C#数字格式化输出

迈不过友情╰ 2022-03-27 10:48 271阅读 0赞

int a = 12345678;  
//格式为sring输出  
Label1.Text = string.Format("asdfadsf\{0\}adsfasdf",a);  
Label2.Text = "asdfadsf"+a.ToString()+"adsfasdf";  
Label1.Text = string.Format("asdfadsf\{0:C\}adsfasdf",a);//asdfadsf￥1,234.00adsfasdf  
Label2.Text = "asdfadsf"+a.ToString("C")+"adsfasdf";//asdfadsf￥1,234.00adsfasdf  
double b = 1234.12543;  
int a = 12345678;  
  
//格式为特殊的string样式输出  
Label1.Text = string.Format("asdfadsf\{0:C\}adsfasdf",b);//asdfadsf￥1,234.13adsfasdf  
Label2.Text = "asdfadsf"+b.ToString("C")+"adsfasdf";//asdfadsf￥1,234.13adsfasdf  
Label1.Text = string.Format("\{0:C3\}",b);//￥1,234.125  
Label2.Text = b.ToString("C3");//￥1,234.125  
Label1.Text = string.Format("\{0:d\}",a);//十进制--12345678  
Label2.Text = b.ToString("d");//十进制--相同的类型，转换报错  
Label1.Text = string.Format("\{0:e\}",a);//指数--1.234568e+007  
Label2.Text = b.ToString("e");//指数--1.234125e+003  
Label1.Text = string.Format("\{0:f\}",a);//定点数--12345678.00  
Label2.Text = b.ToString("f");//定点数--1234.13  
Label1.Text = string.Format("\{0:n\}",a);//数值--12,345,678.00  
Label2.Text = b.ToString("n");//数值--1,234.13  
Label1.Text = string.Format("\{0:x\}",a);//十六进制--bc614e  
Label2.Text = b.ToString("x");//16--带有小数不能转换，出错  
Label1.Text = string.Format("\{0:g\}",a);//通用为最紧凑--12345678  
Label2.Text = b.ToString("g");//通用为最紧凑--1234.12543  
Label1.Text = string.Format("\{0:r\}",a);//转来转去不损失精度--整数不允许用，报错  
Label2.Text = b.ToString("r");//转来转去不损失精度--1234.12543  
  
double b = 4321.12543;  
int a = 1234;  
自定义模式输出：  
  
//"0"描述：占位符，如果可能，填充位  
Label1.Text = string.Format("\{0:000000\}",a);// 001234  
Label2.Text = string.Format("\{0:000000\}",b);// 004321  
  
//"\#"描述：占位符，如果可能，填充位  
Label1.Text = string.Format("\{0:\#\#\#\#\#\#\#\}",a);// 1234  
Label2.Text = string.Format("\{0:\#\#\#\#\#\#\#\}",b);// 4321  
Label1.Text = string.Format("\{0:\#0\#\#\#\#\}",a);// 01234  
Label2.Text = string.Format("\{0:0\#0000\}",b);// 004321  
  
//"."描述：小数点  
Label1.Text = string.Format("\{0:000.000\}",a);//1234.000  
Label2.Text = string.Format("\{0:000.000\}",b);//4321.125  
double b = 87654321.12543;  
int a = 12345678;  
  
//","描述：数字分组，也用于增倍器  
Label1.Text = string.Format("\{0:0,00\}",a);// 12,345,678  
Label2.Text = string.Format("\{0:0,00\}",b);// 87,654,32  
Label1.Text = string.Format("\{0:0,\}",a);// 12346  
Label2.Text = string.Format("\{0:0,\}",b);// 87654  
Label1.Text = string.Format("\{0:0,,\}",a);// 12  
Label2.Text = string.Format("\{0:0,,\}",b);// 88  
Label1.Text = string.Format("\{0:0,,,\}",a);// 0  
Label2.Text = string.Format("\{0:0,,,\}",b);// 0  
  
//"%"描述：格式为百分数  
Label1.Text = string.Format("\{0:0%\}",a);// 1234567800%  
Label2.Text = string.Format("\{0:\#%\}",b);// 8765432113%  
Label1.Text = string.Format("\{0:0.00%\}",a);// 1234567800.00%  
Label2.Text = string.Format("\{0:\#.00%\}",b);// 8765432112.54%  
  
//"abc"描述：显示单引号内的文本  
Label1.Text = string.Format("\{0:'文本'0\}",a);// 文本12345678  
Label2.Text = string.Format("\{0:文本0\}",b);// 文本87654321  
  
//"\\"描述：后跟1要打印字的字符，也用于转移符\\n等  
Label1.Text = string.Format("\\"你好！\\"");// "你好！"  
Label2.Text = string.Format("\[url=file://\\\\c\\\\books\\\\new\\\\we.asp\]\\\\c\\\\books\\\\new\\\\we.asp");//\\c\\books\\new\\we.asp  
  
//"@"描述：后跟要打印字的字符,  
Label1.Text = string.Format(@"""你好！"""); // "你好！"要打印"则需要输入两对才可以  
Label2.Text = string.Format(@"\\c\\books\\new\\we.asp");//\\c\\books\\new\\we.asp