C# XML *** 作类分享

概述本文实例为大家分享了Android九宫格图片展示的具体代码，供大家参考，具体内容如下

本文实例为大家分享了AndroID九宫格图片展示的具体代码，供大家参考，具体内容如下

XmlHelper

using System.Xml;using System.Data;namespace DotNet.UtilitIEs{ /// <summary> /// Xml的 *** 作公共类 /// </summary>  public class XmlHelper {  #region 字段定义  /// <summary>  /// XML文件的物理路径  /// </summary>  private string _filePath = string.Empty;  /// <summary>  /// Xml文档  /// </summary>  private Xmldocument _xml;  /// <summary>  /// XML的根节点  /// </summary>  private XmlElement _element;  #endregion  #region 构造方法  /// <summary>  /// 实例化XmlHelper对象  /// </summary>  /// <param name="xmlfilePath">Xml文件的相对路径</param>  public XmlHelper(string xmlfilePath)  {   //获取XML文件的绝对路径   _filePath = SysHelper.GetPath(xmlfilePath);  }  #endregion  #region 创建XML的根节点  /// <summary>  /// 创建XML的根节点  /// </summary>  private voID CreateXMLElement()  {   //创建一个XML对象   _xml = new Xmldocument();   if (Dirfile.IsExistfile(_filePath))   {    //加载XML文件    _xml.Load(this._filePath);   }   //为XML的根节点赋值   _element = _xml.documentElement;  }  #endregion  #region 获取指定XPath表达式的节点对象  /// <summary>  /// 获取指定XPath表达式的节点对象  /// </summary>    /// <param name="xPath">XPath表达式,/// 范例1: @"Skill/First/Skillitem",等效于 @"//Skill/First/Skillitem"  /// 范例2: @"table[USERname='a']",[]表示筛选,USERname是table下的一个子节点.  /// 范例3: @"ApplyPost/Item[@itemname='岗位编号']",@itemname是Item节点的属性.  /// </param>  public XmlNode GetNode(string xPath)  {   //创建XML的根节点   CreateXMLElement();   //返回XPath节点   return _element.SelectSingleNode(xPath);  }  #endregion  #region 获取指定XPath表达式节点的值  /// <summary>  /// 获取指定XPath表达式节点的值  /// </summary>  /// <param name="xPath">XPath表达式,@itemname是Item节点的属性.  /// </param>  public string GetValue(string xPath)  {   //创建XML的根节点   CreateXMLElement();   //返回XPath节点的值   return _element.SelectSingleNode(xPath).InnerText;  }  #endregion  #region 获取指定XPath表达式节点的属性值  /// <summary>  /// 获取指定XPath表达式节点的属性值  /// </summary>  /// <param name="xPath">XPath表达式,@itemname是Item节点的属性.  /// </param>  /// <param name="attributename">属性名</param>  public string GetAttributeValue(string xPath,string attributename)  {   //创建XML的根节点   CreateXMLElement();   //返回XPath节点的属性值   return _element.SelectSingleNode(xPath).Attributes[attributename].Value;  }  #endregion  #region 新增节点  /// <summary>  /// 1. 功能：新增节点。  /// 2. 使用条件：将任意节点插入到当前Xml文件中。  /// </summary>    /// <param name="xmlNode">要插入的Xml节点</param>  public voID AppendNode(XmlNode xmlNode)  {   //创建XML的根节点   CreateXMLElement();   //导入节点   XmlNode node = _xml.importNode(xmlNode,true);   //将节点插入到根节点下   _element.AppendChild(node);  }  /// <summary>  /// 1. 功能：新增节点。  /// 2. 使用条件：将DataSet中的第一条记录插入Xml文件中。  /// </summary>    /// <param name="ds">DataSet的实例，该DataSet中应该只有一条记录</param>  public voID AppendNode(DataSet ds)  {   //创建XMLDatadocument对象   XmlDatadocument xmlDatadocument = new XmlDatadocument(ds);   //导入节点   XmlNode node = xmlDatadocument.documentElement.FirstChild;   //将节点插入到根节点下   AppendNode(node);  }  #endregion  #region 删除节点  /// <summary>  /// 删除指定XPath表达式的节点  /// </summary>    /// <param name="xPath">XPath表达式,@itemname是Item节点的属性.  /// </param>  public voID RemoveNode(string xPath)  {   //创建XML的根节点   CreateXMLElement();   //获取要删除的节点   XmlNode node = _xml.SelectSingleNode(xPath);   //删除节点   _element.RemoveChild(node);  }  #endregion //删除节点  #region 保存XML文件  /// <summary>  /// 保存XML文件  /// </summary>    public voID Save()  {   //创建XML的根节点   CreateXMLElement();   //保存XML文件   _xml.Save(this._filePath);  }  #endregion //保存XML文件  #region 静态方法  #region 创建根节点对象  /// <summary>  /// 创建根节点对象  /// </summary>  /// <param name="xmlfilePath">Xml文件的相对路径</param>    private static XmlElement CreateRootElement(string xmlfilePath)  {   //定义变量，表示XML文件的绝对路径   string filePath = "";   //获取XML文件的绝对路径   filePath = SysHelper.GetPath(xmlfilePath);   //创建XMLdocument对象   Xmldocument xmldocument = new Xmldocument();   //加载XML文件   xmldocument.Load(filePath);   //返回根节点   return xmldocument.documentElement;  }  #endregion  #region 获取指定XPath表达式节点的值  /// <summary>  /// 获取指定XPath表达式节点的值  /// </summary>  /// <param name="xmlfilePath">Xml文件的相对路径</param>  /// <param name="xPath">XPath表达式,@itemname是Item节点的属性.  /// </param>  public static string GetValue(string xmlfilePath,string xPath)  {   //创建根对象   XmlElement rootElement = CreateRootElement(xmlfilePath);   //返回XPath节点的值   return rootElement.SelectSingleNode(xPath).InnerText;  }  #endregion  #region 获取指定XPath表达式节点的属性值  /// <summary>  /// 获取指定XPath表达式节点的属性值  /// </summary>  /// <param name="xmlfilePath">Xml文件的相对路径</param>  /// <param name="xPath">XPath表达式,@itemname是Item节点的属性.  /// </param>  /// <param name="attributename">属性名</param>  public static string GetAttributeValue(string xmlfilePath,string xPath,string attributename)  {   //创建根对象   XmlElement rootElement = CreateRootElement(xmlfilePath);   //返回XPath节点的属性值   return rootElement.SelectSingleNode(xPath).Attributes[attributename].Value;  }  #endregion  #endregion  public static voID SetValue(string xmlfilePath,string newtext)  {   //string path = SysHelper.GetPath(xmlfilePath);   //var queryXML = from xmlLog in xelem.Descendants("msg_log")   //    //所有名字为Bin的记录   //    where xmlLog.Element("user").Value == "Bin"   //    select xmlLog;   //foreach (XElement el in queryXML)   //{   // el.Element("user").Value = "liuBin";//开始修改   //}   //xelem.Save(path);  } }}

XmlProcess

using System;using System.Data;using System.IO;using System.Xml;namespace DotNet.UtilitIEs{ public class XMLProcess {  #region 构造函数  public XMLProcess()  { }  public XMLProcess(string strPath)  {   this._XMLPath = strPath;  }  #endregion  #region 公有属性  private string _XMLPath;  public string XMLPath  {   get { return this._XMLPath; }  }  #endregion  #region 私有方法  /// <summary>  /// 导入XML文件  /// </summary>  /// <param name="XMLPath">XML文件路径</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>  /// 导入XML文件  /// </summary>  /// <param name="XMLPath">XML文件路径</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>  /// 返回完整路径  /// </summary>  /// <param name="strPath">Xml的路径</param>  private static string GetXmlFullPath(string strPath)  {   if (strPath.IndexOf(":") > 0)   {    return strPath;   }   else   {    return System.Web.httpContext.Current.Server.MapPath(strPath);   }  }  #endregion  #region 读取数据  /// <summary>  /// 读取指定节点的数据  /// </summary>  /// <param name="node">节点</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>  /// 读取指定路径和节点的串联值  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <param name="attribute">属性名，非空时返回该属性值，否则返回串联值</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>  /// 读取指定路径和节点的属性值  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <param name="attribute">属性名，非空时返回该属性值，否则返回串联值</param>  /// 使用示列:  /// 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>  /// 获取某一节点的所有孩子节点的值  /// </summary>  /// <param name="node">要查询的节点</param>  public string[] ReadAllChildallValue(string node)  {   int i = 0;   string[] str = { };   Xmldocument doc = XMLLoad();   XmlNode xn = doc.SelectSingleNode(node);   XmlNodeList nodeList = xn.ChildNodes; //得到该节点的子节点   if (nodeList.Count > 0)   {    str = new string[nodeList.Count];    foreach (XmlElement el in nodeList)//读元素值    {     str[i] = el.Value;     i++;    }   }   return str;  }  /// <summary>  /// 获取某一节点的所有孩子节点的值  /// </summary>  /// <param name="node">要查询的节点</param>  public XmlNodeList ReadAllChild(string node)  {   Xmldocument doc = XMLLoad();   XmlNode xn = doc.SelectSingleNode(node);   XmlNodeList nodeList = xn.ChildNodes; //得到该节点的子节点   return nodeList;  }  /// <summary>   /// 读取XML返回经排序或筛选后的DataVIEw  /// </summary>  /// <param name="strWhere">筛选条件，如:"name='kgdiwss'"</param>  /// <param name="strSort"> 排序条件，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]); //创建DataVIEw来完成排序或筛选 *** 作     if (strSort != null)    {     dv.sort = strSort; //对DataVIEw中的记录进行排序    }    if (strWhere != null)    {     dv.RowFilter = strWhere; //对DataVIEw中的记录进行筛选，找到我们想要的记录    }    return dv;   }   catch (Exception)   {    return null;   }  }  /// <summary>  /// 读取XML返回DataSet  /// </summary>  /// <param name="strXmlPath">XML文件相对路径</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 插入数据  /// <summary>  /// 插入数据  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <param name="element">元素名，非空时插入新元素，否则在该元素中插入属性</param>  /// <param name="attribute">属性名，非空时插入该元素属性值，否则插入元素值</param>  /// <param name="value">值</param>  /// 使用示列:  /// XMLProsess.Insert(path,"Element","","Value")  /// XMLProsess.Insert(path,"Attribute","Value")  public static voID Insert(string path,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>  /// 插入数据  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <param name="element">元素名，非空时插入新元素，否则在该元素中插入属性</param>  /// <param name="strList">由XML属性名和值组成的二维数组</param>  public static voID Insert(string path,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>  /// 插入一行数据  /// </summary>  /// <param name="strXmlPath">XML文件相对路径</param>  /// <param name="Columns">要插入行的列名数组，如：string[] Columns = {"name","IsMarrIEd"};</param>  /// <param name="ColumnValue">要插入行每列的值数组，如：string[] ColumnValue={"XML大全","false"};</param>  /// <returns>成功返回true,否则返回false</returns>  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();    ds.readxmlSchema(GetXmlFullPath(strXsdpath)); //读XML架构，关系到列的数据类型    ds.readxml(GetXmlFullPath(strXmlPath));    Datatable dt = ds.tables[0];    DaTarow newRow = dt.NewRow();     //在原来的表格基础上创建新行    for (int i = 0; i < Columns.Length; i++)  //循环给一行中的各个列赋值    {     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 修改数据  /// <summary>  /// 修改指定节点的数据  /// </summary>  /// <param name="node">节点</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>  /// 修改指定节点的数据  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <param name="value">值</param>  /// 使用示列:  /// XMLProsess.Insert(path,"Value")  public static voID Update(string path,string value)  {   try   {    Xmldocument doc = XMLLoad(path);    XmlNode xn = doc.SelectSingleNode(node);    xn.InnerText = value;    doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);   }   catch { }  }  /// <summary>  /// 修改指定节点的属性值(静态)  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>  /// <param name="value">值</param>  /// 使用示列:  /// XMLProsess.Insert(path,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>  /// 更改符合条件的一条记录  /// </summary>  /// <param name="strXmlPath">XML文件路径</param>  /// <param name="Columns">列名数组</param>  /// <param name="ColumnValue">列值数组</param>  /// <param name="strWhereColumnname">条件列名</param>  /// <param name="strWhereColumnValue">条件列值</param>  public static bool UpdateXmlRow(string strXmlPath,string[] ColumnValue,string strWhereColumnname,string strWhereColumnValue)  {   try   {    string strXsdpath = strXmlPath.Substring(0,strXmlPath.IndexOf(".")) + ".xsd";    DataSet ds = new DataSet();    ds.readxmlSchema(GetXmlFullPath(strXsdpath));//读XML架构，关系到列的数据类型    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];       }       ds.AcceptChanges();      //更新DataSet       ds.WriteXml(GetXmlFullPath(strXmlPath));//重新写入XML文件       return true;      }     }    }    return false;   }   catch (Exception)   {    return false;   }  }  #endregion  #region 删除数据  /// <summary>  /// 删除节点值  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <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>  /// <param name="value">值</param>  /// 使用示列:  /// XMLProsess.Delete(path,"")  /// XMLProsess.Delete(path,"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>  /// 删除数据  /// </summary>  /// <param name="path">路径</param>  /// <param name="node">节点</param>  /// <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>  /// <param name="value">值</param>  /// 使用示列:  /// XMLProsess.Delete(path,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>  /// 删除所有行  /// </summary>  /// <param name="strXmlPath">XML路径</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>  /// 通过删除DataSet中指定索引行，重写XML以实现删除指定行  /// </summary>  /// <param name="IDeleteRow">要删除的行在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>  /// 删除指定列中指定值的行  /// </summary>  /// <param name="strXmlPath">XML相对路径</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 }}

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