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/// <summary>
/// 截取文本,区分中英文字符,中文算两个长度,英文算一个长度
/// </summary>
/// <param name="str">待截取的字符串</param>
/// <param name="length">需计算长度的字符串</param>
/// <returns>string</returns>
public static string GetSubString(string str, int length)
{
string temp = str;
int j = 0;
int k = 0;
for (int i = 0; i < temp.Length; i++)
{
if (Regex.IsMatch(temp.Substring(i, 1), @"[\u4e00-\u9fa5]+"))
{
j += 2;
}
else
{
j += 1;
}
if (j <= length)
{
k += 1;
}
if (j > length)
{
return temp.Substring(0, k) + "...";
}
}
return temp;
}
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原文地址:http://www.cnblogs.com/602147629/p/5462625.html