/// 1.创建XML文档
/// 2.在根节点下增加子元素
/// 3.在元素下增加子元素
/// 4.获取类型为制定值的一组节点
/// 5.抓取网页上的xml文档赋值给XmlDocument对象
/// 6.获取服务器上指定文件的xml文件内容
/// 7.读取xml直接返回DataSet
/// 8.读取Xml返回一个经排序或筛选后的DataView
/// 9.向Xml文件插入一行数据
/// 10.更行符合条件的一条Xml记录
/// 11.通过删除DataSet中iDeleteRow这一行,然后重写Xml以实现删除指定行
/// 12.删除strColumn列中值为ColumnValue的行
/// 13.删除所有行
/// 14.返回完整路径
using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.IO;
using System.Data;
using System.Data.SqlClient;
using System.Net;namespace Tools
{class XML{/// <summary>/// 创建XML文档/// </summary>/// <param name="name">根节点名称</param>/// <param name="type">根节点的一个属性值</param>/// <returns></returns>/// moss中调用方法：创建的文件如果要存到moss的文档库中,则：///          XmlDocument doc = XmlOperate.CreateXmlDocument("project", "T");///            在此可嵌入增加子节点方法,如AddTaskNode(taskObj, ref doc); ..///          byte[] fileContent = Encoding.UTF8.GetBytes(doc.OuterXml);///          folder.Files.Add("name.xml", fileContent, true);///          web.Update();/// .net中调用方法：写入文件中,则：///          document = XmlOperate.CreateXmlDocument("sex", "sexy");///          document.Save("c:/bookstore.xml");         public static XmlDocument CreateXmlDocument(string name, string type){XmlDocument doc = null;XmlElement rootEle = null;try{doc = new XmlDocument();doc.LoadXml("<" + name + "/>");rootEle = doc.DocumentElement;rootEle.SetAttribute("type", type);}catch (Exception er){throw er;}return doc;}/// <summary>/// 在根节点下增加子元素/// </summary>/// <param name="document"></param>/// <param name="nodeName"></param>/// <param name="type"></param>/// 调用方法：///      document = xmloper.CreateXmlDocument("animal", "carnivore");///      XmlOperate.AddNewNode1(ref document, "carnivore", "high");public static void AddNewNode1(ref XmlDocument document, string nodeName, string type){XmlElement taskEle = null;try{taskEle = document.CreateElement(nodeName);taskEle.SetAttribute("type", type);document.DocumentElement.AppendChild((XmlNode)taskEle);}catch (Exception ex){throw ex;}}/// <summary>/// 在元素下增加子元素/// </summary>/// <param name="element"></param>/// <param name="nodeName"></param>/// <param name="type"></param>/// 调用方法：///       XmlDocument document = new XmlDocument();///       先取到相应的元素,然后调用该方法在该元素下增加子元素///       XmlElement root = (XmlElement)document.SelectSingleNode("//animal/third");///       XmlOperate.AddNewNode2(ref root,"thaw","boost investor confidence");///注意上面的"//animal/third"也可换成"workflow[@type='T' and @isSpecial='1']"这种形式用来获取带有相应属性的元素public static void AddNewNode2(ref XmlElement element, string nodeName, string type){XmlElement taskEle = null;try{taskEle = element.OwnerDocument.CreateElement(nodeName);taskEle.SetAttribute("type", type);element.AppendChild((XmlNode)taskEle);}catch (Exception ex){throw ex;}}/// <summary>/// 获取类型为制定值的一组节点/// </summary>/// <param name="type">类型值。E.G.workflow[@type='T' and @isSpecial='1']</param>/// <returns></returns>/// 注意：返回的 XmlNodeList 类型是个类似于arraylist的类型,所以要得到它的值只能遍历public static XmlNodeList GetDesiredNode(string type){XmlDocument document = new XmlDocument();return document.SelectNodes("type");}/// <summary>/// 抓取网页上的xml文档赋值给XmlDocument对象/// </summary>/// <param name="url">网页的url（网页的内容必须是xml格式的）</param>/// <returns></returns>public static XmlDocument GetXMLDocumentFromWebPage(string url){HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);myRequest.Method = "POST";myRequest.ContentType = "application/x-www-form-urlencoded";myRequest.ContentLength = 0;// Get response HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.Default);string content = reader.ReadToEnd();XmlDocument document = new XmlDocument();document.LoadXml(content);return document;}/// <summary>/// 获取服务器上指定文件的xml文件内容/// </summary>/// <param name="location"></param>/// <returns></returns>public static string GetXMLFile(string location){XmlDocument document = new XmlDocument();document.Load(@"G:\ttt.xml");return document.InnerXml;}//获取sharepoint中指定文件的内容//public string GetProjectWorkflowUrl(SPFile file)//{      //    byte[] content = file.OpenBinary();//    contentStr = Encoding.UTF8.GetString(content);//    return contentStr;       //}#region GetDataSetByXml/// <summary>/// 读取xml直接返回DataSet /// </summary>/// <param name="strXmlPath">xml文件相对路径</param>/// <returns></returns>public static DataSet GetDataSetByXml(string strXmlPath){try{DataSet ds = new DataSet();ds.ReadXml(GetXmlFullPath(strXmlPath));if (ds.Tables.Count > 0){return ds;}return null;}catch (Exception ){return null;}}#endregion#region GetDataViewByXml/// <summary>/// 读取Xml返回一个经排序或筛选后的DataView /// </summary>/// <param name="strXmlPath">xml文件相对路径</param>/// <param name="strWhere">筛选条件,如："name = ＇kgdiwss＇"</param>/// <param name="strSort">排序条件,如："Id desc"</param>/// <returns></returns>        public static DataView GetDataViewByXml(string strXmlPath, string strWhere, string strSort){try{DataSet ds = new DataSet();ds.ReadXml(GetXmlFullPath(strXmlPath));DataView dv = new DataView(ds.Tables[0]);if (strSort != null){dv.Sort = strSort;}if (strWhere != null){dv.RowFilter = strWhere;}return dv;}catch (Exception){return null;}}#endregion#region WriteXmlByDataSet/// /// 向Xml文件插入一行数据 /// /// xml文件相对路径 /// 要插入行的列名数组,如：string[] Columns = {"name","IsMarried"}; /// 要插入行每列的值数组,如：string[] ColumnValue={"明天去要饭","false"}; /// 成功返回true,否则返回false public static bool WriteXmlByDataSet(string strXmlPath, string[] Columns, string[] ColumnValue){try{//根据传入的XML路径得到.XSD的路径,两个文件放在同一个目录下 string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";DataSet ds = new DataSet();//读xml架构,关系到列的数据类型
                ds.ReadXmlSchema(GetXmlFullPath(strXsdPath));ds.ReadXml(GetXmlFullPath(strXmlPath));DataTable dt = ds.Tables[0];//在原来的表格基础上创建新行 DataRow newRow = dt.NewRow();//循环给一行中的各个列赋值 for (int i = 0; i < Columns.Length; i++){newRow[Columns[i]] = ColumnValue[i];}dt.Rows.Add(newRow);dt.AcceptChanges();ds.AcceptChanges();ds.WriteXml(GetXmlFullPath(strXmlPath));return true;}catch (Exception){return false;}}#endregion#region UpdateXmlRow/// /// 更行符合条件的一条Xml记录 /// /// XML文件路径 /// 列名数组 /// 列值数组 /// 条件列名 /// 条件列值 /// public static bool UpdateXmlRow(string strXmlPath, string[] Columns, string[] ColumnValue, string strWhereColumnName, string strWhereColumnValue){try{string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";DataSet ds = new DataSet();//读xml架构,关系到列的数据类型
                ds.ReadXmlSchema(GetXmlFullPath(strXsdPath));ds.ReadXml(GetXmlFullPath(strXmlPath));//先判断行数 if (ds.Tables[0].Rows.Count > 0){for (int i = 0; i < ds.Tables[0].Rows.Count; i++){//如果当前记录为符合Where条件的记录 if (ds.Tables[0].Rows[i][strWhereColumnName].ToString().Trim().Equals(strWhereColumnValue)){//循环给找到行的各列赋新值 for (int j = 0; j < Columns.Length; j++){ds.Tables[0].Rows[i][Columns[j]] = ColumnValue[j];}//更新DataSet
                            ds.AcceptChanges();//重新写入XML文件
                            ds.WriteXml(GetXmlFullPath(strXmlPath));return true;}}}return false;}catch (Exception){return false;}}#endregion#region DeleteXmlRowByIndex/// /// 通过删除DataSet中iDeleteRow这一行,然后重写Xml以实现删除指定行 /// /// /// 要删除的行在DataSet中的Index值 public static bool DeleteXmlRowByIndex(string strXmlPath, int iDeleteRow){try{DataSet ds = new DataSet();ds.ReadXml(GetXmlFullPath(strXmlPath));if (ds.Tables[0].Rows.Count > 0){//删除符号条件的行 ds.Tables[0].Rows[iDeleteRow].Delete();}ds.WriteXml(GetXmlFullPath(strXmlPath));return true;}catch (Exception){return false;}}#endregion#region DeleteXmlRows/// /// 删除strColumn列中值为ColumnValue的行 /// /// xml相对路径 /// 列名 /// strColumn列中值为ColumnValue的行均会被删除 /// public static bool DeleteXmlRows(string strXmlPath, string strColumn, string[] ColumnValue){try{DataSet ds = new DataSet();ds.ReadXml(GetXmlFullPath(strXmlPath));//先判断行数 if (ds.Tables[0].Rows.Count > 0){//判断行多还是删除的值多,多的for循环放在里面 if (ColumnValue.Length > ds.Tables[0].Rows.Count){for (int i = 0; i < ds.Tables[0].Rows.Count; i++){for (int j = 0; j < ColumnValue.Length; j++){if (ds.Tables[0].Rows[i][strColumn].ToString().Trim().Equals(ColumnValue[j])){ds.Tables[0].Rows[i].Delete();}}}}else{for (int j = 0; j < ColumnValue.Length; j++){for (int i = 0; i < ds.Tables[0].Rows.Count; i++){if (ds.Tables[0].Rows[i][strColumn].ToString().Trim().Equals(ColumnValue[j])){ds.Tables[0].Rows[i].Delete();}}}}ds.WriteXml(GetXmlFullPath(strXmlPath));}return true;}catch (Exception){return false;}}#endregion#region DeleteXmlAllRows/// /// 删除所有行 /// /// XML路径 /// public static bool DeleteXmlAllRows(string strXmlPath){try{DataSet ds = new DataSet();ds.ReadXml(GetXmlFullPath(strXmlPath));//如果记录条数大于0 if (ds.Tables[0].Rows.Count > 0){//移除所有记录 ds.Tables[0].Rows.Clear();}//重新写入,这时XML文件中就只剩根节点了
                ds.WriteXml(GetXmlFullPath(strXmlPath));return true;}catch (Exception){return false;}}#endregion#region GetXmlFullPath/// /// 返回完整路径 /// /// Xml的路径 /// public static string GetXmlFullPath(string strPath){//如果路径中含有:符号,则认定为传入的是完整路径 if (strPath.IndexOf(":") > 0){return strPath;}else{//返回完整路径 return System.Web.HttpContext.Current.Server.MapPath(strPath);}}#endregion}
}