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Use any logging framework to log such exception/messages. You cannot / should not use messagebox at service end.

Are you talking about when debugging the application ? Because while running the application directly, I didnt faced any such issue.

To connect to the FTP server we can use the FtpWebRequest C# object under the System.Net namespace. The object is created with the FtpWebRequest.Create() function. Note that the function will ask for...

The best way is it log that error in release mode and paste the error here. Without knowing the kind of error, we are helpless.

You need to use reflection to load the dll at run time and invoke its method.

"and if I simply catch the exception and don't throw it further it will run into other exceptions, causing the same issue."

Why so if you already caught the exception, why would you proceed,...

I guess unless all elements are loaded, that event isn't fired at all.

Use DocumentCompleted event of webbrowser control.

Is wc reference of webclient object ?

I guess there is another way to specify the arguments, may be some kind of identifier to specify the filename to be executed by console2.exe

You can create instance of usercontrols and then access the public method of those usercontrols.

There is no way to solve your problem unless we know the logic behind that method.