C # code for converting big5 traditional to simplified gb2312

Using system;
Using system. IO;
Using system. text;
Using system. runtime. interopservices;
// Big5 simplified Conversion Program
Public class encodetool
{
 
[Dllimport ("kernel32.dll", entrypoint = "lcmapstringa")]
Public static extern int lcmapstring (INT locale, int dwmapflags, byte [] lpsrcstr, int cchsrc, byte [] lpdeststr, int cchdest );

Const int lcmap_simplified_chinese = 0x02000000;
Const int lcmap_traditional_chinese = 0x04000000;

Public static void main (string [] ARGs)
{
If (ARGs. Length <1)
{
Console. writeline ("Please specify the path! ");
}
String [] files = directory. getfiles (ARGs [0]);
If (ARGs. Length = 2)
Files = directory. getfiles (ARGs [0], argS [1]);
String dir = ARGs [0] + "\ Conv ";
If (! Directory. exists (DIR )){
Directory. createdirectory (DIR );
}
For (INT I = 0; I streamreader sr = new streamreader (files [I], encoding. getencoding ("big5 "));
String lines = Sr. readtoend ();
Sr. Close ();
Lines = convertstring (lines );
// Console. writeline (lines );
Streamwriter Sw = new streamwriter (DIR + "\" + files [I], false, encoding. getencoding ("gb2312 "));
Sw. writeline (lines );
Sw. Close ();
Console. writeline ("Convert {0} OK! ", Files [I]);
}
}

Public static string convertstring (string lines ){
Encoding gb2312 = encoding. getencoding (936 );
Byte [] src = gb2312.getbytes (lines );
Byte [] DEST = new byte [SRC. Length];
Lcmapstring (0x0804, lcmap_simplified_chinese, SRC,-1, DEST, SRC. Length );
Return gb2312.getstring (DEST );
}
}