C#不了解此代码... [英] C# Not understanding this code...............

问题描述

能帮我这是我的代码吗?

Can some please help me this is my code

// the death movment
private void timer2_Tick(object sender, EventArgs e)
{
    int movement = (label2.Text == "This Is Level 1") ? 5 : 15;
    // level 1
    if (label2.Text == "This Is Level 1")
    {
        if (Death.Width == 64)
        {
            Death.Location = new Point(Death.Location.X + movement, Death.Location.Y);
        }

        if (Death.Location == new Point(390, 202))
        {
            Death.Width = 63;
        }
        if (Death.Width == 63)
        {
            Death.Location = new Point(Death.Location.X - movement, Death.Location.Y);
        }

        if (Death.Location == new Point(30, 202))
        {
            Death.Width = 64;
        }
    }
    // level 2
    if (label2.Text == "This Is Level 2")
    {
        if (Death.Width == 64)
        {
            Death.Location = new Point(Death.Location.X + movement, Death.Location.Y);
        }

        if (Death.Location == new Point(390, 202))
        {
            Death.Width = 63;
        }
        if (Death.Width == 63)
        {
            Death.Location = new Point(Death.Location.X - movement, Death.Location.Y);
        }

        if (Death.Location == new Point(30, 202))
        {
            Death.Width = 64;
        }
    }

}

我试图在另一篇文章中问这个问题，但是我没有答案，所以无论如何，我不知道这部分是做什么的.

I tried asking this in another post but i got no answer, so anyway, i dunno what this part does.

int movement = (label2.Text == "This Is Level 1") ? 5 : 15;

在这一部分

at this end part

? 5 : 15;

推荐答案

查看

See what the documentation says[^]. :)

After reading the documentation about the conditional operator

(?:)

的文档后，您将发现，如果label2的文本与"This Is Level 1"完全相同，则movement将为5，否则movement将为15.因此，您可以重写与以下行相同:

you will figure out that if the text of label2 is exactly equal to "This Is Level 1" then movement will be 5 otherwise movement will be 15. So you can rewrite the same line as:

int movement = 15; // Initially 15

// Check if we need to assign 5 as value
if(label2.Text == "This Is Level 1")
  movement = 5;

看到不需要else块，因为我选择用15初始化movement，我希望现在一切都清楚了. :)

See that there is no need for else block, because I choose to initialize movement with 15. I hope it is all clear now. :)

int movement = (label2.Text == "This Is Level 1") ? 5 : 15;

OR

OR

int movement = 0;
if(label2.Text == "This Is Level 1")  
   movement = 5;
else 
   movement = 15;

谢谢，
Imdadhusen

Thanks,
Imdadhusen

int movement = 15;
if (label2.Text == "This Is Level 1")
    movement = 5;

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