.net unicode 中文

在线直接转换工具 http://tool.sufeinet.com/Code/ChineseUnicode.aspx

//可以包括其他字符         
public string uncode(string str)  
{  
    string outStr = "";  
    Regex reg = new Regex(@"(?i)//u([0-9a-f]{4})");  
    outStr = reg.Replace(str, delegate(Match m1)  
    {  
        return ((char)Convert.ToInt32(m1.Groups[1].Value, 16)).ToString();  
    });  
    return outStr;  
}  

//中文转为UNICODE字符  

string str = "中文";  
string outStr = "";  
if (!string.IsNullOrEmpty(str))  
{                  
    for (int i = 0; i < str.Length; i++)  
    {  
        //将中文字符转为10进制整数，然后转为16进制unicode字符  
        outStr += "//u" + ((int)str[i]).ToString("x");  
    }  
}  

//UNICODE字符转为中文  

string str = "//u4e2d//u6587";  
string outStr = "";  
if (!string.IsNullOrEmpty(str))  
{  
    string[] strlist = str.Replace("//","").Split('u');  
    try  
    {  
        for (int i = 1; i < strlist.Length; i++)  
        {  
            //将unicode字符转为10进制整数，然后转为char中文字符  
            outStr += (char)int.Parse(strlist[i], System.Globalization.NumberStyles.HexNumber);  
        }  
    }  
    catch (FormatException ex)  
    {  
        outStr = ex.Message;  
    }  
}  

http://blog.csdn.net/liehuo123/article/details/6055285