public void readXmla()
        {
            XmlDocument doc = new XmlDocument();
            doc.Load("pic.xml");

            XmlNodeList elemList = doc.GetElementsByTagName("img");

            foreach (XmlNode xn in elemList)//遍历所有子节点
            {
                XmlElement xe = (XmlElement)xn;//将子节点类型转换为XmlElement类型
                Console.WriteLine("name=" + xe.GetAttribute("picpath"));//[color=#FF0000]在这里只能把picpath当做属性拿出来,但是无法得到clickurl[/color]
              [color=#FF0000]//假设我要在这里做判断,由picpath得到他对应的clickurl该怎么做?[/color]
              if(xe.GetAttribute("picpath")=="中国")
              {
               [color=#FF0000]//我在这里想拿到 clickurl的值[/color]
              }
            }
        }

System.Xml.XmlDocument document = new System.Xml.XmlDocument();          
            document.InnerXml = @" <imgdata>   
<img picpath=""中国"">   
<clickurl>  1  </clickurl>     
</img>   
<img picpath=""日本"">   
<clickurl>  2  </clickurl>     
</img>   
<img picpath=""美国"">   
<clickurl>  3  </clickurl>     
</img>   
</imgdata>   
"; 
               System.Xml.XmlNodeList nl = document.SelectNodes(@"//clickurl");

           
            foreach (System.Xml.XmlNode n in nl) 
            {
                Console.WriteLine(n.ParentNode.Attributes["picpath"].Value);
                Console.WriteLine(n.InnerText); 
            }

------解决方案--------------------

     public void readXmla()  
       {  
           XmlDocument doc = new XmlDocument();  
           doc.Load(@"D:\project\zhangbotest\WindowsApplication1\WindowsApplication1\aa.xml");  

           XmlNodeList elemList = doc.SelectNodes("//imgdata//img[@picpath='中国']");  
           foreach (XmlElement e in elemList)  
           {  
               e["name"]；
e["clickurl"]；
           }  
         
           
       }