SSL Certificate Validation Error in .Net

// This callback method is used to validate the certificate in an SSL conversation
// Changed the handle to ignore the SSL Certificate errors in the development mode.
private static bool ValidateCertificateCallback(object sender, X509Certificate certificate,
                                                X509Chain chain, SslPolicyErrors policyErrors)
{
	// When running the developer mode, ignore all type of SSL connection error
	if (System.Configuration.ConfigurationManager.AppSettings["developMode"] == "true")
		return true;
	else
		// Return true only if there are no SSL Policy errors
		return policyErrors == SslPolicyErrors.None;
}

// Register a callback function to listen for all the SSL certificate errors (for push completion notification)
RemoteCertificateValidationCallback callbackHandler = new RemoteCertificateValidationCallback(ValidateCertificateCallback);
ServicePointManager.ServerCertificateValidationCallback += callbackHandler;
 
try
{
	// HTTP Get/Post request code goes here
}
catch (Exception exc)
{
	// Handle any other exceptions gracefully
}
finally
{
	// As the SSL certificate handler callback is global, so remove it as soon as push notification is sent to avoid
	// conflict with other HTTPS connections
	ServicePointManager.ServerCertificateValidationCallback -= callbackHandler;
}