Setting ApplicationKey and SecretKey in Faceboot.Net library for FaceBook application

There are 2 unique pieces of information that are used in development of FaceBook application, Application Key and Secret key. When you are using Facebook.Net development kit for building FaceBook applications in ASP.Net, these 2 values are specified in configuration file under facebook section. If you do not specify these values in configuration file, your application will throw InvalidOperationException. Facebook.Net library tries to verify these 2 pieces of infomation very early in the stage during PagePreLoad event. If you don't feel comfortable leaving this information in configuration file and want to set it programatically, you can provide override method for OnInit in your page and set the values there.

protected override void OnInit(EventArgs e)
{
  base.OnInit(e);
  if (string.IsNullOrEmpty(MyFaceBookApp.Secret))
  {
     MyFaceBookApp.Secret = "xxxxxxxxxxxxxxxxxxxxxxx";
  }
  if (string.IsNullOrEmpty(MyFaceBookApp.ApplicationKey))
  {
     MyFaceBookApp.ApplicationKey = "xxxxxxxxxxxxxxxxxxxxxxxx";
  }
}