using System;
namespace ConsoleApplication1
{
class Program
{
delegate void void_int_delegate(int x);
delegate int int_int_delegate(int x);
static void Main(string[] args)
{
//Create a delegate that writes its argument +1 using anonymous delegate syntax
void_int_delegate d = delegate(int i) { Console.WriteLine(i + 1); };
d(1);
//overwrite the delegate with an equavalent one using the lamda syntax
d=(int j)=>Console.WriteLine(j+1);
d(1);
//The equivalent of the previous versions but that return values
int_int_delegate e = delegate(int i) { Console.WriteLine(i + 1); return i + 1; };
Console.WriteLine(e(2));
e = (int j) => { Console.WriteLine(j + 1); return j + 1; };
Console.WriteLine(e(2));
Console.ReadKey();
}
}
}
P.S. There's another, very practical, version that I've run into lately that avoids having to declare the delegate methods before-hand:
Func<XmlDocument,string,string> extractText = (xmldocument, xpath) =>
{
var n=xmldocument.SelectSingleNode(xpath);
if(n==null) return "";
return n.InnerText;
};
string file_name = extractText(xdoc, String.Format("//function[name='{0}']/dll/file", FunctionName));
string class_name = extractText(xdoc, String.Format("//function[name='{0}']/dll/class", FunctionName));
802701 A.D. 