如何在没有明确提及他的名字的情况下访问事件函数的变量？ [英] How to access variable of the event function without explicit mention his name?

问题描述

假设我在广场并运行他的事件功能，

如何在不明确转向变量的情况下访问其颜色？

Suppose I am in the square and I run his event function,
How can I access to its color without turning to the variable explicitly?

private void recblack_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        { <--! i don't want to mention his name (recblack)>
            colorpiker.Fill = recblack.Fill;

        }

推荐答案

试试这个：

Try this:

private void recblack_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
    {
    WhatEverControlTypeItIs rb = sender as WhatEverControlTypeItIs;
    if (rb != null)
        {
        colorpiker.Fill = rb.Fill;
        }
    }

所以如果recBlack是一个Button：

So if recBlack was a Button:

private void recblack_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
    {
    Button but = sender as Button;
    if (but != null)
        {
        string s = but.Text;
        }
    }

等等

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