¿Qué método en C# puede obtener el nombre de dominio del host?

usando System;

usando System.Collections.Generic;

usando System.Text;

espacio de nombres Tecnología Zhicheng

{

clase SqlLocator

{

[System.Runtime.InteropServices.DllImport("odbc32.dll")]

SQLAllocHandle corto externo estático público (tipo h corto, mango de entrada IntPtr, mango de salida IntPtr);

[System.Runtime.InteropServices.DllImport("odbc32.dll")]

estático público externo corto SQLSetEnvAttr(IntPtr henv, int atributo, IntPtr valuePtr, int strLength);

[System.Runtime.InteropServices.DllImport("odbc32.dll")]

público estático externo short SQLFreeHandle(short hType, identificador IntPtr);

[System.Runtime.InteropServices.DllImport("odbc32.dll", CharSet = System.Runtime.InteropServices.CharSet.Ansi)]

público estático externo short SQLBrowseConnect(IntPtr hconn, System.Text.StringBuilder inString,

short inStringLength, System.Text.StringBuilder outString, short outStringLength,

out short outLengthNeeded);

public const short SQL_HANDLE_ENV = 1;

public const short SQL_HANDLE_DBC = 2

public const int SQL_ATTR_ODBC_VERSION = 200; const int SQL_OV_ODBC3 = 3;

public const short SQL_SUCCESS = 0;

public const short SQL_NEED_DATA = 99;

public const short DEFAULT_RESULT_SIZE = 1024;

public const string SQL_DRIVER_STR = "DRIVER=SQL SERVER";

public SqlLocator() { }

public static string[ ] GetServers()

{

lista de cadenas = string.Empty

IntPtr henv = IntPtr.Zero

IntPtr hconn; IntPtr.Zero;

System.Text.StringBuilder inString = nuevo System.Text.StringBuilder(SQL_DRIVER_STR);

System.Text.StringBuilder outString = nuevo System.Text.StringBuilder(DEFAULT_RESULT_SIZE );

short inStringLength = (short)inString.Length;

short lenNeeded = 0

intentar

{

if (SQL_SUCCESS == SQLAllocHandle(SQL_HANDLE_ENV, henv, out henv))

{

if (SQL_SUCCESS == SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (IntPtr)SQL_OV_ODBC3, 0))

{

if (SQL_SUCCESS == SQLAllocHandle(SQL_HANDLE_DBC, henv, out hconn))

{

if ( SQL_NEED_DATA == SQLBrowseConnect(hconn, inString, inStringLength, outString,

DEFAULT_RESULT_SIZE, out lenNeeded))

{

if (DEFAULT_RESULT_SIZE lt; lenN

eeded)

{

outString.Capacity = lenNeeded;

if (SQL_NEED_DATA != SQLBrowseConnect(hconn, inString, inStringLength, outString,

lenNeeded, out lenNeeded))

{

throw new ApplicationException("No se pueden adquirir servidores SQL desde el controlador ODBC."); p>

}

lista = outString.ToString();

int inicio = lista.IndexOf("{") 1; = list.IndexOf("}") - inicio;

if ((start gt; 0) amp; amp; (len gt; 0))

{

lista = lista.Substring(inicio, len);

}

else

{

lista = cadena.Vacío ;

}

}

}

}

}

}

captura

{

lista = cadena.Empty;

}

finalmente

{

if (hconn != IntPtr.Zero)

{

SQLFreeHandle(SQL_HANDLE_DBC, hconn

}

if (henv != IntPtr.Zero)

{

SQLFreeHandle(SQL_HANDLE_ENV, hconn

}

}

cadena[] matriz = nulo