public void WriteLineCallback(IAsyncResult iar)
{
Console.WriteLine("In WriteLineCallback");
FuncToCall func = (FuncToCall)iar.AsyncState;
func.EndInvoke(iar);
}
public void CallWriteLineWithCallback(string s)
{
FuncToCall func = new FuncToCall(Console.WriteLine);
func.BeginInvoke(s,
new AsyncCallback(WriteLineCallback),
func); // shows up as iar.AsyncState in callback
}
public void CallWriteLine(string s)
{
// delegate points to function to call
// start the async call
// wait for completion
FuncToCall func = new FuncToCall(Console.WriteLine);
IAsyncResult iar = func.BeginInvoke(s, null, null);
func.EndInvoke(iar);
}
