DevForce Community Forum : VS2008 UserControl http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce Classic : VS2008 UserControl Wed, 13 May 2026 16:50:15 -700 Wed, 11 Jun 2008 11:24:08 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=829 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ VS2008 UserControl : Thanks for your response. This... http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3063#3063 Author: pucsoftware
Subject: 829
Posted: 11-Jun-2008 at 11:24am

Thanks for your response. This worked.
 
Darren
]]> Wed, 11 Jun 2008 11:24:08 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3063#3063 VS2008 UserControl : Darren, I have helped many... http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3037#3037 Author: davidklitzke
Subject: 829
Posted: 06-Jun-2008 at 8:22am

Darren,
 
I have helped many customers with this problem.  For example, this is a typical response:

 
We have resolved your problem.

You will need to change the load handler for your User Control.

Change this code:

 

#Region "UserControl Events"

    Private Sub UserControl_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

            mPersMgr = PersistenceManager.DefaultManager

    End Sub

 

To this code:

 

#Region "UserControl Events"

    Private Sub UserControl_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If Not Me.DesignMode Then

            mPersMgr = PersistenceManager.DefaultManager

        End If

    End Sub

The reason for this code change is that the Visual Studio Designer will blow up if it executes any PersistenceManager code.  Apparently, the Load event occurs in the Designer.  By checking whether your code is executing in the Designer (by testing whether DesignMode is true), you stop the assignment of your private PersistenceManager.

 



Edited by davidklitzke - 06-Jun-2008 at 8:23am]]> Fri, 06 Jun 2008 08:22:38 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3037#3037 VS2008 UserControl : After messing with this some,... http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3036#3036 Author: pucsoftware
Subject: 829
Posted: 06-Jun-2008 at 8:00am

After messing with this some, I figure that this issue has something to do with deployment of the necessary files. Even though I have all these projects in one solution, and the second project with the user control works correctly, the third project with the windows form is missing something. I made sure that the windows form project had references to all the same devexpress and devforce assemblies that the project with the user control has. This helped but didn't fix the problem. I'm getting a similar message but with different errors. Here is another picture of what I'm getting.
 
Darren
]]> Fri, 06 Jun 2008 08:00:16 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3036#3036 VS2008 UserControl : I have created three projects.... http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3035#3035 Author: pucsoftware
Subject: 829
Posted: 06-Jun-2008 at 7:21am

I have created three projects. One is the DevExpress objects for my data, the second is a user control that uses the first project where I have created a Windows user control to access the data. The third project is a test form that references the first two projects. When I place the user control from the second project on the form I get an error message that a valid configuration file can not be found. This was working but as I continued to build the user control I started getting this error and the user control can't be displayed on my Windows form. I'm including a picture of the error I am getting. Can you tell me what is wrong?
 
Darren
]]> Fri, 06 Jun 2008 07:21:11 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=829&PID=3035#3035