C#Xml节点读取 [英] C# Xml node reading

问题描述

我正在读取一个xml文件，并试图将其中一个节点填充到一个下拉框中.我已经做到了.但是，下拉框显示了每个节点的内部文本，我需要消除重复项.

I am reading a xml file and trying to populate one of the nodes into a dropdownbox. I''ve managed to do this. However the dropdownbox shows every node innertext and I need to get rid of the duplicates.

XmlDocument doc = new XmlDocument();

            doc.Load(xml_Url);

            XmlNodeList nodes = doc.SelectNodes("JOBS/JOB/CATEGORIES/CATEGORY");
            

            foreach (XmlNode node in nodes)
            {

             DropDownList1.Items.Add(newListItem(node.FirstChild.InnerText, node.LastChild.InnerText));

            }

推荐答案

以下使用的是Xml.Linq(相对于.Net 2.0中的原始Xml类，我更喜欢它).警告-我是从记忆中做到这一点的，因此您可能需要对其进行一些微调.)

The following usis Xml.Linq (I prefer this to the original Xml classes in .Net 2.0). Caveat - I did this from memory, so you may have to tweak it a little).

XDocument doc = XDocument.Load(xm_Uri);
XElement root = doc.Element("JOBS/JOB/CATEGORIES");
foreach (XElement element in root.Elements())
{
    DropDownList1.Items.Add(element.Element("Category").Value.ToString());
}

您可以使用ListBox(我假设您的DropDownBox就是)方法:DropDownList1.Items.Contains(entry)如下:

You can use the ListBox (which is what your DropDownBox is I assume) method: DropDownList1.Items.Contains(entry) as follows:

  foreach (XmlNode node in nodes)
            {
      if(!DropDownList1.Items.Contains(node.FirstChild.InnerText)
            { DropDownList1.Items.Add(newListItem(node.FirstChild.InnerText, node.LastChild.InnerText));
}
            }

这将检查列表中是否已存在新条目，如果没有，则仅添加它.

希望这会有所帮助.

This will check to see if the new entry is already in the list and only add it if not.

Hope this helps.

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