如何在C＃中使用IF语句（Windows窗体） [英] How to use IF statements in C# (Windows Forms)

问题描述

好的，我知道如何"IF"作品。我得到了如何嵌套它们。

Okay, so, I get how "IF" works. And I get how to nest them.

我想做的是在我的表单上有一个按钮，当你点击它时，它会看起来在几个IF。像这样：

What I wanna do is have a button on my form that when you click it, it will look at several IFs. Like this:

namespace buttonTesting
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public bool box1;
        public bool box2;
        public bool box3;
        public bool box4;
        public bool box5;
        public bool box6;
        public bool box7;
        public string ret1;
        public string ret2;
        public string ret3;
        public string ret4;
        public string ret5;
        public string ret6;
        public string ret7;

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {

            if (box1 == true)
            {
                Console.WriteLine(ret1);
                
            }

其他

{

Console.WriteLine（" B1 off"）;

Console.WriteLine("B1 off");

}
if（box2 == true）
{
Console.WriteLine（ret2）;

}
其他
{
Console.WriteLine（" B2 off"）;
}
if（box3 == true）
{
Console.WriteLine（ret3）;

}
else
{
Console.WriteLine（" B3 off"）;
}
if（box4 == true）
{
Console.WriteLine（ret4）;

}
else
{
Console.WriteLine（" B4 off"）;
}
if（box5 == true）
{
Console.WriteLine（ret5）;

}
else
{
Console.WriteLine（" B5 off"）;
}
if（box6 == true）
{
Console.WriteLine（ret6）;

}
else
{
Console.WriteLine（" B6 off"）;
}
if（box7 == true）
{
Console.WriteLine（ret7）;

}
else
{
Console.WriteLine（" B7 off"）;
}
}

private void checkBox1_CheckedChanged（object sender，EventArgs e）
{
box1 = true;
ret1 =" Box1" ;;
}
private void checkBox2_CheckedChanged（object sender，EventArgs e）
{
box2 = true;
ret2 =" Bizzox2" ;;
}
private void checkBox3_CheckedChanged（object sender，EventArgs e）
{
box3 = true;
ret3 =" B-b-b-box3" ;;
}
private void checkBox4_CheckedChanged（object sender，EventArgs e）
{
box4 = true;
ret4 ="哦，这是box4" ;;
}
private void checkBox5_CheckedChanged（object sender，EventArgs e）
{
box5 = true;
ret5 ="这里是numbah 5" ;;
}
private void checkBox6_CheckedChanged（object sender，EventArgs e）
{
box6 = true;
ret6 =" BOXXX 6" ;;
}
private void checkBox7_CheckedChanged（object sender，EventArgs e）
{
box7 = true;
ret7 =" Beeee7teen bomber" ;;
}
}
}

} if (box2 == true) { Console.WriteLine(ret2); } else { Console.WriteLine("B2 off"); } if (box3 == true) { Console.WriteLine(ret3); } else { Console.WriteLine("B3 off"); } if (box4 == true) { Console.WriteLine(ret4); } else { Console.WriteLine("B4 off"); } if (box5 == true) { Console.WriteLine(ret5); } else { Console.WriteLine("B5 off"); } if (box6 == true) { Console.WriteLine(ret6); } else { Console.WriteLine("B6 off"); } if (box7 == true) { Console.WriteLine(ret7); } else { Console.WriteLine("B7 off"); } } private void checkBox1_CheckedChanged(object sender, EventArgs e) { box1 = true; ret1 = "Box1"; } private void checkBox2_CheckedChanged(object sender, EventArgs e) { box2 = true; ret2 = "Bizzox2"; } private void checkBox3_CheckedChanged(object sender, EventArgs e) { box3 = true; ret3 = "B-b-b-box3"; } private void checkBox4_CheckedChanged(object sender, EventArgs e) { box4 = true; ret4 = "Oh this is box4"; } private void checkBox5_CheckedChanged(object sender, EventArgs e) { box5 = true; ret5 = "Here's numbah 5"; } private void checkBox6_CheckedChanged(object sender, EventArgs e) { box6 = true; ret6 = "BOXXX 6"; } private void checkBox7_CheckedChanged(object sender, EventArgs e) { box7 = true; ret7 = "Beeee7teen bomber"; } } }

所以当我运行这个程序，我可以让控制台返回box1的东西，但无论我多少检查或取消选中方框2-7，它们总是显示为"关闭"。 

So when I run this program, I can get the console to return the box1 stuff, but no matter how much I check or uncheck boxes 2-7, they always show up as "off". 

另外，我觉得必须有一个更简单的方法来写出1000 if / else语句。如果你知道，男孩，我很想知道。在这个测试程序中，只有7个复选框，但在我的实际程序中，大约有20个，而且
的数字可能会增长。

Also, I feel like there has got to be an easier way to do this than to write out 1000 if/else statements. If you know it, boy, I'd love to know it. On this test program, there are only 7 checkboxes but on my actual program, there are about 20 and that number may grow.

推荐答案

我需要嵌套这些陈述吗？我不明白为什么我会...嗯，我应该只做一个if语句所有的条件作为条件吗？等等，我不想那样做因为我希望这些是彼此独立的。

Do I need to nest these statements? I don't see why I would... Um, should I just do one if statement with all of the boxes as conditions? Wait, I don't wanna do that because I want these to be independent of each other.

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