Letter of authorization

Letter of authorization

1. Delegate code

Public delegate void myDelegate (string str );
Public static void HellowChinese (string strChinese)
{
Console. WriteLine ("Good morning," + strChinese );
Console. ReadLine ();
}

2. Action: Specify the delegates with only input parameters and no return value.

Public static void HellowChinese (string strChinese)
{
Console. WriteLine ("Good morning," + strChinese );
Console. ReadLine ();
}

Action <string> action = HellowChinese;
Action ("Spring .");

3, Func: returned value!

Public static string HelloEnglish (string strEnglish)
{
Return "Hello." + strEnglish;
}

Func <string, string> f = HelloEnglish;
Console. WriteLine (f ("Srping ji "));
Console. ReadLine ();