如何在XSLT中按标记名检索兄弟姐妹?

我有以下问题,我需要每个促销员的ID:

以下是我的XML:

 <Promotions>
      <Promotion>
        <Category>Arts &amp; Entertainment</Category>
        <Client>Client 1</Client>
        <ID>2</ID>
        <Title>Get your Free 2</Title>
      </Promotion>
      <Promotion>
        <Category>Client 1</Category>
        <Client>Artsquest</Client>
        <ID>4</ID>
        <Title>Get your Free 4</Title>
      </Promotion>
      <Promotion>
        <Category>Client 1</Category>
        <Client>Artsquest</Client>
        <ID>5</ID>
        <Title>Get your Free 5</Title>
      </Promotion>
      <Promotion>
        <Category>Community &amp; Neighborhood</Category>
        <Client>Client 2</Client>
        <ID>1</ID>
        <Title>Get your Free 1</Title>
      </Promotion>
      <Promotion>
        <Category>Education</Category>
        <Client>Client 3</Client>
        <ID>3</ID>
        <Title>Get Your Free 3</Title>
      </Promotion>
      <Promotion>
        <Category>Home &amp; Garden</Category>
        <Client>Client 4</Client>
        <ID>6</ID>
        <Title>Get your Free 6</Title>
      </Promotion>
    </Promotions>

这是我的XSLT文件:

 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:asp="remove"> 


      <xsl:output method="html" indent="yes" /> 

      <xsl:key name="categories" match="Category" use="." /> 
      <xsl:key name="client" match="Client" use="." /> 
      <xsl:key name="title" match="Title" use="." /> 

      <xsl:template match="/"> 
        <ul id="red" class="treeview-red"> 
          <xsl:for-each select="/Promotions/Promotion/Category[  
                    generate-id(.) = generate-id(key('categories', .)[1])  
                    ]">
          <li>
        <span>
          <xsl:value-of select="."/> 
        </span>

        <ul> 
          <xsl:call-template name="category-client"> 
            <xsl:with-param name="category" select="."/> 
          </xsl:call-template> 
        </ul>
      </li>

          </xsl:for-each>
        </ul>
      </xsl:template> 

      <xsl:template name="category-client"> 
        <xsl:param name="category" /> 
        <xsl:for-each select="/Promotions/Promotion[Category=$category]/Client[  
                    generate-id(.) = generate-id(key('client', .)[1]) 
                    ]">
          <li>
            <span>
              <xsl:value-of select="."/>
            </span>
            <ul>
              <xsl:call-template name="category-client-title">
                <xsl:with-param name="category" select="$category"/>
                <xsl:with-param name="client" select="."/>
              </xsl:call-template>
            </ul>
          </li>
        </xsl:for-each> 
      </xsl:template> 

      <xsl:template name="category-client-title"> 
        <xsl:param name="category" /> 
        <xsl:param name="client" /> 
        <xsl:for-each select="/Promotions/Promotion[Category=$category]/Title[  
                    generate-id(.) = generate-id(key('title', .)[1]) 
                    ]"> 
          <li> 
        <span>
          <asp:LinkButton ID ="{/Promotions/Promotion[Category=$category]/ID}" onclick="LinkClicked">

        <xsl:value-of select="."/>
         </asp:LinkButton>
        </span> 
          </li> 

        </xsl:for-each>

      </xsl:template>

    </xsl:stylesheet> 

我的问题是,输出的ID如果客户在一个类别中有多个促销活动,我只会得到第一个ID,并为每个ID重复,那么最好的方法是什么来更改此ID,使其与促销标题所来自的行相匹配?

这是我所说的输出,我不太了解XSL…

 <ul id="red" class="treeview-red" xmlns:asp="remove">
  <li><span>Arts &amp; Entertainment</span><ul>
      <li><span>Client 1</span><ul>
          <li><span><asp:LinkButton ID="2" onclick="LinkClicked">Get your Free 2</asp:LinkButton></span></li>
          <li><span><asp:LinkButton ID="2" onclick="LinkClicked">Get your Free 4</asp:LinkButton></span></li>
          <li><span><asp:LinkButton ID="2" onclick="LinkClicked">Get your Free 5</asp:LinkButton></span></li>
        </ul>
      </li>
    </ul>
  </li>
  <li><span>Community &amp; Neighborhood</span><ul>
      <li><span>Client 2</span><ul>
          <li><span><asp:LinkButton ID="1" onclick="LinkClicked">Get your Free 1</asp:LinkButton></span></li>
        </ul>
      </li>
    </ul>
  </li>
  <li><span>Education</span><ul>
      <li><span>Client 3</span><ul>
          <li><span><asp:LinkButton ID="3" onclick="LinkClicked">Get Your Free 3</asp:LinkButton></span></li>
        </ul>
      </li>
    </ul>
  </li>
  <li><span>Home &amp; Garden</span><ul>
      <li><span>Client 4</span><ul>
          <li><span><asp:LinkButton ID="6" onclick="LinkClicked">Get your Free 6</asp:LinkButton></span></li>
        </ul>
      </li>
    </ul>
  </li>
</ul>