When I try to add an image to a picture box ,I get the following error message. This error occurs with every control (i.e. with buttons, lables,etc) whithin the solotion. My project contains 4 sub project including a web service.
Error: "An item with the same key has already been added"
How to solve this problem.

Windows Forms
cool dude
Manoj_Raj
Nick V
Check your resources to see if an image with that name is already present. It will not allow a duplicate image name in the resources for obvious reasons.
Phil Wright
http://www.componentfactory.com
Free user interface controls for .NET2
Flippie
If this is in 2005 you may have more than one resources file saved with the same name. Look in the projects properties folder. In there is a resource file called Resources.resx, if you also have a resource file with the same name specified in your project, this will be the cause of the problem.
Either remove your resource file and move your resources the the one in the the properties folder or rename your resource file.