C#字符串与unicode互相转换

/// <summary>
/// 字符串转Unicode
/// </summary>
/// <param name="source">源字符串</param>
/// <returns>Unicode编码后的字符串</returns>
public static string String2Unicode(string source)
{
var bytes = Encoding.Unicode.GetBytes(source);
var stringBuilder = new StringBuilder();
for (var i = 0; i < bytes.Length; i += 2)
{
stringBuilder.AppendFormat("\\u{0:x2}{1:x2}", bytes[i + 1], bytes[i]);
}
return stringBuilder.ToString();
}
/// <summary>
/// 字符串转为UniCode码字符串
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static string StringToUnicode(string s)
{
char[] charbuffers = s.ToCharArray();
byte[] buffer;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < charbuffers.Length; i++)
{
buffer = System.Text.Encoding.Unicode.GetBytes(charbuffers[i].ToString());
sb.Append(String.Format("\\u{0:X2}{1:X2}", buffer[1], buffer[0]));
}
return sb.ToString();
}
/// <summary>
/// Unicode字符串转为正常字符串
/// </summary>
/// <param name="srcText"></param>
/// <returns></returns>
public static string UnicodeToString(string srcText)
{
string dst = "";
string src = srcText;
int len = srcText.Length / 6;
for (int i = 0; i <= len - 1; i++)
{
string str = "";
str = src.Substring(0, 6).Substring(2);
src = src.Substring(6);
byte[] bytes = new byte[2];
bytes[1] = byte.Parse(int.Parse(str.Substring(0, 2), System.Globalization.NumberStyles.HexNumber).ToString());
bytes[0] = byte.Parse(int.Parse(str.Substring(2, 2), System.Globalization.NumberStyles.HexNumber).ToString());
dst += Encoding.Unicode.GetString(bytes);
}
return dst;
}