C#字符串截取(区分汉字)(转)

/// <summary>
/// 截取字符串
/// </summary>
/// <param name="inputString">原始字符串</param>
/// <param name="length">截取长度</param>
/// <returns>截取后的字符串</returns>
public static string SubString(string inputString, int length)
{
    if(Encoding.UTF8.GetByteCount(inputString)<=length*2)
     {
    return inputString;
     }
     ASCIIEncoding ascii = new ASCIIEncoding();
    int tempLen = 0;
    string tempString = "";
    byte[] s = ascii.GetBytes(inputString);
    for (int i = 0; i < s.Length; i++)
     {
    if ((int)s[i] == 63)
     {
         tempLen += 2;
     }
    else
     {
         tempLen += 1;
     }
     tempString += inputString.Substring(i, 1);
    if (tempLen >= (length-1)*2)
        break;
     }
    //如果截过则加上半个省略号
    if (System.Text.Encoding.Default.GetBytes(inputString).Length > length)
     tempString += "..";
    return tempString;
}

可不要忘记导入System.Text命名空间哦

适合 asp.net ,c# ,Wpf.