using System;
using System.Data;
using System.IO;
using System.Xml;
namespace DotNet.Utilities
{
  public class XMLProcess
  {
    #region 構(gòu)造函數(shù)
    public XMLProcess()
    { }
    public XMLProcess(string strPath)
    {
      this._XMLPath = strPath;
    }
    #endregion
    #region 公有屬性
    private string _XMLPath;
    public string XMLPath
    {
      get { return this._XMLPath; }
    }
    #endregion
    #region 私有方法
    /// <summary>
    /// 導(dǎo)入XML文件
    /// </summary>
    /// <param name="XMLPath">XML文件路徑</param>
    private XmlDocument XMLLoad()
    {
      string XMLFile = XMLPath;
      XmlDocument xmldoc = new XmlDocument();
      try
      {
        string filename = AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLFile;
        if (File.Exists(filename)) xmldoc.Load(filename);
      }
      catch (Exception e)
      { }
      return xmldoc;
    }
    /// <summary>
    /// 導(dǎo)入XML文件
    /// </summary>
    /// <param name="XMLPath">XML文件路徑</param>
    private static XmlDocument XMLLoad(string strPath)
    {
      XmlDocument xmldoc = new XmlDocument();
      try
      {
        string filename = AppDomain.CurrentDomain.BaseDirectory.ToString() + strPath;
        if (File.Exists(filename)) xmldoc.Load(filename);
      }
      catch (Exception e)
      { }
      return xmldoc;
    }
    /// <summary>
    /// 返回完整路徑
    /// </summary>
    /// <param name="strPath">Xml的路徑</param>
    private static string GetXmlFullPath(string strPath)
    {
      if (strPath.IndexOf(":") > 0)
      {
        return strPath;
      }
      else
      {
        return System.Web.HttpContext.Current.Server.MapPath(strPath);
      }
    }
    #endregion
    #region 讀取數(shù)據(jù)
    /// <summary>
    /// 讀取指定節(jié)點(diǎn)的數(shù)據(jù)
    /// </summary>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// 使用示列:
    /// XMLProsess.Read("/Node", "")
    /// XMLProsess.Read("/Node/Element[@Attribute='Name']")
    public string Read(string node)
    {
      string value = "";
      try
      {
        XmlDocument doc = XMLLoad();
        XmlNode xn = doc.SelectSingleNode(node);
        value = xn.InnerText;
      }
      catch { }
      return value;
    }
    /// <summary>
    /// 讀取指定路徑和節(jié)點(diǎn)的串聯(lián)值
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="attribute">屬性名，非空時(shí)返回該屬性值，否則返回串聯(lián)值</param>
    /// 使用示列:
    /// XMLProsess.Read(path, "/Node", "")
    /// XMLProsess.Read(path, "/Node/Element[@Attribute='Name']")
    public static string Read(string path, string node)
    {
      string value = "";
      try
      {
        XmlDocument doc = XMLLoad(path);
        XmlNode xn = doc.SelectSingleNode(node);
        value = xn.InnerText;
      }
      catch { }
      return value;
    }
    /// <summary>
    /// 讀取指定路徑和節(jié)點(diǎn)的屬性值
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="attribute">屬性名，非空時(shí)返回該屬性值，否則返回串聯(lián)值</param>
    /// 使用示列:
    /// XMLProsess.Read(path, "/Node", "")
    /// XMLProsess.Read(path, "/Node/Element[@Attribute='Name']", "Attribute")
    public static string Read(string path, string node, string attribute)
    {
      string value = "";
      try
      {
        XmlDocument doc = XMLLoad(path);
        XmlNode xn = doc.SelectSingleNode(node);
        value = (attribute.Equals("") ? xn.InnerText : xn.Attributes[attribute].Value);
      }
      catch { }
      return value;
    }
    /// <summary>
    /// 獲取某一節(jié)點(diǎn)的所有孩子節(jié)點(diǎn)的值
    /// </summary>
    /// <param name="node">要查詢的節(jié)點(diǎn)</param>
    public string[] ReadAllChildallValue(string node)
    {
      int i = 0;
      string[] str = { };
      XmlDocument doc = XMLLoad();
      XmlNode xn = doc.SelectSingleNode(node);
      XmlNodeList nodelist = xn.ChildNodes; //得到該節(jié)點(diǎn)的子節(jié)點(diǎn)
      if (nodelist.Count > 0)
      {
        str = new string[nodelist.Count];
        foreach (XmlElement el in nodelist)//讀元素值
        {
          str[i] = el.Value;
          i++;
        }
      }
      return str;
    }
    /// <summary>
    /// 獲取某一節(jié)點(diǎn)的所有孩子節(jié)點(diǎn)的值
    /// </summary>
    /// <param name="node">要查詢的節(jié)點(diǎn)</param>
    public XmlNodeList ReadAllChild(string node)
    {
      XmlDocument doc = XMLLoad();
      XmlNode xn = doc.SelectSingleNode(node);
      XmlNodeList nodelist = xn.ChildNodes; //得到該節(jié)點(diǎn)的子節(jié)點(diǎn)
      return nodelist;
    }
    /// <summary>
    /// 讀取XML返回經(jīng)排序或篩選后的DataView
    /// </summary>
    /// <param name="strWhere">篩選條件，如:"name='kgdiwss'"</param>
    /// <param name="strSort"> 排序條件，如:"Id desc"</param>
    public DataView GetDataViewByXml(string strWhere, string strSort)
    {
      try
      {
        string XMLFile = this.XMLPath;
        string filename = AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLFile;
        DataSet ds = new DataSet();
        ds.ReadXml(filename);
        DataView dv = new DataView(ds.Tables[0]); //創(chuàng)建DataView來完成排序或篩選操作  
        if (strSort != null)
        {
          dv.Sort = strSort; //對DataView中的記錄進(jìn)行排序
        }
        if (strWhere != null)
        {
          dv.RowFilter = strWhere; //對DataView中的記錄進(jìn)行篩選，找到我們想要的記錄
        }
        return dv;
      }
      catch (Exception)
      {
        return null;
      }
    }
    /// <summary>
    /// 讀取XML返回DataSet
    /// </summary>
    /// <param name="strXmlPath">XML文件相對路徑</param>
    public 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 插入數(shù)據(jù)
    /// <summary>
    /// 插入數(shù)據(jù)
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="element">元素名，非空時(shí)插入新元素，否則在該元素中插入屬性</param>
    /// <param name="attribute">屬性名，非空時(shí)插入該元素屬性值，否則插入元素值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Insert(path, "/Node", "Element", "", "Value")
    /// XMLProsess.Insert(path, "/Node", "Element", "Attribute", "Value")
    /// XMLProsess.Insert(path, "/Node", "", "Attribute", "Value")
    public static void Insert(string path, string node, string element, string attribute, string value)
    {
      try
      {
        XmlDocument doc = new XmlDocument();
        doc.Load(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        XmlNode xn = doc.SelectSingleNode(node);
        if (element.Equals(""))
        {
          if (!attribute.Equals(""))
          {
            XmlElement xe = (XmlElement)xn;
            xe.SetAttribute(attribute, value);
          }
        }
        else
        {
          XmlElement xe = doc.CreateElement(element);
          if (attribute.Equals(""))
            xe.InnerText = value;
          else
            xe.SetAttribute(attribute, value);
          xn.AppendChild(xe);
        }
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
      }
      catch { }
    }
    /// <summary>
    /// 插入數(shù)據(jù)
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="element">元素名，非空時(shí)插入新元素，否則在該元素中插入屬性</param>
    /// <param name="strList">由XML屬性名和值組成的二維數(shù)組</param>
    public static void Insert(string path, string node, string element, string[][] strList)
    {
      try
      {
        XmlDocument doc = new XmlDocument();
        doc.Load(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        XmlNode xn = doc.SelectSingleNode(node);
        XmlElement xe = doc.CreateElement(element);
        string strAttribute = "";
        string strValue = "";
        for (int i = 0; i < strList.Length; i++)
        {
          for (int j = 0; j < strList[i].Length; j++)
          {
            if (j == 0)
              strAttribute = strList[i][j];
            else
              strValue = strList[i][j];
          }
          if (strAttribute.Equals(""))
            xe.InnerText = strValue;
          else
            xe.SetAttribute(strAttribute, strValue);
        }
        xn.AppendChild(xe);
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
      }
      catch { }
    }
    /// <summary>
    /// 插入一行數(shù)據(jù)
    /// </summary>
    /// <param name="strXmlPath">XML文件相對路徑</param>
    /// <param name="Columns">要插入行的列名數(shù)組，如：string[] Columns = {"name","IsMarried"};</param>
    /// <param name="ColumnValue">要插入行每列的值數(shù)組，如：string[] ColumnValue={"XML大全","false"};</param>
    /// <returns>成功返回true,否則返回false</returns>
    public static bool WriteXmlByDataSet(string strXmlPath, string[] Columns, string[] ColumnValue)
    {
      try
      {
        //根據(jù)傳入的XML路徑得到.XSD的路徑，兩個(gè)文件放在同一個(gè)目錄下
        string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";
        DataSet ds = new DataSet();
        ds.ReadXmlSchema(GetXmlFullPath(strXsdPath)); //讀XML架構(gòu)，關(guān)系到列的數(shù)據(jù)類型
        ds.ReadXml(GetXmlFullPath(strXmlPath));
        DataTable dt = ds.Tables[0];
        DataRow newRow = dt.NewRow(); //在原來的表格基礎(chǔ)上創(chuàng)建新行
        for (int i = 0; i < Columns.Length; i++) //循環(huán)給一行中的各個(gè)列賦值
        {
          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 修改數(shù)據(jù)
    /// <summary>
    /// 修改指定節(jié)點(diǎn)的數(shù)據(jù)
    /// </summary>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="value">值</param>
    public void Update(string node, string value)
    {
      try
      {
        XmlDocument doc = XMLLoad();
        XmlNode xn = doc.SelectSingleNode(node);
        xn.InnerText = value;
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLPath);
      }
      catch { }
    }
    /// <summary>
    /// 修改指定節(jié)點(diǎn)的數(shù)據(jù)
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Insert(path, "/Node","Value")
    /// XMLProsess.Insert(path, "/Node","Value")
    public static void Update(string path, string node, string value)
    {
      try
      {
        XmlDocument doc = XMLLoad(path);
        XmlNode xn = doc.SelectSingleNode(node);
        xn.InnerText = value;
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
      }
      catch { }
    }
    /// <summary>
    /// 修改指定節(jié)點(diǎn)的屬性值(靜態(tài))
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="attribute">屬性名，非空時(shí)修改該節(jié)點(diǎn)屬性值，否則修改節(jié)點(diǎn)值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Insert(path, "/Node", "", "Value")
    /// XMLProsess.Insert(path, "/Node", "Attribute", "Value")
    public static void Update(string path, string node, string attribute, string value)
    {
      try
      {
        XmlDocument doc = XMLLoad(path);
        XmlNode xn = doc.SelectSingleNode(node);
        XmlElement xe = (XmlElement)xn;
        if (attribute.Equals(""))
          xe.InnerText = value;
        else
          xe.SetAttribute(attribute, value);
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
      }
      catch { }
    }
    /// <summary>
    /// 更改符合條件的一條記錄
    /// </summary>
    /// <param name="strXmlPath">XML文件路徑</param>
    /// <param name="Columns">列名數(shù)組</param>
    /// <param name="ColumnValue">列值數(shù)組</param>
    /// <param name="strWhereColumnName">條件列名</param>
    /// <param name="strWhereColumnValue">條件列值</param>
    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();
        ds.ReadXmlSchema(GetXmlFullPath(strXsdPath));//讀XML架構(gòu)，關(guān)系到列的數(shù)據(jù)類型
        ds.ReadXml(GetXmlFullPath(strXmlPath));
        //先判斷行數(shù)
        if (ds.Tables[0].Rows.Count > 0)
        {
          for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
          {
            //如果當(dāng)前記錄為符合Where條件的記錄
            if (ds.Tables[0].Rows[i][strWhereColumnName].ToString().Trim().Equals(strWhereColumnValue))
            {
              //循環(huán)給找到行的各列賦新值
              for (int j = 0; j < Columns.Length; j++)
              {
                ds.Tables[0].Rows[i][Columns[j]] = ColumnValue[j];
              }
              ds.AcceptChanges();           //更新DataSet
              ds.WriteXml(GetXmlFullPath(strXmlPath));//重新寫入XML文件
              return true;
            }
          }
        }
        return false;
      }
      catch (Exception)
      {
        return false;
      }
    }
    #endregion
    #region 刪除數(shù)據(jù)
    /// <summary>
    /// 刪除節(jié)點(diǎn)值
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="attribute">屬性名，非空時(shí)刪除該節(jié)點(diǎn)屬性值，否則刪除節(jié)點(diǎn)值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Delete(path, "/Node", "")
    /// XMLProsess.Delete(path, "/Node", "Attribute")
    public static void Delete(string path, string node)
    {
      try
      {
        XmlDocument doc = XMLLoad(path);
        XmlNode xn = doc.SelectSingleNode(node);
        xn.ParentNode.RemoveChild(xn);
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
      }
      catch { }
    }
    /// <summary>
    /// 刪除數(shù)據(jù)
    /// </summary>
    /// <param name="path">路徑</param>
    /// <param name="node">節(jié)點(diǎn)</param>
    /// <param name="attribute">屬性名，非空時(shí)刪除該節(jié)點(diǎn)屬性值，否則刪除節(jié)點(diǎn)值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Delete(path, "/Node", "")
    /// XMLProsess.Delete(path, "/Node", "Attribute")
    public static void Delete(string path, string node, string attribute)
    {
      try
      {
        XmlDocument doc = XMLLoad(path);
        XmlNode xn = doc.SelectSingleNode(node);
        XmlElement xe = (XmlElement)xn;
        if (attribute.Equals(""))
          xn.ParentNode.RemoveChild(xn);
        else
          xe.RemoveAttribute(attribute);
        doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
      }
      catch { }
    }
    /// <summary>
    /// 刪除所有行
    /// </summary>
    /// <param name="strXmlPath">XML路徑</param>
    public static bool DeleteXmlAllRows(string strXmlPath)
    {
      try
      {
        DataSet ds = new DataSet();
        ds.ReadXml(GetXmlFullPath(strXmlPath));
        if (ds.Tables[0].Rows.Count > 0)
        {
          ds.Tables[0].Rows.Clear();
        }
        ds.WriteXml(GetXmlFullPath(strXmlPath));
        return true;
      }
      catch (Exception)
      {
        return false;
      }
    }
    /// <summary>
    /// 通過刪除DataSet中指定索引行，重寫XML以實(shí)現(xiàn)刪除指定行
    /// </summary>
    /// <param name="iDeleteRow">要?jiǎng)h除的行在DataSet中的Index值</param>
    public static bool DeleteXmlRowByIndex(string strXmlPath, int iDeleteRow)
    {
      try
      {
        DataSet ds = new DataSet();
        ds.ReadXml(GetXmlFullPath(strXmlPath));
        if (ds.Tables[0].Rows.Count > 0)
        {
          ds.Tables[0].Rows[iDeleteRow].Delete();
        }
        ds.WriteXml(GetXmlFullPath(strXmlPath));
        return true;
      }
      catch (Exception)
      {
        return false;
      }
    }
    /// <summary>
    /// 刪除指定列中指定值的行
    /// </summary>
    /// <param name="strXmlPath">XML相對路徑</param>
    /// <param name="strColumn">列名</param>
    /// <param name="ColumnValue">指定值</param>
    public static bool DeleteXmlRows(string strXmlPath, string strColumn, string[] ColumnValue)
    {
      try
      {
        DataSet ds = new DataSet();
        ds.ReadXml(GetXmlFullPath(strXmlPath));
        if (ds.Tables[0].Rows.Count > 0)
        {
          //判斷行多還是刪除的值多，多的for循環(huán)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
  }
}