亚洲激情专区-91九色丨porny丨老师-久久久久久久女国产乱让韩-国产精品午夜小视频观看

溫馨提示×

溫馨提示×

您好,登錄后才能下訂單哦!

密碼登錄×
登錄注冊×
其他方式登錄
點擊 登錄注冊 即表示同意《億速云用戶服務條款》

C# XML操作類分享

發布時間:2020-09-27 04:32:30 來源:腳本之家 閱讀:109 作者:孤者自清 欄目:編程語言

本文實例為大家分享了Android九宮格圖片展示的具體代碼,供大家參考,具體內容如下

XmlHelper

using System.Xml;
using System.Data;

namespace DotNet.Utilities
{
 /// <summary>
 /// Xml的操作公共類
 /// </summary> 
 public class XmlHelper
 {
  #region 字段定義
  /// <summary>
  /// XML文件的物理路徑
  /// </summary>
  private string _filePath = string.Empty;
  /// <summary>
  /// Xml文檔
  /// </summary>
  private XmlDocument _xml;
  /// <summary>
  /// XML的根節點
  /// </summary>
  private XmlElement _element;
  #endregion

  #region 構造方法
  /// <summary>
  /// 實例化XmlHelper對象
  /// </summary>
  /// <param name="xmlFilePath">Xml文件的相對路徑</param>
  public XmlHelper(string xmlFilePath)
  {
   //獲取XML文件的絕對路徑
   _filePath = SysHelper.GetPath(xmlFilePath);
  }
  #endregion

  #region 創建XML的根節點
  /// <summary>
  /// 創建XML的根節點
  /// </summary>
  private void CreateXMLElement()
  {

   //創建一個XML對象
   _xml = new XmlDocument();

   if (DirFile.IsExistFile(_filePath))
   {
    //加載XML文件
    _xml.Load(this._filePath);
   }

   //為XML的根節點賦值
   _element = _xml.DocumentElement;
  }
  #endregion

  #region 獲取指定XPath表達式的節點對象
  /// <summary>
  /// 獲取指定XPath表達式的節點對象
  /// </summary>  
  /// <param name="xPath">XPath表達式,
  /// 范例1: @"Skill/First/SkillItem", 等效于 @"http://Skill/First/SkillItem"
  /// 范例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
  /// 范例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
  /// </param>
  public XmlNode GetNode(string xPath)
  {
   //創建XML的根節點
   CreateXMLElement();

   //返回XPath節點
   return _element.SelectSingleNode(xPath);
  }
  #endregion

  #region 獲取指定XPath表達式節點的值
  /// <summary>
  /// 獲取指定XPath表達式節點的值
  /// </summary>
  /// <param name="xPath">XPath表達式,
  /// 范例1: @"Skill/First/SkillItem", 等效于 @"http://Skill/First/SkillItem"
  /// 范例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
  /// 范例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
  /// </param>
  public string GetValue(string xPath)
  {
   //創建XML的根節點
   CreateXMLElement();

   //返回XPath節點的值
   return _element.SelectSingleNode(xPath).InnerText;
  }
  #endregion

  #region 獲取指定XPath表達式節點的屬性值
  /// <summary>
  /// 獲取指定XPath表達式節點的屬性值
  /// </summary>
  /// <param name="xPath">XPath表達式,
  /// 范例1: @"Skill/First/SkillItem", 等效于 @"http://Skill/First/SkillItem"
  /// 范例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
  /// 范例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
  /// </param>
  /// <param name="attributeName">屬性名</param>
  public string GetAttributeValue(string xPath, string attributeName)
  {
   //創建XML的根節點
   CreateXMLElement();

   //返回XPath節點的屬性值
   return _element.SelectSingleNode(xPath).Attributes[attributeName].Value;
  }
  #endregion

  #region 新增節點
  /// <summary>
  /// 1. 功能:新增節點。
  /// 2. 使用條件:將任意節點插入到當前Xml文件中。
  /// </summary>  
  /// <param name="xmlNode">要插入的Xml節點</param>
  public void AppendNode(XmlNode xmlNode)
  {
   //創建XML的根節點
   CreateXMLElement();

   //導入節點
   XmlNode node = _xml.ImportNode(xmlNode, true);

   //將節點插入到根節點下
   _element.AppendChild(node);
  }

  /// <summary>
  /// 1. 功能:新增節點。
  /// 2. 使用條件:將DataSet中的第一條記錄插入Xml文件中。
  /// </summary>  
  /// <param name="ds">DataSet的實例,該DataSet中應該只有一條記錄</param>
  public void AppendNode(DataSet ds)
  {
   //創建XmlDataDocument對象
   XmlDataDocument xmlDataDocument = new XmlDataDocument(ds);

   //導入節點
   XmlNode node = xmlDataDocument.DocumentElement.FirstChild;

   //將節點插入到根節點下
   AppendNode(node);
  }
  #endregion

  #region 刪除節點
  /// <summary>
  /// 刪除指定XPath表達式的節點
  /// </summary>  
  /// <param name="xPath">XPath表達式,
  /// 范例1: @"Skill/First/SkillItem", 等效于 @"http://Skill/First/SkillItem"
  /// 范例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
  /// 范例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
  /// </param>
  public void RemoveNode(string xPath)
  {
   //創建XML的根節點
   CreateXMLElement();

   //獲取要刪除的節點
   XmlNode node = _xml.SelectSingleNode(xPath);

   //刪除節點
   _element.RemoveChild(node);
  }
  #endregion //刪除節點

  #region 保存XML文件
  /// <summary>
  /// 保存XML文件
  /// </summary>  
  public void Save()
  {
   //創建XML的根節點
   CreateXMLElement();

   //保存XML文件
   _xml.Save(this._filePath);
  }
  #endregion //保存XML文件

  #region 靜態方法

  #region 創建根節點對象
  /// <summary>
  /// 創建根節點對象
  /// </summary>
  /// <param name="xmlFilePath">Xml文件的相對路徑</param>  
  private static XmlElement CreateRootElement(string xmlFilePath)
  {
   //定義變量,表示XML文件的絕對路徑
   string filePath = "";

   //獲取XML文件的絕對路徑
   filePath = SysHelper.GetPath(xmlFilePath);

   //創建XmlDocument對象
   XmlDocument xmlDocument = new XmlDocument();
   //加載XML文件
   xmlDocument.Load(filePath);

   //返回根節點
   return xmlDocument.DocumentElement;
  }
  #endregion

  #region 獲取指定XPath表達式節點的值
  /// <summary>
  /// 獲取指定XPath表達式節點的值
  /// </summary>
  /// <param name="xmlFilePath">Xml文件的相對路徑</param>
  /// <param name="xPath">XPath表達式,
  /// 范例1: @"Skill/First/SkillItem", 等效于 @"http://Skill/First/SkillItem"
  /// 范例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
  /// 范例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
  /// </param>
  public static string GetValue(string xmlFilePath, string xPath)
  {
   //創建根對象
   XmlElement rootElement = CreateRootElement(xmlFilePath);

   //返回XPath節點的值
   return rootElement.SelectSingleNode(xPath).InnerText;
  }
  #endregion

  #region 獲取指定XPath表達式節點的屬性值
  /// <summary>
  /// 獲取指定XPath表達式節點的屬性值
  /// </summary>
  /// <param name="xmlFilePath">Xml文件的相對路徑</param>
  /// <param name="xPath">XPath表達式,
  /// 范例1: @"Skill/First/SkillItem", 等效于 @"http://Skill/First/SkillItem"
  /// 范例2: @"Table[USERNAME='a']" , []表示篩選,USERNAME是Table下的一個子節點.
  /// 范例3: @"ApplyPost/Item[@itemName='崗位編號']",@itemName是Item節點的屬性.
  /// </param>
  /// <param name="attributeName">屬性名</param>
  public static string GetAttributeValue(string xmlFilePath, string xPath, string attributeName)
  {
   //創建根對象
   XmlElement rootElement = CreateRootElement(xmlFilePath);

   //返回XPath節點的屬性值
   return rootElement.SelectSingleNode(xPath).Attributes[attributeName].Value;
  }
  #endregion

  #endregion

  public static void SetValue(string xmlFilePath, string xPath, string newtext)
  {
   //string path = SysHelper.GetPath(xmlFilePath);
   //var queryXML = from xmlLog in xelem.Descendants("msg_log")
   //    //所有名字為Bin的記錄
   //    where xmlLog.Element("user").Value == "Bin"
   //    select xmlLog;

   //foreach (XElement el in queryXML)
   //{
   // el.Element("user").Value = "LiuBin";//開始修改
   //}
   //xelem.Save(path);
  }
 }
}

XmlProcess

using System;
using System.Data;
using System.IO;
using System.Xml;

namespace DotNet.Utilities
{
 public class XMLProcess
 {
  #region 構造函數
  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 讀取數據
  /// <summary>
  /// 讀取指定節點的數據
  /// </summary>
  /// <param name="node">節點</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>
  /// 讀取指定路徑和節點的串聯值
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="attribute">屬性名,非空時返回該屬性值,否則返回串聯值</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>
  /// 讀取指定路徑和節點的屬性值
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="attribute">屬性名,非空時返回該屬性值,否則返回串聯值</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>
  /// 獲取某一節點的所有孩子節點的值
  /// </summary>
  /// <param name="node">要查詢的節點</param>
  public string[] ReadAllChildallValue(string node)
  {
   int i = 0;
   string[] str = { };
   XmlDocument doc = XMLLoad();
   XmlNode xn = doc.SelectSingleNode(node);
   XmlNodeList nodelist = xn.ChildNodes; //得到該節點的子節點
   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>
  /// 獲取某一節點的所有孩子節點的值
  /// </summary>
  /// <param name="node">要查詢的節點</param>
  public XmlNodeList ReadAllChild(string node)
  {
   XmlDocument doc = XMLLoad();
   XmlNode xn = doc.SelectSingleNode(node);
   XmlNodeList nodelist = xn.ChildNodes; //得到該節點的子節點
   return nodelist;
  }

  /// <summary> 
  /// 讀取XML返回經排序或篩選后的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中的記錄進行排序
    }
    if (strWhere != null)
    {
     dv.RowFilter = strWhere; //對DataView中的記錄進行篩選,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 插入數據
  /// <summary>
  /// 插入數據
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="element">元素名,非空時插入新元素,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>
  /// 插入數據
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="element">元素名,非空時插入新元素,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>
  /// 插入一行數據
  /// </summary>
  /// <param name="strXmlPath">XML文件相對路徑</param>
  /// <param name="Columns">要插入行的列名數組,如:string[] Columns = {"name","IsMarried"};</param>
  /// <param name="ColumnValue">要插入行每列的值數組,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
   {
    //根據傳入的XML路徑得到.XSD的路徑,兩個文件放在同一個目錄下
    string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";
    DataSet ds = new DataSet();
    ds.ReadXmlSchema(GetXmlFullPath(strXsdPath)); //讀XML架構,關系到列的數據類型
    ds.ReadXml(GetXmlFullPath(strXmlPath));
    DataTable dt = ds.Tables[0];
    DataRow newRow = dt.NewRow();     //在原來的表格基礎上創建新行
    for (int i = 0; i < Columns.Length; i++)  //循環給一行中的各個列賦值
    {
     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 修改數據
  /// <summary>
  /// 修改指定節點的數據
  /// </summary>
  /// <param name="node">節點</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>
  /// 修改指定節點的數據
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</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>
  /// 修改指定節點的屬性值(靜態)
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="attribute">屬性名,非空時修改該節點屬性值,否則修改節點值</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">列名數組</param>
  /// <param name="ColumnValue">列值數組</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,關系到列的數據類型
    ds.ReadXml(GetXmlFullPath(strXmlPath));

    //先判斷行數
    if (ds.Tables[0].Rows.Count > 0)
    {
     for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
     {
      //如果當前記錄為符合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 刪除數據
  /// <summary>
  /// 刪除節點值
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="attribute">屬性名,非空時刪除該節點屬性值,否則刪除節點值</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>
  /// 刪除數據
  /// </summary>
  /// <param name="path">路徑</param>
  /// <param name="node">節點</param>
  /// <param name="attribute">屬性名,非空時刪除該節點屬性值,否則刪除節點值</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以實現刪除指定行
  /// </summary>
  /// <param name="iDeleteRow">要刪除的行在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
 }
}

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持億速云。

向AI問一下細節

免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。

AI

京山县| 扶绥县| 开化县| 平果县| 佛山市| 浮山县| 万盛区| 双鸭山市| 新津县| 东港市| 商城县| 德令哈市| 威海市| 确山县| 乡城县| 阿荣旗| 巫山县| 新建县| 湖口县| 裕民县| 江安县| 克拉玛依市| 油尖旺区| 科技| 新平| 乐至县| 田阳县| 阿荣旗| 靖边县| 巫溪县| 集安市| 波密县| 建瓯市| 扶绥县| 灌云县| 布拖县| 浙江省| 西平县| 宣威市| 商都县| 上饶市|