绑定的数据过多，把过多的数据隐藏用.....代替-优快云博客

本文介绍了一个C#类，用于去除字符串中的HTML标签并从中截取指定长度的子字符串。该类提供了多种方法来处理字符串，如去除HTML标签、获取指定长度的子字符串等。

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-----后台代码------

/// <summary>
///GetSubString 的摘要说明
/// </summary>
public class GetSub
{
    /// <summary>
    /// 去除HTML标记
    /// </summary>
    /// <param name="Htmlstring"></param>
    /// <returns></returns>
    public static string NoHTML(string Htmlstring)
    {
        if (Htmlstring.IndexOf(@"<") > -1)
        {
            Htmlstring = HttpContext.Current.Server.HtmlDecode(Htmlstring);

            if (Htmlstring.IndexOf(@"&") > -1)
                Htmlstring = HttpContext.Current.Server.HtmlDecode(Htmlstring);
        }

//删除脚本
        Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
        //删除HTML
        Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"-->", "", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);

        Htmlstring = Regex.Replace(Htmlstring, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(nbsp|#160);", " ", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);
        Htmlstring = Regex.Replace(Htmlstring, @"&#(\d+);", "", RegexOptions.IgnoreCase);

        Htmlstring.Replace("<", "");
        Htmlstring.Replace(">", "");
        Htmlstring.Replace("\r\n", "");
        Htmlstring = HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();

return Htmlstring;
}

    public static string GetSubString(object obj, int length, bool showOrNot)
    {
        return GetSubString(obj, length, true, showOrNot);
    }
    public static string GetSubString(object obj, int length, bool showEllipsis, bool showOrNot)
    {
        if (obj != null && !string.IsNullOrEmpty(obj.ToString()))
        {
            return GetSubString(obj.ToString(), length, showEllipsis, showOrNot);
        }

        return string.Empty;
    }
    public static string GetSubString(string str, int length, bool showOrNot)
    {
        return GetSubString(str, length, true, showOrNot);
    }
    public static string GetSubString(string str, int length, bool showEllipsis, bool showOrNot)
    {
        //string temp = BuildHtml.Utility.WebUtil.NoHTML(str);
        string temp = NoHTML(str);
        if (temp.Length > length)
        {
            if (showEllipsis)
            {
                if (showOrNot == true)
                {
                    return temp.Substring(0, length);
                }
                else
                {
                    return temp.Substring(0, length) + "...";
                }

            }
            else
            {
                return temp.Substring(0, length);
            }
        }
        else
            return temp;
    }

}

-----前台------

<%# GetSub.GetSubString(Eval("desc"),70,true,false) %>

转载于:https://www.cnblogs.com/xuebingz/archive/2011/04/20/2021981.html