private static void SendEmailAsyncFinish(IAsyncResult vResult) //this function is called upon finish of the async operation. its only purpose is to close the generic pointer construction which is still using memory.
{
AsyncResult vResultTemp = vResult as AsyncResult; //cast vResult to AsyncResult
delegateSendEmailAsync vDelegate = vResultTemp.AsyncDelegate as delegateSendEmailAsync; //receive the generic pointer construction
try
{
vDelegate.EndInvoke(vResult); //wait for the async operation to finish and close it
}
catch (Exception vError)
{
//log error
}
}
private delegate void delegateSendEmailAsync(string vTemplateName, Dictionary <RecipientType, string> vAddresses, string vSubject, Dictionary <String, Object> vValues); //this is a generic pointer construction, it can point to any function using the given signature. it can execute asynchronously, that's why I use it.
public static void SendEmailAsync(string vTemplateName, Dictionary <RecipientType, string> vAddresses, string vSubject, Dictionary <String, Object> vValues)
{
delegateSendEmailAsync vCallSendEmail = new delegateSendEmailAsync(SendEmail); //this uses the generic pointer to point to the function SendEmail
vCallSendEmail.BeginInvoke(vTemplateName, vAddresses, vSubject, vValues, new AsyncCallback(SendEmailAsyncFinish), null); //the execution of function SendEmail is started asynchronously, when it finishes it calls SendEmailAsyncFinish
}