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371 lines
12 KiB
371 lines
12 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Xml;
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using System.IO;
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using System.Data;
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namespace QMTask.Core
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{
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/// <summary>
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/// XML操作类
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/// </summary>
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public class XmlHelper
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{
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protected string strXmlFile;
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protected XmlDocument objXmlDoc = new XmlDocument();
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public XmlHelper(string XmlFile)
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{
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//
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// TODO: 在这里加入建构函式的程序代码
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//
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try
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{
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objXmlDoc.Load(XmlFile);
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}
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catch (System.Exception ex)
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{
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throw ex;
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}
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strXmlFile = XmlFile;
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}
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/// <summary>
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/// 从XML中获取实体列表
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/// </summary>
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/// <param name="XmlPathNode"></param>
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/// <returns></returns>
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public List<T> GetData<T>(string XmlPathNode) where T : new()
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{
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try
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{
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DataTable dt = GetData(XmlPathNode);
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if (dt != null)
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{
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return ConvertToModel<T>(dt);
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}
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else
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{
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return new List<T>();
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}
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}
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catch
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{
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throw;
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}
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}
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/// <summary>
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/// //查找数据。返回一个DataView
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/// </summary>
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/// <param name="XmlPathNode"></param>
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/// <returns></returns>
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public DataTable GetData(string XmlPathNode)
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{
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//查找数据。返回一个DataView
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DataSet ds = new DataSet();
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StringBuilder str = new StringBuilder();
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str.Append("<root>");
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foreach (XmlNode a in objXmlDoc.SelectNodes(XmlPathNode))
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{
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str.Append(a.OuterXml);
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str.Append("\r\n");
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}
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str.Append("</root>");
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StringReader read = new StringReader(str.ToString());
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ds.ReadXml(read);
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if (ds.Tables.Count == 0)
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{
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return null;
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}
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else
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{
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return ds.Tables[0];
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}
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}
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/// <summary>
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/// 新节点内容。
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/// 示例：xmlTool.Replace("Book/Authors[ISBN=\"0002\"]/Content","ppppppp");
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/// </summary>
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/// <param name="XmlPathNode"></param>
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/// <param name="Content"></param>
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public void Replace(string XmlPathNode, string Content)
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{
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//更新节点内容。
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objXmlDoc.SelectSingleNode(XmlPathNode).InnerText = Content;
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}
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/// <summary>
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/// 修改节点属性
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/// </summary>
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/// <param name="Node"></param>
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/// <param name="attrs"></param>
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public void UpdateAttributes(string Node,Dictionary<string, string> attrs)
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{
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if (objXmlDoc.SelectSingleNode(Node) == null)
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{
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return;
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}
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foreach (var a in attrs)
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{
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objXmlDoc.SelectSingleNode(Node).Attributes[a.Key].Value = a.Value;
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}
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}
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/// <summary>
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/// 删除一个指定节点的子节点。
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/// 示例： xmlTool.DeleteChild("Book/Authors[ISBN=\"0003\"]");
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/// </summary>
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/// <param name="Node"></param>
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public void DeleteChild(string Node)
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{
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//删除一个节点。
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string mainNode = Node.Substring(0, Node.LastIndexOf("/"));
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objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(Node));
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}
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/// <summary>
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/// * 使用示列:
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/// 示例： XmlHelper.Delete( "/Node", "")
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/// XmlHelper.Delete( "/Node", "Attribute")
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/// </summary>
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/// <param name="node">节点</param>
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/// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>
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public void Delete(string node, string attribute)
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{
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try
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{
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XmlNode xn = objXmlDoc.SelectSingleNode(node);
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XmlElement xe = (XmlElement)xn;
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if (attribute.Equals(""))
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xn.ParentNode.RemoveChild(xn);
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else
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xe.RemoveAttribute(attribute);
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}
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catch { }
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}
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/// <summary>
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/// 插入一节点和此节点的一子节点。
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/// 示例：xmlTool.InsertNode("Book","Author","ISBN","0004");
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/// </summary>
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/// <param name="MainNode">主节点</param>
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/// <param name="ChildNode">子节点</param>
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/// <param name="Element">元素</param>
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/// <param name="Content">内容</param>
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public void InsertNode(string MainNode, string ChildNode, string Element, string Content)
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{
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//插入一节点和此节点的一子节点。
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XmlNode objRootNode = objXmlDoc.SelectSingleNode(MainNode);
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XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode);
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objRootNode.AppendChild(objChildNode);
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XmlElement objElement = objXmlDoc.CreateElement(Element);
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objElement.InnerText = Content;
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objChildNode.AppendChild(objElement);
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}
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/// <summary>
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/// 插入一个节点，带一属性。
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/// 示例： xmlTool.InsertElement("Book/Author[ISBN=\"0004\"]","Title","Sex","man","iiiiiiii");
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/// </summary>
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/// <param name="MainNode">主节点</param>
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/// <param name="Element">元素</param>
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/// <param name="Attrib">属性</param>
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/// <param name="AttribContent">属性内容</param>
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/// <param name="Content">元素内容</param>
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public void InsertElement(string MainNode, string Element, string Attrib, string AttribContent, string Content)
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{
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//插入一个节点，带一属性。
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XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
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XmlElement objElement = objXmlDoc.CreateElement(Element);
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objElement.SetAttribute(Attrib, AttribContent);
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objElement.InnerText = Content;
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objNode.AppendChild(objElement);
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}
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/// <summary>
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/// 插入一个节点，带节点列表。
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/// </summary>
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/// <param name="MainNode">主节点</param>
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/// <param name="Element">元素</param>
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/// <param name="Attrib">属性</param>
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/// <param name="AttribContent">属性内容</param>
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/// <param name="Content">元素内容</param>
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public void InsertElement(string MainNode, string Element, Dictionary<string,string> Attribs , string Content)
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{
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//插入一个节点，带一属性。
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XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
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XmlElement objElement = objXmlDoc.CreateElement(Element);
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foreach (var a in Attribs)
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{
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objElement.SetAttribute(a.Key, a.Value);
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}
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objElement.InnerText = Content;
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objNode.AppendChild(objElement);
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}
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/// <summary>
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/// 插入一个节点，不带属性。
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/// 示例：xmlTool.InsertElement("Book/Author[ISBN=\"0004\"]","Content","aaaaaaaaa");
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/// </summary>
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/// <param name="MainNode">主节点</param>
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/// <param name="Element">元素</param>
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/// <param name="Content">元素内容</param>
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public void InsertElement(string MainNode, string Element, string Content)
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{
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//插入一个节点，不带属性。
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XmlNode objNode = objXmlDoc.SelectSingleNode(MainNode);
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XmlElement objElement = objXmlDoc.CreateElement(Element);
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objElement.InnerText = Content;
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objNode.AppendChild(objElement);
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}
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/// <summary>
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/// 对xml文件做插入，更新，删除后需做Save()操作，以保存修改
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/// </summary>
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public void Save()
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{
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//保存文檔。
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try
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{
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objXmlDoc.Save(strXmlFile);
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}
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catch (System.Exception ex)
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{
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throw ex;
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}
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objXmlDoc = null;
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}
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/// <summary>
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/// 将datatable转成实体
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="dt"></param>
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/// <returns></returns>
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public static List<T> ConvertToModel<T>(DataTable dt) where T : new()
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{
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try
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{
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List<T> lists = new List<T>();
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Type type = typeof(T);
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foreach (DataRow dr in dt.Rows)
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{
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T result = new T();
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foreach (var item in type.GetProperties())
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{
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//object[] attrs = item.GetCustomAttributes(typeof(DBColumnAttribute), true);
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//if (attrs.Count() == 0)
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//{
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// continue;
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//}
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//DBColumnAttribute temp = (DBColumnAttribute)attrs[0];
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var column = item.Name.ToUpper();
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if (!dt.Columns.Contains(column))
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{ continue; }
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var value = dr[column] != null ? dr[column] : null;
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if (item.PropertyType == typeof(Int32))
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{
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int num = 0;
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try
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{
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num = Convert.ToInt32(value);
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}
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catch
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{
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}
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item.SetValue(result, num, null);
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}
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else if (item.PropertyType == typeof(Int64))
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{
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Int64 num = 0;
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try
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{
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num = Convert.ToInt64(value);
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}
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catch
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{
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}
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item.SetValue(result, num, null);
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}
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else if (item.PropertyType == typeof(decimal))
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{
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decimal num = 0;
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try
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{
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num = Convert.ToDecimal(value);
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}
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catch
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{
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}
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item.SetValue(result, num, null);
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}
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else if (item.PropertyType == typeof(DateTime))
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{
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DateTime num = new DateTime();
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try
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{
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num = Convert.ToDateTime(value);
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}
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catch
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{
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}
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item.SetValue(result, num, null);
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}
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else if (item.PropertyType == typeof(string))
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{
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item.SetValue(result, value.ToString(), null);
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}
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else if (value == System.DBNull.Value)
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{
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item.SetValue(result, "", null);
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}
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else
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{
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//object value = value == System.DBNull.Value ? null : row[i];
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item.SetValue(result, value, null);
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}
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//item.SetValue(result, value, null);
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}
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lists.Add(result);
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}
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return lists;
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}
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catch (Exception ex)
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{
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throw;
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}
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}
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}
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}
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