Using AjaxPro2.dll from Michael Schwarz

*Add web Config
inside configuration/configSections

inside configuration/system.web/httpHandlers



*add reference AjaxPro2.dll into the bin folder
using AjaxPro;

* in page load (postback and not) - add Utility.RegisterTypeForAjax(typeof(_Default));

*On client ajax method add attribute
[AjaxMethod(HttpSessionStateRequirement.ReadWrite)] public string MyAjaxMethod(string username)
{
return "Halo" + UserName;
}


*call in client javascript
_Default.MyAjaxMethod("Kurniawan").value

Thread and Delegate Issue

Run Thread with Parameters
----------------------------------------------
*** But it is only limited to 1 object...
Thread t = new Thread(new ParameterizedThreadStart(Run));
t.Start("an Object");

or using Thread Pool
-----
ThreadPool.QueueUserWorkItem(new WaitCallback(Run), "an Object");
-----

----------------------------------------------------------
*** Use Class method...
public class UrlFetcher

{
  string url

  public UrlFetcher (string url)
  {
      this.url = url;
  }

  public void Fetch()
  {
      // use Any Attribute here
  }
}

UrlFetcher fetcher = new UrlFetcher (myUrl);// Set All the input
new Thread (new ThreadStart (fetcher.Fetch)).Start();

-------------------------------
or Call Delegate Asyn

delegate void MyDel(object a, object b);

          MyDel d = new MyDel(Fetch);
          d.BeginInvoke(a,b,new AsyncCallback(AfterRun),"this is state");

====================================

===================================================
CALL DELEGATE Dynamically

void Force(Delegate method, object[] args)
{
method.DynamicInvoke(args)
}

Coding Issue

Finalize VS Descructor


Finalize and (~) Desctructor is the same

in VB - use Finalize
but
in C# - u can not use Finalize - must be desctructor (~)

Protected Overrides Sub Finalize()
' Desctructor code to free unmanaged resources
MyBase.Finalize()
End Sub

~ ClassName(){}


***Desctructor will be called by the garbage collector - if you call
GC.Collect();





-------------------------------------
GC.Collect VS GC.SuppressFinalize(Object)
Collect - will run Garbage Collector - which run your Desctructor / finalize
- However I realize It will run before you create another object.

SuppressFinalize - will not run.. your desctructor on the object



-------------------------------------
Dispose() Vs Descructor

Desctructor - will guarantee run by Garbage Collector - But It may time Lag even you put GC.Collect(); - it Collect.. after you create another object

Dispose - If you need to explicitly clean up without waiting GC...
- But It will not be run by GC - You need to call
YourObject.Dispose();

or using using Keyword in CS
Using(Object obj = new Object);

Note you call the Dispose method yourself and in Desctructor there is .Dispose as well...
, you should suppress garbage collection on the object once it's gone, as we'll do here.

*** My preference is use Desctructor... to eliminate the risk - and called GC.Collect();


-------------------------------------
ROUNDING Decimal 2 Digit
Math.round(123.23123 * 100) / 100
ROUNDING Decimal 3 Digit
Math.round(123.23123 * 1000) / 1000

-------------------------------------
REF and OUT in C#
Ref to use in and out..
out is for out only... you can not parse put input in it... you need to init inside the method...
--------------------------------------