static void Main(string[] args)
{
PrintStrDelegate ps1 = new PrintStrDelegate(WriteToScreen);
PrintString.Print("Hello World", ps1);
PrintStrDelegate ps2 = WriteToFile;
PrintString.Print("Hello Delegate!!!", ps2);
}
public static void Print(string str, PrintStrDelegate ps)
{
Console.WriteLine("Print(string str, PrintStrDelegate ps)");
ps(str);
}
static void Main(string[] args)
{
Printer printer = new Printer();
//委托与实例方法进行绑定
PrintIntDelegate printInt1 = new PrintIntDelegate(printer.PrintInt_1);
Console.WriteLine("通过委托调用实例方法");
printInt1(100);
Console.WriteLine();
//委托与静态方法绑定
PrintIntDelegate printInt2 = new PrintIntDelegate(Printer.PrintInt_2);
Console.WriteLine("通过委托调用静态方法");
printInt2(100);
Console.WriteLine();
//带有返回值得多播委托
PrintIntDelegate printInt3 = printInt1 + printInt2;
printInt3 = (PrintIntDelegate)Delegate.Combine(printInt1, printInt2);
//调用带有返回值得多播委托
Console.WriteLine("调用带有返回值得多播委托");
int iRet = printInt3(1000);
Console.WriteLine("委托的个数: " + printInt3.GetInvocationList().Length);
Console.WriteLine("多播委托返回值: iRet= " + iRet);
Console.WriteLine();
printInt3 = printInt3 - printInt2;
Console.WriteLine("委托进行减法运算");
iRet = printInt3(1000);
Console.WriteLine("委托的个数: " + printInt3.GetInvocationList().Length);
Console.WriteLine("委托返回值: iRet =" + iRet);
Console.WriteLine();
//无返回值的的多播委托
PrintStrDelegate printStr;
printStr = new PrintStrDelegate(printer.PrintStr_1);
printStr += new PrintStrDelegate(Printer.PrintStr_2);
printStr("c# winform");
Console.Read();
}
