我要评论代码一
/// <summary>
/// 截断字符串
/// </summary>
/// <param name="maxlength">最大长度</param>
/// <param name="str">原字符串</param>
/// <returns></returns>
public static string cutstr(int maxlength, string str)
{
string temp = str;
if (regex.replace(temp, "[\u4e00-\u9fa5]", "zz", regexoptions.ignorecase).length <= maxlength)
{
return temp;
}
for (int i = temp.length; i >= 0; i--)
{
temp = temp.substring(0, i);
if (regex.replace(temp, "[\u4e00-\u9fa5]", "zz", regexoptions.ignorecase).length <= maxlength - 3)
{
return temp + "...";
}
}
return "...";
}
代码二
private string getbytestring(string center, int maxlen, string endstr)
{
string temp = center.substring(0, (center.length < maxlen + 1) ? center.length : maxlen + 1);
byte[] encodedbytes = system.text.asciiencoding.ascii.getbytes(temp);
string outputstr = "";
int count = 0;
for (int i = 0; i < temp.length; i++)
{
if ((int)encodedbytes[i] == 63)
count += 2;
else
count += 1;
if (count <= maxlen - endstr.length)
outputstr += temp.substring(i, 1);
else if (count > maxlen)
break;
}
if (count <= maxlen)
{
outputstr = temp;
endstr = "";
}
outputstr += endstr;
return outputstr;
}
以上就是c# 截取字符串方法（包含中英混合）的实现代码，需要的朋友可以参考一下
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