Migrating from Visual Studio .NET 2003 to Visual Studio 2005

Re: Calling a Public Function from the ASPX page

belcherman — Fri, 03 Apr 2009 22:57:33 GMT

Old post but I have the same situation. I am trying to call a function in my code behind form a aspx page. The thing is that this page is using inline coding module as opposed to code behind. I have a header.ascx file that has the function: void SiteName(Object sender, EventArgs e) { if (string.Compare(G_site.name, string.Empty) != 0) { LiteralWelcome.Text = ""; LiteralWelcome.Text += "\n"; LiteralWelcome.Text += "Welcome!\n"; LiteralWelcome.Text += "\n"; LiteralWelcome.Text += "\n"; LiteralWelcome.Text += "" + G_site.name + "
\n"; Response.Write("" + G_site.name + "
\n"); if (string.Compare(G_site.site_id, string.Empty) != 0) { LiteralWelcome.Text += "(" + G_site.site_id + ")"; } else if (string.Compare(G_site.consortia_id, string.Empty) != 0) { LiteralWelcome.Text += "(" + G_site.consortia_id + ")"; } LiteralWelcome.Text += "

\n"; LiteralWelcome.Text += "\n"; } } And form admin.aspx I am trying to call this function. I am not sure how to do that or if you can. I know this SiteName(sender,e); will not work because the function is in the header.ascx code behind. Is it possible to do this. Call a function in a included user controls code behind? Header.ascx is a webusercontrol in admin.aspx

Re: Calling a Public Function from the ASPX page

sg.microsofttech — Tue, 08 Jul 2008 16:16:49 GMT

Make sure that you are calling Page.DataBind().

cheers

Re: Calling a Public Function from the ASPX page

rathergolf — Thu, 17 Apr 2008 18:48:04 GMT

I'm running into this same thing a LOT! I have a web site project that was created in VS05 and runs great. I've tried to move some of the pages to a VS08 project and I get the "Function Not Delcared" error. I also periodically get an error that a variable hasn't been declared in the code behind the page for a simple label that exists in the page. What is the deal with VS??? Has anyone discovered why this happens??

Re: Calling a Public Function from the ASPX page

quizwedge — Thu, 10 Apr 2008 22:21:49 GMT

okay, that's bizarre... now it's working fine. Oh, well, I guess I just shouldn't question it. :) At least I know that what I did is correct.

Thanks,

Dan

Re: Calling a Public Function from the ASPX page

Thomas Sun – MSFT — Thu, 10 Apr 2008 02:39:11 GMT

Hi,

Thanks for your response.

Does the codebehind class have a namespace? If yes, we need to add the namespace in the Inherits section of Page directive. In your case, I cannot see the namespace in the codebehind, but you use a namespace in the Inherits section of this Page directive. For more information about Page directive, see http://msdn2.microsoft.com/en-us/library/ydy4x04a(VS.80).aspx

I hope this helps.

Re: Calling a Public Function from the ASPX page

quizwedge — Wed, 09 Apr 2008 22:50:37 GMT

I tried switching from # to = and still got the Name 'f_MyFunction' is not declared.

Re: Calling a Public Function from the ASPX page

Thomas Sun – MSFT — Wed, 09 Apr 2008 10:05:05 GMT

quizwedge:

Weird... here's the entire code of a sample page that's erroring... just in case I missed something (I only changed the main project name to MyProject for security reasons). The solution has two projects, UserInterface and BusinessLogic. The BusinessLogic project is just a bunch of classes.

----ASPX page

<%@ Page Language="vb" AutoEventWireup="false" MasterPageFile="~/MyProject.Master" CodeBehind="zTestForForum.aspx.vb" Inherits="UserInterface.zTestForForum"
    title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <%#f_MyFunction(1)%>
</asp:Content>

----CodeBehind

Public Partial Class zTestForForum
    Inherits System.Web.UI.Page

    Public Function f_MyFunction(ByVal ID As Integer) As String
        Return ID.ToString
    End Function

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub

End Class

Thanks,

Dan

Hi,

The expression inside <%# %> will be executed only when DataBind method is called. The expression inside <%= %> will be executed when it appears in the page.

In your case, you can use the <%=f_MyFunction(1) %>.

I hope this helps.

Re: Calling a Public Function from the ASPX page

quizwedge — Wed, 09 Apr 2008 00:57:10 GMT

Weird... here's the entire code of a sample page that's erroring... just in case I missed something (I only changed the main project name to MyProject for security reasons). The solution has two projects, UserInterface and BusinessLogic. The BusinessLogic project is just a bunch of classes.

----ASPX page

<%@ Page Language="vb" AutoEventWireup="false" MasterPageFile="~/MyProject.Master" CodeBehind="zTestForForum.aspx.vb" Inherits="UserInterface.zTestForForum"
title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<%#f_MyFunction(1)%>
</asp:Content>

----CodeBehind

Public Partial Class zTestForForum
    Inherits System.Web.UI.Page

    Public Function f_MyFunction(ByVal ID As Integer) As String
        Return ID.ToString
    End Function

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub

End Class

Thanks,

Dan

Re: Calling a Public Function from the ASPX page

RJA — Wed, 09 Apr 2008 00:43:17 GMT

The code you've shown should work - it looks good. I've created a Master Page w/a content page and a myFunction as you've described to test it out and it works great. Is the ID parameter set somewhere else or used in a data binding expression? Perhaps if you can post the rest of the functions code if possible that might point toward what the problem is.

Re: Calling a Public Function from the ASPX page

quizwedge — Wed, 09 Apr 2008 00:10:04 GMT

Just to clarify, the function is in the content page codebehind. The function is called from the content page as well. Thanks.

Re: Calling a Public Function from the ASPX page

quizwedge — Tue, 08 Apr 2008 07:45:12 GMT

It's in the content page as part of the page's class.

Re: Calling a Public Function from the ASPX page

RJA — Tue, 08 Apr 2008 01:59:43 GMT

Check to see where you are calling myFunction from - the content page or master page and where's it defined, in the content page or master page? If myFunction is defined in the master page you may need to use the Me.Master property to access it and call it.

Calling a Public Function from the ASPX page

quizwedge — Tue, 08 Apr 2008 00:46:29 GMT

I know I did this in Visual Studio 2003 (ASP.NET 1.1), but can't seem to do it in Visual Studio 2005 (ASP.NET 3.5?). I've got a page that's part of a master page. The project is an AJAX project. From the aspx page, I'm trying to call myFunction(ID) with the following: <%# myFunction(ID) %>. On the codebehind page, I have the following as part of the partial public class:

    Public Function myFunction(ByVal ID As Integer) As String
        Return ID.ToString
    End Function

My function actually does more, but I figured I'd keep things simplified. Visual Studio 2005 says "Name 'myFunction' is not declared". What am I doing wrong? This worked great in Visual Studio 2003.

Thanks,

Dan