问下这段程序的详细的解释 英文解释

来源：蜘蛛抓取(WebSpider) 时间：2014-10-21 12:39 标签： 执行程序若干问题解释
【问题】谁能帮我解释这一段代码，越详细越好_c#吧_百度贴吧
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【问题】谁能帮我解释这一段代码，越详细越好收藏
欢迎前来解释，越详细越好
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代码如下：
public partial class Form1 : Form
public Form1()
InitializeComponent();
private void button1_Click(object sender, EventArgs e)
char ch1, ch2;
ch1 = char.Parse(textBox1.Text);
catch (System.FormatException)
MessageBox.Show("只能输入一个字符，请更正!");
if (char.IsLetter(ch1))
temp = ch1;
if (temp &= 97)
ch2 = (char)(temp - 32);
textBox2.Text = ch2.ToString();
MessageBox.Show("你输入的不是字母字符，请输入字母字符");
F12自己不会看下
干嘛不用现成的方法ToUpper 转大写ToLower 小写
转换大小写
字母可以隐式转换对应的ASK码表数字比如小写a=97，大写A=65，所以根据这个差就可以求出对应大写
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nginx error!
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Website Administrator
Something has triggered an error on your
This is the default error page for
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It is located
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You should customize this error page for your own
site or edit the error_page directive in
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/etc/nginx/nginx.conf.问下程序修改题，c语言题目，求答案，急求_百度知道网页设计涉及到的代码问题（下面这段代码是什么意思，谁能帮我详解一下）_百度知道The page is temporarily unavailable
nginx error!
The page you are looking for is temporarily unavailable.
Please try again later.
Website Administrator
Something has triggered an error on your
This is the default error page for
nginx that is distributed with
It is located
/usr/share/nginx/html/50x.html
You should customize this error page for your own
site or edit the error_page directive in
the nginx configuration file
/etc/nginx/nginx.conf.

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