将汉字转化为2位大写的16进制Unicode

publicstaticstring StringToUnicode16(string text, string prefixalChar, string splitChar)
{
var sb =new StringBuilder();
if (string.IsNullOrEmpty(text))
{
returnstring.Empty;
}

foreach (var t in text)
{
var by = Encoding.Unicode.GetBytes(Convert.ToString(t));

if (by.Length !=2)
{
sb.Append(Convert.ToString(t));
continue;
}

//只处理中文
if (by[1] ==0)
{
sb.Append(Convert.ToString(t));
continue;
}

sb.Append(prefixalChar);
sb.Append(by[1].ToString("X2"));
sb.Append(by[0].ToString("X2"));
sb.Append(splitChar);
}

return sb.ToString();
}