C# delegate 委派

1.把方法當作參數傳到另一個方法裡面使用
好處:可以快速切換多個方法，不用改名字



 protected void Button1_Click(object sender, EventArgs e)
    {
        customAction = Test1;
        Label1.Text=Test2(11, customAction).ToString();
     
    }
public delegate double Predicate(double s);
Predicate customAction;
    public double Test2(double number,Predicate c)
    {
        number=c(number);
        return number;
     
    }
    private double Test1(double amount) {
 
 amount++;

    return amount;
}

參考:
https://eric0806.blogspot.tw/2015/01/dotnet-delegate-usage.html