基於C#完成XML文件讀取對象類。本站提示廣大學習愛好者：（基於C#完成XML文件讀取對象類）文章只能為提供參考，不一定能成為您想要的結果。以下是基於C#完成XML文件讀取對象類正文
本文實例講述了基於C#完成XML文件讀取對象類。分享給年夜家供年夜家參考。詳細以下：
這是我客歲寫的一個XML文件讀取對象類，如今做了一些調劑
根本能知足普通的XML文件讀取需求。
更新：
2013年6月26日19:37 Fix了幾個Bug，為一切辦法添加單位測試，並運轉經由過程；同時調劑了幾個辦法的地位。
/// <summary>
/// Author: jiangxiaoqiang
/// </summary>
public class XmlReader
{
//========================================================= //
#region 獲得XmlDocument對象
/// <summary>
/// 依據XML文件內容獲得XmlDocument對象
/// </summary>
/// <param name="xmlFileContent"></param>
/// <returns></returns>
public static XmlDocument GetXmlDocByXmlContent(string xmlFileContent)
{
if (string.IsNullOrEmpty(xmlFileContent))
{
return null;
}
var xDoc = new XmlDocument();
try
{
xDoc.LoadXml(xmlFileContent);
}
catch
{
xDoc = null;
}
return xDoc;
}
/// <summary>
/// 依據XML文件途徑獲得XmlDocument對象
/// </summary>
/// <param name="xmlFilePath"></param>
/// <returns></returns>
public static XmlDocument GetXmlDocByFilePath(string xmlFilePath)
{
if (string.IsNullOrEmpty(xmlFilePath) || !File.Exists(xmlFilePath))
{
return null;
}
var xDoc = new XmlDocument();
try
{
xDoc.Load(xmlFilePath);
}
catch
{
throw new Exception(string.Format("請確認該XML文件格局准確，途徑為：{0}", xmlFilePath));
}
return xDoc;
}
#endregion
//========================================================= //
//========================================================= //
#region 獲得XML節點（或節點列表）
/// <summary>
/// 獲得父節點下指定節點稱號的第一個子節點
/// </summary>
/// <param name="parentXmlNode"></param>
/// <param name="childNodeName"></param>
/// <returns></returns>
public static XmlNode GetFirstChildNodeByName(XmlNode parentXmlNode, string childNodeName)
{
var childXmlNodes = GetChildNodesByName(parentXmlNode, childNodeName);
if (childXmlNodes != null && childXmlNodes.Count > 0)
{
return childXmlNodes[0];
}
return null;
}
/// <summary>
/// 獲得父節點下指定節點稱號的子節點列表
/// </summary>
/// <param name="parentXmlNode">父節點</param>
/// <param name="nodeName">節點稱號</param>
/// <returns></returns>
public static XmlNodeList GetChildNodesByName(XmlNode parentXmlNode, string nodeName)
{
if (parentXmlNode == null || string.IsNullOrEmpty(nodeName))
{
return null;
}
return GetChildNodesByXPathExpr(parentXmlNode, string.Format(".//{0}", nodeName));
}
/// <summary>
/// 獲得父節點下知足xpathExpr表達式的XML子節點列表
/// </summary>
/// <param name="parentXmlNode">父節點</param>
/// <param name="xpathExpr"></param>
/// <returns></returns>
public static XmlNodeList GetChildNodesByXPathExpr(XmlNode parentXmlNode, string xpathExpr)
{
if (parentXmlNode == null || string.IsNullOrEmpty(xpathExpr))
{
return null;
}
return parentXmlNode.SelectNodes(xpathExpr);
}
/// <summary>
/// 獲得父節點下的第一個子節點
/// </summary>
/// <param name="parentXmlNode"></param>
/// <returns></returns>
public static XmlNode GetFirstChildNode(XmlNode parentXmlNode)
{
var childXmlNodes = GetChildNodes(parentXmlNode);
if (childXmlNodes != null && childXmlNodes.Count > 0)
{
return childXmlNodes[0];
}
return null;
}
/// <summary>
/// 獲得父節點的子節點列表
/// </summary>
/// <param name="parentXmlNode">父節點</param>
/// <returns></returns>
public static XmlNodeList GetChildNodes(XmlNode parentXmlNode)
{
return parentXmlNode == null ? null : parentXmlNode.ChildNodes;
}
#endregion
//========================================================= //
//========================================================= //
#region 讀取節點屬性值
/// <summary>
/// 讀取某個XML節點的屬性值（依據屬性名）
/// </summary>
/// <param name="xmlNode"></param>
/// <param name="attrName"></param>
/// <returns></returns>
public static string ReadAttrValue(XmlNode xmlNode, string attrName)
{
var xmlElement = xmlNode as XmlElement;
return xmlElement == null ? null : xmlElement.GetAttribute(attrName);
}
/// <summary>
/// 讀取父節點下指定節點名和屬性名的第一個子節點的屬性值
/// </summary>
/// <param name="parentXmlNode">XML父節點</param>
/// <param name="childNodeName">節點稱號</param>
/// <param name="attrName">屬性名</param>
/// <returns></returns>
public static string ReadFirstAttrValue(XmlNode parentXmlNode, string childNodeName, string attrName)
{
var attrVals = ReadAttrValues(parentXmlNode, childNodeName, attrName);
return (attrVals == null || attrVals.Length == 0) ? null : attrVals[0];
}
/// <summary>
/// 讀取父節點下指定節點名和屬性名的一切子節點的該屬性值的數組
/// </summary>
/// <param name="parentXmlNode">XML文檔</param>
/// <param name="childNodeName">節點稱號</param>
/// <param name="attrName">屬性名</param>
/// <returns></returns>
public static string[] ReadAttrValues(XmlNode parentXmlNode, string childNodeName, string attrName)
{
if (parentXmlNode == null || string.IsNullOrEmpty(childNodeName) || string.IsNullOrEmpty(attrName))
{
return null;
}
var xpathExpr = string.Format("//{0}[@{1}]", childNodeName, attrName);
var nodes = GetChildNodesByXPathExpr(parentXmlNode, xpathExpr);
if (nodes != null && nodes.Count > 0)
{
var nodeCount = nodes.Count;
var attrVals = new string[nodeCount];
for (var i = 0; i < nodeCount; i++)
{
attrVals[i] = ((XmlElement)nodes[i]).GetAttribute(attrName);
}
return attrVals;
}
return null;
}
#endregion
//========================================================= //
//========================================================= //
#region 讀取父節點下的子節點的文本內容
/// <summary>
/// 讀取父節點下指定節點名的第一個子節點的文本
/// </summary>
/// <param name="parentXmlNode"></param>
/// <param name="childNodeName"></param>
/// <returns></returns>
public static string ReadFirstChildNodeTextByName(XmlNode parentXmlNode, string childNodeName)
{
var childNodeTexts = ReadChildNodeTextsByName(parentXmlNode, childNodeName);
if (childNodeTexts != null && childNodeTexts.Length > 0)
{
return childNodeTexts[0];
}
return null;
}
/// <summary>
/// 讀取父節點下指定節點名的一切子節點的文本數組
/// </summary>
/// <param name="parentXmlNode"></param>
/// <param name="childNodeName"></param>
/// <returns></returns>
public static string[] ReadChildNodeTextsByName(XmlNode parentXmlNode, string childNodeName)
{
if (parentXmlNode == null || string.IsNullOrEmpty(childNodeName))
{
return null;
}
var xpathExpr = string.Format(".//{0}", childNodeName);
var childNodes = GetChildNodesByXPathExpr(parentXmlNode, xpathExpr);
if (childNodes != null && childNodes.Count > 0)
{
var nodeCount = childNodes.Count;
var nodeTexts = new string[nodeCount];
for (var i = 0; i < nodeCount; i++)
{
nodeTexts[i] = childNodes[i].InnerText;
}
return nodeTexts;
}
return null;
}
/// <summary>
/// 讀取父節點下的第一個子節點的文本
/// </summary>
/// <param name="parentXmlNode"></param>
/// <returns></returns>
public static string ReadFirstChildNodeText(XmlNode parentXmlNode)
{
var childNodeTexts = ReadChildNodeTexts(parentXmlNode);
if (childNodeTexts != null && childNodeTexts.Length > 0)
{
return childNodeTexts[0];
}
return null;
}
/// <summary>
/// 讀取父節點下的一切子節點的文本數組
/// </summary>
/// <param name="parentXmlNode"></param>
/// <returns></returns>
public static string[] ReadChildNodeTexts(XmlNode parentXmlNode)
{
if (parentXmlNode == null)
{
return null;
}
var childNodes = GetChildNodes(parentXmlNode);
if (childNodes != null && childNodes.Count > 0)
{
var nodeCount = childNodes.Count;
var nodeTexts = new string[nodeCount];
for (var i = 0; i < nodeCount; i++)
{
nodeTexts[i] = childNodes[i].InnerText;
}
return nodeTexts;
}
return null;
}
/// <summary>
/// 讀取XML節點文本
/// </summary>
/// <param name="xmlNode"></param>
/// <returns></returns>
public static string ReadNodeText(XmlNode xmlNode)
{
if (xmlNode == null)
{
return null;
}
return xmlNode.InnerText;
}
#endregion
//========================================================= //
}
願望本文所述對年夜家的C#法式設計有所贊助。
