C#及正则表达式截取HTML代码

Question

有如下HTML代码，请问用C#和正则表达式如何截取？
1.以下html表示收到的3个组的信息，如果含有"unread.gif"表示未读消息，否则表示已读信息。
2.截取未读消息和已读消息的条数和theUrl
3.要将未读信息和已读信息分开放入两个组里。

<div class="dxx_of" id="message1" onmouseover="msgOnmouseover(1)" onmouseout="msgOnmouseout(1)" />
<div class="dxx1" style="padding:15px 10px;"><img src="http://www.microsoft.com/i2/unread.gif" width="14" height="10" title="" /></div>
<div class="dxx2">
				
				<table class="aa" border="0" cellpadding="0" cellspacing="0" >
  					<colgroup>
						<col width="463" />
					</colgroup>
  					<tbody>
  						
    					<tr basestyle="oRowLine2">
      						<td valign="top" onclick="javascript:document.location='thUrl';" >
								wa
								<div><span class='c9'>共6条会话</span><a href="thUrl" class="sl">+展开</a></span></div>
								<span class="c9"></span>
							</td>
						</tr>
					</tbody>
				</table>
</div>
<div class="c"></div>
</div>

<div class="dxx_of" id="message2" onmouseover="msgOnmouseover(2)" onmouseout="msgOnmouseout(2)" />
<div class="dxx1" style="padding:15px 10px;"></div>
<div class="dxx2">		
				<table class="aa" border="0" cellpadding="0" cellspacing="0" >
  					<colgroup>
						<col width="463" />
					</colgroup>
  					<tbody>
  						
    					<tr basestyle="oRowLine2">
      						<td valign="top" onclick="javascript:document.location='thUrl';" >
								wa
								<div><span class='c9'>共3条会话</span><a href="thUrl1" class="sl">+展开</a></span></div>
								<span class="c9"></span>
							</td>
						</tr>
					</tbody>
				</table>				
</div>
<div class="c"></div>
</div>

<div class="dxx_of" id="message3" onmouseover="msgOnmouseover(3)" onmouseout="msgOnmouseout(3)" />
				<div class="dxx1" style="padding:15px 10px;"></div>
<div class="dxx2">
  同上很多html内容
</div>
<div class="c"></div>
</div>

Answer 1

您好，请参考：http://msdn.microsoft.com/zh-cn/library/ms228595.aspx

Answer 2

您好，请参考：http://msdn.microsoft.com/zh-cn/library/ms228595.aspx

我使用以下代码来匹配无效。后来查了一下原来正则的"."只能匹配不含\n的任何字符，但是HTML代码中有很多\r\n
不知有啥好的方法，有效的将其分为3个组？

 Regex regex = new Regex("<div class=\"dxx_of\" id=\".+/>.+(?<htmlCode>.+).+<div class=\"c\"></div>");
 MatchCollection matchs = regex.Matches(resultHtml);

 if(maths.Count>0)
    strig html = matchs[0].Groups["htmlCode"].Value;

 

Answer 3

你可以去正则表达式论坛 提问。

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Visual C++ MVP

Answer 4

你可以去正则表达式论坛 提问。

---

---

Please mark the post answered your question as the answer, and click the chartreuse pyramid floating over "Vote as helpful" to mark other helpful posts as helpful. This posting is provided "AS IS" with no warranties, and confers no rights.
Visual C++ MVP

偶的个神呢。要问英文啊。。。

Answer 5

您好，请参考：http://msdn.microsoft.com/zh-cn/library/ms228595.aspx

我使用以下代码来匹配无效。后来查了一下原来正则的"."只能匹配不含\n的任何字符，但是HTML代码中有很多\r\n
不知有啥好的方法，有效的将其分为3个组？

 Regex regex = new Regex("<div class=\"dxx_of\" id=\".+/>.+(?<htmlCode>.+).+<div class=\"c\"></div>");

 MatchCollection matchs = regex.Matches(resultHtml);



 if(maths.Count>0)

    strig html = matchs[0].Groups["htmlCode"].Value;

 

您好，\r\n在您的需求中不起决定作用。
个人建议可以在正则匹配前 用string Replace方法将 \r\n替换掉。

Answer 6

有如下HTML代码，请问用C#和正则表达式如何截取？
1.以下html表示收到的3个组的信息，如果含有"unread.gif"表示未读消息，否则表示已读信息。
2.截取未读消息和已读消息的条数和theUrl
3.要将未读信息和已读信息分开放入两个组里。

<div class="dxx_of" id="message1" onmouseover="msgOnmouseover(1)" onmouseout="msgOnmouseout(1)" />

<div class="dxx1" style="padding:15px 10px;"><img src="http://www.microsoft.com/i2/unread.gif" width="14" height="10" title="" /></div>

<div class="dxx2">

				

				<table class="aa" border="0" cellpadding="0" cellspacing="0" >

  					<colgroup>

						<col width="463" />

					</colgroup>

  					<tbody>

  						

    					<tr basestyle="oRowLine2">

      						<td valign="top" onclick="javascript:document.location='thUrl';" >

								wa

								<div><span class='c9'>共6条会话</span><a href="thUrl" class="sl">+展开</a></span></div>

								<span class="c9"></span>

							</td>

						</tr>

					</tbody>

				</table>

</div>

<div class="c"></div>

</div>



<div class="dxx_of" id="message2" onmouseover="msgOnmouseover(2)" onmouseout="msgOnmouseout(2)" />

<div class="dxx1" style="padding:15px 10px;"></div>

<div class="dxx2">		

				<table class="aa" border="0" cellpadding="0" cellspacing="0" >

  					<colgroup>

						<col width="463" />

					</colgroup>

  					<tbody>

  						

    					<tr basestyle="oRowLine2">

      						<td valign="top" onclick="javascript:document.location='thUrl';" >

								wa

								<div><span class='c9'>共3条会话</span><a href="thUrl1" class="sl">+展开</a></span></div>

								<span class="c9"></span>

							</td>

						</tr>

					</tbody>

				</table>				

</div>

<div class="c"></div>

</div>



<div class="dxx_of" id="message3" onmouseover="msgOnmouseover(3)" onmouseout="msgOnmouseout(3)" />

				<div class="dxx1" style="padding:15px 10px;"></div>

<div class="dxx2">

  同上很多html内容

</div>

<div class="c"></div>

</div>

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A

Answer 7

有如下HTML代码，请问用C#和正则表达式如何截取？
1.以下html表示收到的3个组的信息，如果含有"unread.gif"表示未读消息，否则表示已读信息。
2.截取未读消息和已读消息的条数和theUrl
3.要将未读信息和已读信息分开放入两个组里。

<
div
 class
=
"dxx_of"
 id
=
"message1"
 onmouseover
=
"msgOnmouseover(1)"
 onmouseout
=
"msgOnmouseout(1)"
 />


<
div
 class
=
"dxx1"
 style
=
"padding:15px 10px;"
>
<
img
 src
=
"http://www.microsoft.com/i2/unread.gif"
 width
=
"14"
 height
=
"10" title=""
 />
</
div
>


<
div
 class
=
"dxx2"
>


				

				<
table
 class
=
"aa"
 border
=
"0"
 cellpadding
=
"0"
 cellspacing
=
"0"
 >


  					<
colgroup
>


						<
col
 width
=
"463"
 />


					</
colgroup
>


  					<
tbody
>


  						

    					<
tr
 basestyle
=
"oRowLine2"
>


      						<
td
 valign
=
"top"
 onclick
=
"javascript:document.location='thUrl';"
 >


								wa

								<
div
>
<
span
 class
=
'c9'
>
共6条会话</
span
>
<
a
 href
=
"thUrl"
 class
=
"sl"
>
+展开</
a
>
</
span
>
</
div
>


								<
span
 class
=
"c9"
>
</
span
>


							</
td
>


						</
tr
>


					</
tbody
>


				</
table
>


</
div
>


<
div
 class
=
"c"
>
</
div
>


</
div
>




<
div
 class
=
"dxx_of"
 id
=
"message2"
 onmouseover
=
"msgOnmouseover(2)"
 onmouseout
=
"msgOnmouseout(2)"
 />


<
div
 class
=
"dxx1"
 style
=
"padding:15px 10px;"
>
</
div
>


<
div
 class
=
"dxx2"
>
		

				<
table
 class
=
"aa"
 border
=
"0"
 cellpadding
=
"0"
 cellspacing
=
"0"
 >


  					<
colgroup
>


						<
col
 width
=
"463"
 />


					</
colgroup
>


  					<
tbody
>


  						

    					<
tr
 basestyle
=
"oRowLine2"
>


      						<
td
 valign
=
"top"
 onclick
=
"javascript:document.location='thUrl';"
 >


								wa

								<
div
>
<
span
 class
=
'c9'
>
共3条会话</
span
>
<
a
 href
=
"thUrl1"
 class
=
"sl"
>
+展开</
a
>
</
span
>
</
div
>


								<
span
 class
=
"c9"
>
</
span
>


							</
td
>


						</
tr
>


					</
tbody
>


				</
table
>
				

</
div
>


<
div
 class
=
"c"
>
</
div
>


</
div
>




<
div
 class
=
"dxx_of"
 id
=
"message3"
 onmouseover
=
"msgOnmouseover(3)"
 onmouseout
=
"msgOnmouseout(3)"
 />


				<
div
 class
=
"dxx1"
 style
=
"padding:15px 10px;"
>
</
div
>


<
div
 class
=
"dxx2"
>


  同上很多html内容

</
div
>


<
div
 class
=
"c"
>
</
div
>


</
div
>

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A

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