我是Html Agility Pack和Xpath的新手。我的表格部分是：
...
<tbody class="tdata">
<tr bgcolor="#ffffff">
<td nowrap>CRR004</td>
<td nowrap>Carrie</td>
<td nowrap>021</td>
<td nowrap>COAL</td>
<td nowrap>0.800</td>
<td nowrap>55.000</td>
<td nowrap>55.800</td>
<td nowrap>FCR A</td>
<td nowrap> </td>
<td nowrap> </td>
<td nowrap> </td>
</tr></tbody>
...
<tbody class="tdata">
<tr bgcolor="#ffffff">
<td nowrap>CRR004</td>
<td nowrap>Carrie</td>
<td nowrap>021</td>
<td nowrap>COAL</td>
<td nowrap>0.800</td>
<td nowrap>99.500</td>
<td nowrap>100.300</td>
<td nowrap>FCL B</td>
<td nowrap> </td>
<td nowrap> </td>
<td nowrap> </td>
</tr></tbody>
<tbody class="tdata">
<tr bgcolor="#ffffff">
<td nowrap>CRR004</td>
<td nowrap>Carrie</td>
<td nowrap>034</td>
<td nowrap>BONE</td>
<td nowrap>0.100</td>
<td nowrap>100.300</td>
<td nowrap>100.400</td>
<td nowrap>FCL B</td>
<td nowrap> </td>
<td nowrap> </td>
<td nowrap> </td>
</tr></tbody>
<tbody class="tdata">
<tr bgcolor="#ffffff">
<td nowrap>CRR004</td>
<td nowrap>Carrie</td>
<td nowrap>021</td>
<td nowrap>COAL</td>
<td nowrap>0.400</td>
<td nowrap>100.400</td>
<td nowrap>100.800</td>
<td nowrap>FCL B</td>
<td nowrap> </td>
<td nowrap> </td>
<td nowrap> </td>
</tr></tbody>
使用Html Agility Pack，我可以使用以下内容获取整个表格。
doc.DocumentNode.SelectNodes("//tbody[@class='tdata']/tr")
但我只想从第8列包含“FCR A”的行中选择包含“FCL B”的最后一行。那是从第2行到第14行。
CRR004 Carrie 540 SS 1.100 53.900 55.000
CRR004 Carrie 021 COAL 0.800 55.000 55.800 FCR A
CRR004 Carrie 124 SH 4.200 55.800 60.000
CRR004 Carrie 320 S SH 1.400 60.000 61.400
CRR004 Carrie 540 SS 2.400 61.400 63.800
CRR004 Carrie 320 S SH 0.300 63.800 64.100
CRR004 Carrie 540 SS 15.900 64.100 80.000
CRR004 Carrie 749 SS W/COAL STR 10.000 80.000 90.000
CRR004 Carrie 540 SS 7.200 90.000 97.200
CRR004 Carrie 124 SH 0.500 97.200 97.700
CRR004 Carrie 114 BLACK SH 1.800 97.700 99.500
CRR004 Carrie 021 COAL 0.800 99.500 100.300 FCL B
CRR004 Carrie 034 BONE 0.100 100.300 100.400 FCL B
CRR004 Carrie 021 COAL 0.400 100.400 100.800 FCL B
CRR004 Carrie 120 CL SH 0.800 100.800 101.600
我试过doc.DocumentNode.SelectNodes("//tbody[@class='tdata']/tr[following-sibling::td[8]='FCR A' and preceding-sibling::td[8]='FCL B']"))等无济于事。任何帮助将非常感谢。感谢。
答案 0 :(得分：0)
在使用Splash的建议后，这有效：
//tr[contains(.,'FCR A')]|//tr[following::tr[td[8][.= 'FCL B']][last()] and preceding::tr[td[8][.= 'FCR A']][last()]]|//tr[contains(.,'FCL B')]
但也可以欣赏一个较短的表达方式。