Asp.net中的页面乱码的问题

1.<globalization

  requestEncoding="gb2312"

  responseEncoding="gb2312"

  />

  或者

  <META http-equiv="content-type" content="text/html; charset=gb2312">

  

  2.下载文件时指定文件名,中文的文件名出现了乱码?

  Response.AddHeader("Content-Disposition", "attachment; filename="+HttpUtility.UrlEncoding(filename.ToString ()));

  

  3.如何识别字符串中是否包含韩文

  http://search.csdn.net/Expert/topic/2456/2456407.xml?temp=.5485498

  如果只有英文和韩文

  /*******该函数返回字符串中除英文外的字符*********/

  create function test(@a varchar(20))

  returns varchar(20)

  as

  begin

  declare @b varchar(20),@i int

  set @b = ''

  set @i = 1

  while @i<= len(@a)

  begin

  if Upper(substring(@a,@i,1)) not between 'A' and 'Z'

  set @b = @b + substring(@a,@i,1)

  set @i = @i+1

  end

  return @b

  end

  Select dbo.test('aabc12dsa451')

  --------------------

  12451

  (所影响的行数为 1 行)

  --1.有关多国文字的,一定要用UNICODE判断!

  --2.韩文UNICODE分两断: 12592->12687 44032->55203

  相关网站:http://www.buja.8u8.com/eeeeee.htm

  create function hw(@str Nvarchar(100))

  returns int

  as

  begin

  declare @a int

  set @a=0

  while @str<>'' and @a=0

  begin

  set @a=(case when unicode(left(@str,1)) between 12592 and 12687

  or unicode(left(@str,1)) between 44032 and 55203

  then 1

  else 0 end)

  set @str=right(@str,len(@str)-1)

  end

  return @a

  end

  --调用:

  declare @a nvarchar(100)

  set @a=N'abc中갃国123'

  select dbo.hw(@a)

  --return: 1

  set @a=N'abc中国123'

  select dbo.hw(@a)

  --return: 0

  

  4.为什么文件读出来的中文字符是乱码?

  System.IO.StreamReader m_fs = System.IO.File.OpenText(Hfile_SelectFile.Value);

  改为

  System.IO.StreamReader m_fs = new System.IO.StreamReader(Hfile_SelectFile.Value,System.Text.Encoding.GetEncoding("gb2312"));

  

  5.JMAIL 发邮件附件或者没有或者在正文中是乱码

  http://community.csdn.net/Expert/topic/3172/3172047.xml?temp=.3463404

  6.怎么解决查询字符串中文乱码问题?

  查询内容用Server.UrlEncode编码

  string url ="http://localhost/test/test.aspx?a="+ Server.UrlEncode("张三");

  解

  -->Server.UrlDecode()