C# Task Parallel Library

	public partial class WebForm1 : System.Web.UI.Page
	{
	static string strOut = "";
	static string strOut1 = "";
	protected void Page_Load(object sender, EventArgs e)
	{
	Response.Write("Start with Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime StartTPL = System.DateTime.Now;
	Parallel.For(0, 100000, x => PrintAllTPL());
	Response.Write("End with Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime EndTPL = System.DateTime.Now;
	Response.Write("Start with out Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime StartNoTPL = System.DateTime.Now;
	PrintAll();
	Response.Write("End with out Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime EndNoTPL = System.DateTime.Now;
	Response.Write("Time with Task Parallel Library: " + EndTPL.Subtract(StartTPL) + "<br />");
	Response.Write("Time without Task Parallel Library: " + EndNoTPL.Subtract(StartNoTPL) + "<br />");
	}
	private static void PrintAll()
	{
	for (int i = 0; i < 100000; i++)
	{
	strOut = strOut + "a" + "\n";
	}
	}
	private static void PrintAllTPL()
	{
	strOut1 = strOut1 + "a" + "\n";
	}
	}

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in the above scenario TPL is working fine, but look at below scenario..I use Foreach

	public partial class XMLread : System.Web.UI.Page
	{
	public static string[] stringList = { "dog", "cat", "bird" };
	protected void Page_Load(object sender, EventArgs e)
	{
	Response.Write("Start with Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime StartTPL = System.DateTime.Now;
	Parallel.For(0, 100000, x => PrintAllTPL());
	Response.Write("End with Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime EndTPL = System.DateTime.Now;
	Response.Write("Start with out Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime StartNoTPL = System.DateTime.Now;
	PrintAll();
	Response.Write("End with out Task Parallel Library" + System.DateTime.Now.ToString() + "<br />");
	DateTime EndNoTPL = System.DateTime.Now;
	Response.Write("Task Parallel Library: " + EndTPL.Subtract(StartTPL) + "<br />");
	Response.Write("No Task Parallel Library: " + EndNoTPL.Subtract(StartNoTPL) + "<br />");
	}
	private static void PrintAll()
	{
	foreach (string s in stringList)
	{
	var result = s;
	Console.WriteLine("Initial string: {0}, Result : {1} ", s, result);
	}
	}
	private static void PrintAllTPL()
	{
	Parallel.ForEach(stringList, s =>
	{
	var result = s;
	Console.WriteLine("Initial string {0}, Result : {1} ", s, result);
	});
	}
	}

view raw gistfile1.cs hosted with ❤ by GitHub

If you have less data, TPL will not work good. Never use this type of syntax for xml read, it will not work.. Parallel.ForEach(AllXMLNodes, element => { //do something }); https://www.youtube.com/watch?v=No7QqSc5cl8