Answer by Masoud Siahkali for Reading settings from app.config or web.config in .NET

Read From Config:

You'll need to add a reference to the configuration:

1. Open "Properties" on your project
2. Go to "Settings" Tab
3. Add "Name" and "Value"

4. Get Value with using following code:

   string value = Properties.Settings.Default.keyname;

Save to the configuration:

   Properties.Settings.Default.keyName = value;   Properties.Settings.Default.Save();