How To Modify The Web Config AppSettings At Runtime
In some situation, we may have to modify the appsettings value on web.config at runtime.
We can definitely modify the web.config at runtime but it would restart the Application again.
Hence we recommand to call the value from XML or Resource File which will not alter the Application.

Consider, we are fetching the above given Appsettings value.
For changing it on runtime, implement the following code.

By writing the above code, we can resolve this issue.
