Obtain the first letter of Chinese pinyin (C #) based on the location #)

Using system;
Using system. text;

Namespace code
{
/// <Summary>
/// Summary of searchcode.
/// </Summary>
Public class searchcode
{
Public searchcode ()
{
//
// Todo: add the constructor logic here
//
}
/// <Summary>
/// Returns the first letter of a given string.
/// </Summary>
/// <Param name = "indextxt"> string </param>
/// <Returns> </returns>
Public String indexcode (string indextxt)
{
String _ temp = NULL;
For (INT I = 0; I <indextxt. length; I ++)
_ Temp = _ temp + getoneindex (indextxt. substring (I, 1 ));
Return _ temp;
}

/// <Summary>
/// Returns the first letter of the given string
/// </Summary>
/// <Param name = "str"> string </param>
/// <Returns> </returns>
Public String oneindexcode (string Str)
{
Return getoneindex (Str. substring (0, 1 ));
}

// Obtain the first letter of a single character
Private string getoneindex (string oneindextxt)
{
If (convert. tochar (oneindextxt)> = 0 & convert. tochar (oneindextxt) <256)
Return oneindextxt. toupper ();
Else
{
Encoding gb2312 = encoding. getencoding ("gb2312 ");
Byte [] unicodebytes = encoding. Unicode. getbytes (oneindextxt );
Byte [] gb2312bytes = encoding. Convert (encoding. Unicode, gb2312, unicodebytes );
Try
{
Return getx (convert. toint32 (
String. Format ("{0: D2}", convert. toint16 (gb2312bytes [0])-160)
+ String. Format ("{0: D2}", convert. toint16 (gb2312bytes [1])-160)
));
}
Catch (exception ex)
{
Return "";
}
}

}

/// <Summary>
/// Obtain the first letter of a Chinese character based on the location
/// </Summary>
/// <Param name = "gbcode"> Location Code </param>
/// <Returns> </returns>
Private string getx (INT gbcode)
{
If (gbcode> = 1601 & gbcode <1637) Return "";
If (gbcode> = 1637 & gbcode <1833) Return "B ";
If (gbcode> = 1833 & gbcode <2078) Return "C ";
If (gbcode> = 2078 & gbcode <2274) Return "D ";
If (gbcode> = 2274 & gbcode <2302) Return "E ";
If (gbcode> = 2302 & gbcode <2433) Return "F ";
If (gbcode> = 2433 & gbcode <2594) Return "G ";
If (gbcode> = 2594 & gbcode <2787) Return "H ";
If (gbcode> = 2787 & gbcode <3106) Return "J ";
If (gbcode> = 3106 & gbcode <3212) Return "K ";
If (gbcode> = 3212 & gbcode <3472) Return "L ";
If (gbcode> = 3472 & gbcode <3635) Return "M ";
If (gbcode> = 3635 & gbcode <3722) Return "N ";
If (gbcode> = 3722 & gbcode <3730) Return "O ";
If (gbcode> = 3730 & gbcode <3858) Return "p ";
If (gbcode> = 3858 & gbcode <4027) Return "Q ";
If (gbcode> = 4027 & gbcode <4086) Return "R ";
If (gbcode> = 4086 & gbcode <4390) Return "S ";
If (gbcode> = 4390 & gbcode <4558) Return "T ";
If (gbcode> = 4558 & gbcode <4684) Return "W ";
If (gbcode> = 4684 & gbcode <4925) Return "X ";
If (gbcode> = 4925 & gbcode <5249) Return "Y ";
If (gbcode> = 5249 & gbcode <= 5589) Return "Z ";
If (gbcode> = 5601 & gbcode <= 8794)
{
String codedata = "success"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Alarm"
+ "Success ";
String _ gbcode = gbcode. tostring ();
Int Pos = (convert. toint16 (_ gbcode. substring (0, 2)-56) * 94 + convert. toint16 (_ gbcode. substring (_ gbcode. length-2, 2 ));
Return codedata. substring (pos-1, 1 );
}
Return "";
}

}
}