你所在位置:首页C#.net开发 → C#String.PadLeft函数,文本对齐以及填补解决方案

C#String.PadLeft函数,文本对齐以及填补解决方案

发布时间:2019-05-15

由于很多时候我们需要把数据进行格式化,方便各个之间通信和数据交互,因此难免会经常让人位数不够而进行位数相应数据填充。比如,你希望获取的是7位的2进制数据格式,而2进制数据格式,都是以0,1都为数据信号的,只有1,0两数据格式,刚我说的是7位,相当于如下:1000101格式,如果,我的数据是101三个长度的2进制数据,但我想返回一个新的并且具有固定长度,位数不够填充0的做法。

string SourceStr="101";

string DestinationStr;

DestinationStr=String.PadLeft(7,"0");

Console.Write(DestinationStr);

以上代码就会输出:0000101

现在解析此函数,此函数有2个重载版本。

重载1:public string PadLeft(int totalWidth);

重载2public string PadLeft(int totalWidth, char paddingChar);

关于重载1慕馐停⑷淼淖⑹臀这个默认是以空格进行左边填充,保持右边对齐。)

//
   
// Summary:
   
//
     Right-aligns the characters in this instance, padding with spaces on the
   
//
     left for a specified total length.
   
//

   
// Parameters:
   
//
   totalWidth:
   
//
     The number of characters in the resulting string, equal to the number of
   
//
     original characters plus any additional padding characters.
   
//

   
// Returns:
   
//
     A new System.String that is equivalent to this instance, but right-aligned
   
//
     and padded on the left with as many spaces as needed to create a length of
   
//
     totalWidth. Or, if totalWidth is less than the length of this instance, a
   
//
     new System.String object that is identical to this instance.
   
//

   
// Exceptions:
   
//
   System.ArgumentOutOfRangeException:
   
//     totalWidth is less than zero.

    public string PadLeft(int totalWidth);

而重载2的注释为:(可以根据自己想要填充的字符进行填充,对齐是字符串右对齐。)

 

\代码

//
// Summary:
// Right-aligns the characters in this instance, padding on the left with a
// specified Unicode character for a specified total length.
//
// Parameters:
// totalWidth:
// The number of characters in the resulting string, equal to the number of
// original characters plus any additional padding characters.
//
// paddingChar:
// A Unicode padding character.
//
// Returns:
// A new System.String that is equivalent to this instance, but right-aligned
// and padded on the left with as many paddingChar characters as needed to create
// a length of totalWidth. Or, if totalWidth is less than the length of this
// instance, a new System.String that is identical to this instance.
//


上一篇:Visual C#常用函数和方法集汇总
下一篇:.NET 中的 常量字段const