Every time I make changes to my WS and update the reference in Visual Studio, VS overwrites my app.config with additional unnecessary information. So when I start my client
Stop changing your WS!?! :P
Seriously though, since you are updating your WS and then updating the reference it is going to update the app.config / web.config. The reason is because there is a section under applicationSettings that reference the WS.
EX:
<applicationSettings>
<RemoteAssessment.CatCall.My.MySettings>
<setting name="RemoteAssessment_CatCall_CATService01_CATService"
serializeAs="String">
<value>URLTOSERVICE/catservice.asmx</value>
</setting>
</RemoteAssessment.CatCall.My.MySettings>
</applicationSettings>
Sadly, I do not think there is a way to stop VS from updating the app.config. I could be wrong though.
Ended up doing this programmatically which solved the problem.