Okay, I came across this error today:
Warning 1
The service System.Windows.Forms.Design.IEventHandlerService already exists in the service container.
Parameter name: serviceType
and it took me a while to find the solution. In my case, and I say this because I’m not sure if this will work in your case… the solution was as simple as cleaning the OBJ folder manually.
Other tip I can give you in case the previous one doesn’t work for you , is to add the following line to all your form Load events:
if (DesignMode) return;
However, in my case, cleaning the OBJ folder, was what brought peace and mental sanity back to me.
Feel free to post your experiences/solutions, so others can recover their peace of mind as well.
Tags: .NET, C#, Designer, IEventHandlerService, System.Windows.Forms.Design. IEventHandlerService, Visual Studio
April 9th, 2009 at 1:38 pm
work for me!
thanks
May 2nd, 2009 at 1:15 am
Yes.. it works by cleaning the OBJ folder manually..Thanks:))
May 7th, 2009 at 2:18 am
hello ….. your solution works for standard windows applications but how you overcome this problem when your application targets mobile devices. In this situation you dont have a “DesignMode”.
I cleaned the obj folder manually but still …..
Any idea?
June 14th, 2009 at 7:36 am
Thanks for the tip, this helped. Even a full Clean/Rebuild didn’t do the trick, but cleaning the obj folder did the trick.
I have found that the DesignMode flag is not reliable. In certain circumstances, I resort to getting the current process and compare its name to my application’s name.
Process p = Process.GetCurrentProcess();
if (p.ProcessName!= “MyApplicationName)
{
return;
}
Helps most of the time, but occasionally I get stuck and have to find the right place to put conditional code.
It is especially important to put be careful what goes into the constructor(s) as well.
Thanks again!
January 11th, 2010 at 10:31 am
Cleaning the obj folder manually works. But I am getting this error now -
Could not load file or assembly ‘Interop.SHDocVw, Version=1.1.0.0, Culture=neutral, PublicKeyToken=4b827ebe229d539f’ or one of its dependencies. The system cannot find the file specified.
- Arunabh Das
April 7th, 2010 at 11:26 am
Thanks a lot for the tip. It worked !
April 16th, 2010 at 12:28 pm
I had today the same error. I needed to delete also the BIN folder.
Now it is good.
Thanks