С учетом этого XML
<?xml version="1.0" encoding="UTF-8"?>
<root>
<node1 attribute1="attrib1" attribute2="attrib2">
<node2>
<node3>Item1</node3>
<node3>Item2</node3>
<node3>Item3</node3>
</node2>
</node1>
</root>
Мы можем получить данные несколькими способами.Этот класс имеет два метода, первый будет проходить по всем узлам, пока не получит нужные нам данные.Второй будет использовать метод XmlDocument.GetElementsByTagName (), чтобы перейти прямо к нужным нам данным.
using System;
using System.Xml;
using System.Collections.Generic;
public static class MyXmlParser
{
///This method will loop through each node to get to the data we want.
public static List<string> GetItemsFromXmlByLoopingThroughEachNode(string Filename)
{
//Create a list to store all the items.
List<string> Items = new List<string>();
//Load the document from a file.
XmlDocument doc = new XmlDocument();
doc.Load(Filename);
//Loop through all the nodes in the document.
foreach(XmlNode RootNode in doc.ChildNodes)
{
if(RootNode.NodeType != XmlNodeType.XmlDeclaration)
{//If the node is not the declaration node parse it.
//Loop through all the child nodes of <root>
foreach(XmlNode Node1Node in RootNode.ChildNodes)
{
//Read Attributes of <node1>
XmlAttributeCollection attributes = Node1Node.Attributes;
XmlAttribute Attribute1 = attributes["attribute1"];
//Attribute1.Value will give you the string contained in the attribute.
//Loop through all child nodes of <node1>
foreach(XmlNode Node2Node in Node1Node.ChildNodes)
{
//Loop through all child nodes of <node2>
foreach(XmlNode Node3Node in Node2Node.ChildNodes)
{
//These nodes contain the data we want so lets add it to our List.
Items.Add(Node3Node.InnerText);
}
}
}
}
}
//Return the List of items we found.
return Items;
}
///This method will use GetElementsByTagName to go right to the data we want.
public static List<string> GetItemsFromXmlUsingTagNames(string Filename, string TagName)
{
//Create a list to store all the items.
List<string> Items = new List<string>();
//Load the document from a file.
XmlDocument doc = new XmlDocument();
doc.Load(Filename);
//Get all the <node3> nodes.
XmlNodeList Node3Nodes = doc.GetElementsByTagName(TagName);
//Loop through the node list to get the data we want.
foreach(XmlNode Node3Node in Node3Nodes)
{
//These nodes contain the data we want so lets add it to our List.
Items.Add(Node3Node.InnerText);
}
//Return the List of items we found.
return Items;
}
}
Когда у вас есть необходимые данные, вы можете добавить элементы в ComboBox
//Get the items from the XML file.
List<string> Items = MyXmlParser.GetItemsFromXmlUsingTagNames("C:\\test.xml","node3");
//Add them to the ComboBox
ComboBox1.Items.AddRange(Items.ToArray())
См.
XmlDocument
XmlNodeList
XmlNode
XmlAttributeCollection
XmlAttribute