This is a very typical thing we do, but at least in .NET Framework 2.0 there still is not an easy solution for this, and using the App.config approach, you will soon realize that you run into two problems (I am not going into the security aspects of it.)
- You could store the entire connection string as the Application level configuration parameter in app.config but if you do that then you cannot change and save the string from anything in the applications section.
- But you have to change the instance of that string in order to easily propagate the connection string to all TableAdapters
string s = Properties.Settings.Default.MyConnectionString;
s = s.Replace("(local)", "192.168.0.100"); // This can come from another user configuration string.
Properties.Settings.Default["MyConnectionString"] = s;
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