关于html 字符串的截取

[asp_net_fish]

我想做一个截取html文本段落 截取 <br/> 或者</p> 反正二者之一 一共截取3次 比如：<br/></p><br/> 或 </p><br/></p>
就像博客的截取一部分 显示 然后点击查看全文
我现在只能截取<br/> 但是想截取</p> 确不行

 
public string formathtml(string Htmlstring)
        {
            string replacestring = "<br />|<br>";
            string Htmlstring1 = Regex.Replace(Htmlstring, replacestring, "<br/>");
            //Htmlstring = Regex.Replace(Htmlstring, @"<(/?)p>", "{p}", RegexOptions.IgnoreCase);
            //Htmlstring = Regex.Replace(Htmlstring, @"<br(\s/?)>", "{br}", RegexOptions.IgnoreCase);
            //Htmlstring = Regex.Replace(Htmlstring, @"<img (?<x>[^\>]*)>", "{img $1}", RegexOptions.IgnoreCase);
            //Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
            //Htmlstring = Regex.Replace(Htmlstring, @"{p}", "<p>", RegexOptions.IgnoreCase);
            //Htmlstring = Regex.Replace(Htmlstring, @"{br}", "<br>", RegexOptions.IgnoreCase);
            //Htmlstring = Regex.Replace(Htmlstring, @"{img(?<x>[^\>]*)}", "<img onload=DrawImage(this,50,45) $1>", RegexOptions.IgnoreCase);
            //string htmlcode = GetString("([\\br\\BR]*?)", Htmlstring).Trim();
            Regex r = new Regex("([\\S\\s]*?)<br/>");

            MatchCollection m = r.Matches(Htmlstring1);
            string value = "";
            if (m.Count > 3)
            {
                for (int i = 0; i < 3; i++)
                {
                    value += m[i].Groups[1].Value + "<br/>";
                }
                return value;
            }
            else
            {
                return Htmlstring1;
            }


        }

请大家指点一下

[jfd198512]

顶～ 学习

[chenguang79]

</p>是不是有大小的区分啊

[asp_net_fish]

大小写 无所谓 我可以转的 主要是为了 <br/> 和</p> 条件能共存

[CutBug]

Regex r = new Regex("([\\S\\s]*?)<(br|p)/?>",RegexOptions.IgnoreCase);

[asp_net_fish]

<(br|p)/?> </p> 是这样的格式吧

[Terran5]

正则表达式的问题。

    protected void Page_Load(object sender, EventArgs e)
    {
        string str = " <table><tr><td >11111<br /></td><td><p>123456</p><p>123456</p><p>123456</p><p>123456</p></tr></table>";
        formathtml(str);
    }

    public string formathtml(string Htmlstring)
    {
        string Htmlstring1 = Regex.Replace(Htmlstring, "<p>123456</p>", "<p>1</p>");
        //Htmlstring = Regex.Replace(Htmlstring, @"<(/?)p>", "{p}", RegexOptions.IgnoreCase);
        //Htmlstring = Regex.Replace(Htmlstring, @"<br(\s/?)>", "{br}", RegexOptions.IgnoreCase);
        //Htmlstring = Regex.Replace(Htmlstring, @"<img (?<x>[^\>]*)>", "{img $1}", RegexOptions.IgnoreCase);
        //Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
        //Htmlstring = Regex.Replace(Htmlstring, @"{p}", "<p>", RegexOptions.IgnoreCase);
        //Htmlstring = Regex.Replace(Htmlstring, @"{br}", "<br>", RegexOptions.IgnoreCase);
        //Htmlstring = Regex.Replace(Htmlstring, @"{img(?<x>[^\>]*)}", "<img onload=DrawImage(this,50,45) $1>", RegexOptions.IgnoreCase);
        //string htmlcode = GetString("([\\br\\BR]*?)", Htmlstring).Trim();
        Regex r = new Regex("([\\S\\s]*?)<p>1</p>");

        MatchCollection m = r.Matches(Htmlstring1);
        string value = "";
        if (m.Count > 3)
        {
            for (int i = 0; i < 3; i++)
            {
                value += m[i].Groups[1].Value + "X" + i.ToString();
            }
            return value;
        }
        else
        {
            return Htmlstring1;
        }
    }

[CutBug]

<br/> </p> <br/> 或 </p> <br/> </p>
这是固定的？
比如？
xxxxx<br/> </p> <br/>
xxxxx</p> <br/> </p>
...

[qq2013]

ding

[levinstong]

学习!!!!!!

[mmbf001]

1

[asp_net_fish]

不是固定的 呵呵 我现在只能截取<br/> 把<br> <br /> 转译为<br/>

[youqi6597480]

学习学习

[大神来了丶]

帮顶

[asp_net_fish]

dddddd

[jfd198512]

顶 LZ UP！！！