FieldHandle

using System;//jav a  2s .c om
using System.Reflection;

public class MyClass
{
    public string MyField = "Microsoft";
}

public class FieldInfo_FieldHandle
{
    public static void Main()
    {
        MyClass myClass =new MyClass();
        Type myType = typeof(MyClass);
        try
        {
            FieldInfo myFieldInfo = myType.GetField("MyField", BindingFlags.Public | BindingFlags.Instance);
            if(myFieldInfo!=null)
            {
                RuntimeFieldHandle myFieldHandle=myFieldInfo.FieldHandle;
                DisplayFieldHandle(myFieldHandle);
            }
            else
            {
                Console.WriteLine("The myFieldInfo object is null.");
            }
        }  
        catch(Exception e)
        {
            Console.WriteLine("Exception: {0}", e.Message);
        }
    }

    public static void DisplayFieldHandle(RuntimeFieldHandle myFieldHandle)
    {
        FieldInfo myField = FieldInfo.GetFieldFromHandle(myFieldHandle);      
        Console.WriteLine("The type is {0}.", myField.ToString());
    }
}

using System;//from  j  a v  a2s.c  om
using System.Reflection;

public class MainClass
{
    public string x;
    public char y;
    public float a;
    public int b;

    public static void Main()
    {
        Type myType = typeof(MainClass);
        FieldInfo [] myFieldInfoArray = myType.GetFields();
        RuntimeFieldHandle myRuntimeFieldHandle;
        for(int i = 0; i < myFieldInfoArray.Length; i++)
        {
            myRuntimeFieldHandle = myFieldInfoArray[i].FieldHandle;
            FieldInfo myFieldInfo = FieldInfo.GetFieldFromHandle(myRuntimeFieldHandle);
            Console.WriteLine("{0}", myFieldInfo);
        }
    }
}