- We can call the methods asynchronously using custom delegate that has an exact signature of method that you want to call asynchronously.
- To know the completion status of the asynchronous method AsyncCallback delegate can be used.
Below example illustrates the Asynchronous method execution.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace AsyncDemo
{
class Program
{
static void Main(string[] args)
{
AsyncDemo ad = new
AsyncDemo();
AsyncDelegate asyncDelegate = new AsyncDelegate(ad.AsyncDelegate);
AsyncCallback callback = new
AsyncCallback(ad.Status);
IAsyncResult result =
asyncDelegate.BeginInvoke(callback, null);
Console.WriteLine("Async
method execution is running and status of completion is {0}",
result.IsCompleted);
Console.ReadLine();
}
}
public delegate void AsyncDelegate();
public class AsyncDemo
{
/// <summary>
/// Method that executes
asynchronously
/// </summary>
public void
AsyncDelegate()
{
int a = 0;
for (int i = 0; i
< 2000000000; i++)
{
a += i;
}
Console.WriteLine("total {0}", a);
}
/// <summary>
/// Callback method that is
invoked after the completion of async method execution
/// </summary>
/// <param name="result"></param>
public void Status(IAsyncResult result)
{
Console.WriteLine("Async
method execution is completed");
}
}
}
For more information follow the link http://msdn.microsoft.com/en-us//library/2e08f6yc.aspx
