Question

How add a vb.net web form and run it from an existing web form

Asked by: EYoung

I am new to ASP.net and I am using ASP.net 3.5 in VB 2008.  Although I have been coding in VB.net for Windows for years, I do not know how to compile and call a small web form from an existing company web form.

The form I am working with just has one text box and one button for now for testing.  I have clicked the Build option on the VS IDE and now see the .dll in the Bin directory.  What do I do now?

In vb.net for windows, when I click the Build, an .exe is created and I can just click on it and it will run.  But the same is, aparently not true with Web forms.  So how do I create what I need and how do I call/run it from within the company's existing web form?

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Asked On
2009-09-29 at 08:54:59ID24770543
Tags

asp.net vb.net web form html

Topics

Programming for ASP.NET

,

Hypertext Markup Language (HTML)

,

WebApplications

Participating Experts
1
Points
200
Comments
21

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Answers

 

by: locke_aPosted on 2009-09-29 at 09:07:40ID: 25450524

When you build the project, the dll is created in the bin folder.  In addition there will be aspx files in the parent folder.  These aspx files and the dll will need to be deployed to the web server where the company's site is hosted.

You can then point a browser at the aspx file and it should render.

 

by: EYoungPosted on 2009-09-29 at 09:54:57ID: 25450992

OK, I have copied the following four files to the wwwRoot directory.  When I run the .aspx, nothing happens:

TTA_Plan_Versioning_Web.dll
TTA_Plan_Versioning_Web.aspx
TTA_Plan_Versioning_Web.aspx.vb
TTA_Plan_Versioning_Web.aspx.designer.vb

I have looked at the error and it appears that there is an error with the .Default name I have used.  Here is the error message:

Server Error in '/wwwroot' Application.
--------------------------------------------------------------------------------

Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Could not load type 'TTA_Plan_Versioning_Web._Default'.

Source Error:

Line 1:  <%@ Page Language="vb" AutoEventWireup="false" CodeBehind="TTA_Plan_Versioning_Web.aspx.vb" Inherits="TTA_Plan_Versioning_Web._Default" %>
Line 2:  
Line 3:  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
Source File: /wwwroot/TTA_Plan_Versioning_Web.aspx    Line: 1
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053


I think I caused this error by renaming the "Default.aspx" form to "TTA_Plan_Versioning_Web.aspx".  I did that because the wwwRoot directory already has a Default.asp form that the company uses.  This is probable a simple fix but I don't know how to proceed.  Thanks for the help.

 

by: locke_aPosted on 2009-09-29 at 09:59:19ID: 25451037

Your dll should be in a bin folder on the server

 

by: locke_aPosted on 2009-09-29 at 10:00:05ID: 25451044

Also, the aspx.vb and aspx.designer.vb do not need to be deployed.  These are the code files that are compiled to make the dll.

 

by: EYoungPosted on 2009-09-29 at 10:20:19ID: 25451209

I removed the aspx.vb and the aspx.designer.vb files.

There does not appear to be a bin folder on the server.  

 

by: EYoungPosted on 2009-09-29 at 10:31:58ID: 25451298

The error may be due to a reference in the first line of my source code:

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="Plan_Versioning._Default" %>

It keeps referring to a file called Plan_Versioning._Default which does not exist as far as I can see.  I think I may be mis-nameing something.

Thanks for the help.

 

by: EYoungPosted on 2009-09-29 at 10:52:46ID: 25451481

Here is the code for the Default.aspx form:

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

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

    End Sub

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
        TextBox1.Text = "OK3"
    End Sub
End Class


As you can see, the first line refers to the "_Default" class/file.

 

by: EYoungPosted on 2009-09-29 at 10:54:01ID: 25451489

Points increased as I really need to get this resolved.

 

by: locke_aPosted on 2009-09-29 at 11:08:46ID: 25451648

Does the server currently host ASP.NET files?

The Plan_Versioning is the namespace and is probably above your class declaration in the code behind?

 

by: locke_aPosted on 2009-09-29 at 11:11:46ID: 25451683

You can add a bin folder for the dll.

 

by: EYoungPosted on 2009-09-29 at 12:14:22ID: 25452306

It looks like the server does host asp.net files but upon checking further, the server is a Windows 2000 server running .Net Framework 2.0.  I think that VB.net 2008 requires the server to run .Net Framework 3.5.  If that is the case, then I will need to ask for a different server that is running a more current version as .Net Framework 3.5 can not be installed on Windows Server 2000.

This is all pretty frustrating because our current Intranet works just fine and my VB.net 2008 project works fine in the IDE and when shown in an IE browser, so it should run from the current company's default.asp form.  But it does not.

Here is the code in the Plan_Versioning default.aspx form:

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

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

    End Sub

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
        TextBox1.Text = "OK3"
    End Sub
End Class

Any ideas?  Thanks

 

by: locke_aPosted on 2009-09-29 at 12:32:55ID: 25452514

VS2008 will allow you to choose a target framework.  You should be able to build / compile for .NET 2.0.

Unfortunately, I don't have VS2008 at my disposal right now, so I can't walk you through that setting.  I think a quick google would have the results though.

 

by: locke_aPosted on 2009-09-29 at 12:33:49ID: 25452523

Also, the current site's default.asp is classic ASP not ASP.NET.  This is likely written in VBScript as opposed to a complied VB.NET.  Which is also probably why there was no bin folder.

 

by: EYoungPosted on 2009-09-29 at 13:07:29ID: 25452913

OK. I found the setting to let me build for .NET 2.0.  I recreated the simple Default.aspx application and when I copy it to the wwwRoot folder and try to run it, it gives me the same error and crashs the company's web site.  When I delete my Default.aspx from the wwwRoot folder, the web site runs fine.

Any ideas?  Thanks

 

by: EYoungPosted on 2009-09-29 at 13:17:49ID: 25453029

A couple more notes:

The company web site I am referring to is an Intranet.

There is already a Default.asp file in the wwwroot folder and no Bin folder.

I suspect when I copy in my Default.aspx file to the wwwroot folder, it damages the company's intranet.  My the intranet looks to my Default.aspx first instead of the company's Default.asp?

 

by: locke_aPosted on 2009-09-29 at 13:34:27ID: 25453197

IIS will let you specify the order to look for a default file.  These usually include things like default.asp, default.aspx, index.html, etc.  You can move the default.asp above the aspx in the precident if you want, or you should be able to rename your aspx file to something else.

The .NET file will only work if you deploy the dll into a bin folder in the wwwroot.  This doesn't exist because your current intranet is classic ASP not .net.  This is okay, they can coexist.

 

by: EYoungPosted on 2009-09-29 at 15:10:58ID: 25453922

1.  I renamed my .aspx from Default.aspx to Test.aspx.  Then I re-built the application and put the Test.aspx into the wwwroot folder and the Test.dll into the Bin folder under wwwroot which I created.

2.  Now when I run it, I get a security exception.

 

by: EYoungPosted on 2009-09-29 at 15:13:56ID: 25453949

Here is the security error:

Server Error in '/wwwroot' Application.
--------------------------------------------------------------------------------

Security Exception
Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace:


[SecurityException: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
   System.Reflection.Assembly._GetType(String name, Boolean throwOnError, Boolean ignoreCase) +0
   System.Reflection.Assembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase) +42
   System.Web.UI.Util.GetTypeFromAssemblies(ICollection assemblies, String typeName, Boolean ignoreCase) +145
   System.Web.UI.TemplateParser.GetType(String typeName, Boolean ignoreCase, Boolean throwOnError) +73
   System.Web.UI.TemplateParser.ProcessInheritsAttribute(String baseTypeName, String codeFileBaseTypeName, String src, Assembly assembly) +111
   System.Web.UI.TemplateParser.PostProcessMainDirectiveAttributes(IDictionary parseData) +279

 


--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053

 

by: locke_aPosted on 2009-09-29 at 15:21:16ID: 25453990

I've not seen this message before.  Do any of the solutions here (http://www.ironspeed.com/designer/4.2.2/webhelp/Part_VI/Security_Exception_AspNetHostingPermission_Error.htm) apply to your situation?

 

by: EYoungPosted on 2009-09-29 at 15:33:00ID: 25454058

Not sure.  I just want to create a simple vb.net app and have it run from my company's intranet.  Thanks for sticking with me.

 

by: EYoungPosted on 2009-09-29 at 15:34:34ID: 31634942

No answer as of yet.  Still searching...

20120131-EE-VQP-002

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