C#数字格式化方法全面解析

C#数字格式化输出：

int a = 12345678;

C#数字格式化之格式为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;

C#数字格式化之格式为特殊的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;

C#数字格式化之自定义模式输出：

C#数字格式化之"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

C#数字格式化之"#"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

C#数字格式化之"."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;

C#数字格式化之","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

C#数字格式化之"%"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%

C#数字格式化之"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

C#数字格式化之"/"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

C#数字格式化之"@"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