Action Script 3.0 and .NET --- A Bridge

hi All,

In this post i will use AMF.net to create a bridge between action script(AS) and .NET code.

as an over view we will create the front end of the application in action script and will call the .net classes which are connected to the Database and will get the results back to action script after that we will be parsing the results to display in AS.

Step 1:

Create a .NET class library project with a class defined in it. Let us call it "MyClass"

namespace MyClasses
{
    public class MyClass
    {

        #region Constructor
        public MyClass()
        {

        }

        #endregion

        public static List<myclass> getAllNotes()
        {

            SqlParameter[] prams = null;
            List<myclass> words = new List<myclass>();
            IDataReader reader = null;

            using (DbManager db = DbManager.GetDbManager())
            {
                try
                {
                    // DB logic to return a List 
                }
                catch (Exception)
                {
                    // Exception logging needed
                }
                finally
                {
                    if (reader != null)
                        reader.Close();
                }
                return MyClass;
            }
        }
    }
}

After the class is done build the library project and add reference of it to the ASP.net Web site.

Step 2:

http://amfnet.openmymind.net/ Go to the URL and download the AMF.net classes and follow the first two steps mentioned in http://amfnet.openmymind.net/howto/index.php.

Step 3:

As we will be using AS 3.0 so we can not use the step 3 and 4 code mentioned in above link.

Create a flash application and write the following code in MXML file

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
backgroundColor="#FFFFFF"
applicationComplete="init();">
<mx:Script>
<![CDATA[
import mx.messaging.channels.StreamingAMFChannel;

import flash.net.Responder;

import mx.collections.ArrayCollection;
import mx.controls.Label;

private var rs:RemotingService;
private var _myArrayCollection:ArrayCollection;


private function init():void

{


rs = new RemotingService("http://localhost:50020/MyWeb/gateway.php");

var responder:Responder = new Responder(onResult, onFault);

var params:Object = new Object();

params.arg1 = "1";


rs.call("MyClasses.MyClass, Library.getAllNotes", responder);



}

private function onResult(result:Object):void

{

trace(result);

var s:String = "";


var length:int = result.length;
var tempArray:Array = [];



for(var i:int=0; i<length; i++)

{

s += result[i].word + " " + result[i].Property1;
s += result[i].word + " " + result[i].Property2;
//var tempObj:Object = {
//name:result[i].word,
//birthday:result[i].WordCategory
//}


//tempArray.push(tempObj);

}

myLabel.text = s.substring(0,50);
//_myArrayCollection = new ArrayCollection(tempArray);


}


private function onFault(fault:Object):void

{

trace(fault.toString());

}


]]>
</mx:Script>
<mx:Label id="myLabel" visible="true" x="200" y="150" color="#111111" text="thisss" >

</mx:Label>
<mx:Text id="myText" x="200" y="550" >

</mx:Text>
</mx:Application>

Step4:

In the above code the highlighted region is to be replaced with fully Qualified name that is "NameSpace.ClassName, LibararyName.FunctionToBeCalled"


Step 5:

rs.Call will have all the parameters that will be send to the function if the function accpets parameters.

Step 6:

In the function onResult() we will get the response object as in the above case we will be having a list which we will parse to show the desired result in string.


Hope it simplifies the Things

Happy coding.