半角和全角互换

由于一些txtbox对应的数据库中字段类型的限制，有时候写了全角字符进去了的话在查询统计的时候就会出问题，所以在存进去或是取出来的时

候最好转换一下。可以选择在存之前将全角转化为半角了再存进去，统计的时候就不会有问题了。

 1半全角互换#region   半全角互换  
 2                  /**////   <summary>  
 3                  ///   转全角的函数(SBC   case)  
 4                  ///   </summary>  
 5                  ///   <param   name="input">任意字符串</param>  
 6                  ///   <returns>全角字符串</returns>  
 7                  ///<remarks>  
 8                  ///全角空格为12288，半角空格为32  
 9                  ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248  
10                  ///</remarks>                  
11                  public   static   string   ToSBC(string   input)  
12                  {  
13                          //半角转全角：  
14                          char[]   c   =   input.ToCharArray();  
15                          for   (int   i   =   0;   i   <   c.Length;   i++)  
16                          {  
17                                  if   (c[i]   ==   32)  
18                                  {  
19                                          c[i]   =   (char)12288;  
20                                          continue;  
21                                  }  
22                                  if   (c[i]   <   127   &&   c[i]   >   32)  
23                                  {  
24                                          c[i]   =   (char)(c[i]   +   65248);  
25                                  }  
26                          }  
27                          return   new   string(c);  
28                  }  
29   
30                  /**////   <summary>  
31                  ///   转半角的函数(DBC   case)  
32                  ///   </summary>  
33                  ///   <param   name="input">任意字符串</param>  
34                  ///   <returns>半角字符串</returns>  
35                  ///<remarks>  
36                  ///全角空格为12288，半角空格为32(此处不必转空格)  
37                  ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248  
38                  ///</remarks>  
39                  public   static   string   ToDBC(string   input)  
40                  {  
41                          char[]   c   =   input.ToCharArray();  
42                          for   (int   i   =   0;   i   <   c.Length;   i++)  
43                          {  
44                                  if   (c[i]   ==   12288)  
45                                  {  
46                                          c[i]   =   (char)32;  
47                                          continue;  
48                                  }  
49                                  if   (c[i]   >   65280   &&   c[i]   <   65375)  
50                                  {  
51                                          c[i]   =   (char)(c[i]   -   65248);  
52                                  }  
53                          }  
54                          return   new   string(c);  
55                  }  
56#endregion