's class name exactly.