ConfigurationSettings.AppSettings (Setting the Value Problems)

Ok, I don't have any problems getting the data but I have problems setting the data at run-time. I am using

Code:

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ConfigurationSettings.AppSettings.Set(key, value);

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And I get "Collection is read-only"

Any ideas?

You can't set values, only read them. You have to put them manually in the XMl

Ok, lets say I want to detect the window size when they close it and save it for the next time they open the application, how do I do that? You have got to be able to set and change the values in the xml file.

Anyone?? Pirate, help!!! :(

Yeah , PT Exorcist is right . You can only read the settings from App setting file . Here's an example on Edneeis's site . http://www.edneeis.com/example.aspx?ID=13