Mega Code Archive
Demonstrate multicasting
<![CDATA[
Create an invocation list, or chain, of methods that will be called when a delegate is invoked.
using System;
delegate string StrMod(ref string str);
class MultiCastDemo {
static string replaceSpaces(ref string a) {
Console.WriteLine("replaceSpaces");
return a;
}
static string removeSpaces(ref string a) {
Console.WriteLine("removeSpaces");
return a;
}
static string reverse(ref string a) {
Console.WriteLine("reverseSpaces");
return a;
}
public static void Main() {
StrMod strOp;
StrMod replaceSp = new StrMod(replaceSpaces);
StrMod removeSp = new StrMod(removeSpaces);
StrMod reverseStr = new StrMod(reverse);
string str = "This is a test";
// Set up multicast.
strOp = replaceSp;
strOp += reverseStr;
// Call multicast.
strOp(ref str);
// Remove replace and add remove.
strOp -= replaceSp;
strOp += removeSp;
str = "This is a test."; // reset string
// Call multicast.
strOp(ref str);
}
}
replaceSpaces
reverseSpaces
removeSpaces
]]>