大家帮我看一下，下面的代码如何实现传送中文？

[fanbl]

为什么下面的代码只能实现英文聊天，如果使用中文则出现乱码？请问大家如何解决？
public class Chat
{
private static IPAddress remoteIPAddress = IPAddress.Parse("127.0.0.1");
private static int remotePort;
private static int localPort;

[STAThread]
static void Main(string[] args)
{
Console.WriteLine("请输入本机端口");
localPort = Convert.ToInt16(Console.ReadLine());
Console.WriteLine("请输入远程端口");
remotePort = Convert.ToInt16(Console.ReadLine());
Thread thread = new Thread(new ThreadStart(Receiver));
thread.Start();
while(true)
{
Send(Console.ReadLine());
}
}
private static void Send(string datagram)
{
UdpClient sender = new UdpClient();
IPEndPoint ipEndPoint = new IPEndPoint(remoteIPAddress,remotePort);
byte[] bytes = Encoding.ASCII.GetBytes(datagram);
sender.Send(bytes,bytes.Length,ipEndPoint);
sender.Close();
}
private static void Receiver()
{
UdpClient receivingUdpClient = new UdpClient(localPort);
IPEndPoint RemoteIPEndPoint = null;
Console.WriteLine("------------------Ready for chat!!!!!----------------------");
while(true)
{
byte[] receiveBytes = receivingUdpClient.Receive(ref RemoteIPEndPoint);
string returnData = Encoding.ASCII.GetString(receiveBytes);
Console.WriteLine("-" + returnData);
}
}



}

[wsh236]

using System;
using System.Text;

namespace ConvertExample
{
class ConvertExampleClass
{
static void Main()
{
string unicodeString = "This string contains the unicode character Pi(\u03a0)";

// Create two different encodings.
Encoding ascii = Encoding.ASCII;
Encoding unicode = Encoding.Unicode;

// Convert the string into a byte[].
byte[] unicodeBytes = unicode.GetBytes(unicodeString);

// Perform the conversion from one encoding to the other.
byte[] asciiBytes = Encoding.Convert(unicode, ascii, unicodeBytes);

// Convert the new byte[] into a char[] and then into a string.
// This is a slightly different approach to converting to illustrate
// the use of GetCharCount/GetChars.
char[] asciiChars = new char[ascii.GetCharCount(asciiBytes, 0, asciiBytes.Length)];
ascii.GetChars(asciiBytes, 0, asciiBytes.Length, asciiChars, 0);
string asciiString = new string(asciiChars);

// Display the strings created before and after the conversion.
Console.WriteLine("Original string: {0}", unicodeString);
Console.WriteLine("Ascii converted string: {0}", asciiString);
}
}
}

[fanbl]

我初学，上面的朋友能帮忙解释一下吗？我看不太明白？

[exboy]

出现乱码一般都编码出现问题了
byte[] bytes = Encoding.BigEndianUnicode.GetBytes(datagram);

[fanbl]

楼上的朋友我这样byte[] bytes = Encoding.BigEndianUnicode.GetBytes(datagram);在接收端还是不能正确显示中文呀？大家帮帮我呀！