C# XmlTextReader.GetNamespacesInScope方法代碼示例

		/// <summary>
		/// Gets the parent element path based on the index position. This
		/// method does not compact the path so it will include all elements
		/// including those in another namespace in the path.
		/// </summary>
		static XmlElementPath GetFullParentElementPath(string xml)
		{
			XmlElementPath path = new XmlElementPath();
			IDictionary<string, string> namespacesInScope = null;
			using (StringReader reader = new StringReader(xml)) {
				using (XmlTextReader xmlReader = new XmlTextReader(reader)) {
					try {
						xmlReader.XmlResolver = null; // prevent XmlTextReader from loading external DTDs
						while (xmlReader.Read()) {
							switch (xmlReader.NodeType) {
								case XmlNodeType.Element:
									if (!xmlReader.IsEmptyElement) {
										QualifiedName elementName = new QualifiedName(xmlReader.LocalName, xmlReader.NamespaceURI, xmlReader.Prefix);
										path.AddElement(elementName);
									}
									break;
								case XmlNodeType.EndElement:
									path.Elements.RemoveLast();
									break;
							}
						}
					} catch (XmlException) {
						namespacesInScope = xmlReader.GetNamespacesInScope(XmlNamespaceScope.All);
					}
				}
			}
			
			// Add namespaces in scope for the last element read.
			if (namespacesInScope != null) {
				foreach (KeyValuePair<string, string> ns in namespacesInScope) {
					path.NamespacesInScope.Add(new XmlNamespace(ns.Key, ns.Value));
				}
			}
			
			return path;
		}

    public static XmlElementPath GetParentElementPathCore(string xml)
    {
      XmlElementPath path = new XmlElementPath();

      try
      {
        StringReader reader = new StringReader(xml);
        XmlTextReader xmlReader = new XmlTextReader(reader);
        xmlReader.XmlResolver = null;
        while (xmlReader.Read())
        {
          switch (xmlReader.NodeType)
          {
            case XmlNodeType.Element:
              if (!xmlReader.IsEmptyElement)
              {
                QualifiedName elementName = new QualifiedName(xmlReader.LocalName, xmlReader.NamespaceURI, xmlReader.Prefix);
                path.Elements.Add(elementName);
                path.Namespaces = xmlReader.GetNamespacesInScope(XmlNamespaceScope.All);
              }
              break;
            case XmlNodeType.EndElement:
              path.Elements.RemoveLast();
              break;
          }
        }
      }
      catch (XmlException)
      {
        // Do nothing.
      }
      catch (WebException)
      {
        // Do nothing.
      }

      return path;
    }

        /// <summary>
        /// This method checks if the attached 
        /// </summary>
        /// <param name="element"></param>
        /// <param name="reader"></param>
        /// <returns></returns>
        private static bool CheckIfNameSpaceDAVSpace(String element, XmlTextReader reader)
        {
            // split the element into tag and field
            String[] fields = element.Split(':');

            // could be that the element has no namespace attached, so it is not part
            // of the webdav response
            if (fields.Length == 1)
                return false;

            // get the namespace list
            IDictionary<String, String> nameSpaceList = reader.GetNamespacesInScope(XmlNamespaceScope.All);

            // get the namespace of our node
            if (!nameSpaceList.ContainsKey(fields[0]))
                return false;

            // get the value
            String NsValue = nameSpaceList[fields[0]];

            // compare if it's a DAV namespce
            if (NsValue.ToLower().Equals("dav:"))
                return true;
            else
                return false;
        }

    public static IDictionary<string, string> GetNamespacesInScope(string xml)
    {
      try
      {
        var xmlReader = new XmlTextReader(new StringReader(xml));
        xmlReader.XmlResolver = null;
        while (xmlReader.Read())
        {
          switch (xmlReader.NodeType)
          {
            case XmlNodeType.Element:
              return xmlReader.GetNamespacesInScope(XmlNamespaceScope.All);
          }
        }
      }
      catch (XmlException) { /* Do nothing. */ }
      catch (WebException) { /* Do nothing. */ }

      return null;
    }