一个基本的委托例子。
做一个乘法和除法。
View Code
delegate double ProcessDelegate(double param1, double param2);
static double Multiply(double param1, double param2)
{
return param1 * param2;
}
static double Divide(double param1, double param2)
{
return param1 / param2;
}
static void Main(string[] args)
{
ProcessDelegate process;
Console.WriteLine("Enter 2 numbers separated with a comma:");
string input = Console.ReadLine();
int commaPos = input.IndexOf(',');
double param1 = Convert.ToDouble(input.Substring(0, commaPos));
double param2 = Convert.ToDouble(input.Substring(commaPos + 1, input.Length - commaPos - 1));
Console.WriteLine("Enter M to multiply or D to divide");
input = Console.ReadLine();
if (input == "M")
process = new ProcessDelegate(Multiply);
else
process = new ProcessDelegate(Divide);
Console.WriteLine("Result: {0}", process(param1, param2));
Console.ReadKey();
}
运行结果如下: