获取方法并调用它
获取 Instance 方法并调用它
using System;
public class Program
{
public static void Main()
{
var theString = "hello";
var method = theString
.GetType()
.GetMethod("Substring",
new[] {typeof(int), typeof(int)}); //The types of the method arguments
var result = method.Invoke(theString, new object[] {0, 4});
Console.WriteLine(result);
}
}
输出:
地狱
获取静态方法并调用它
另一方面,如果方法是静态的,则不需要实例来调用它。
var method = typeof(Math).GetMethod("Exp");
var result = method.Invoke(null, new object[] {2});//Pass null as the first argument (no need for an instance)
Console.WriteLine(result); //You'll get e^2
输出:
7.38905609893065