c#中操纵XML文件

1using System;
  2using System.Xml;
  3using System.Web;
  4namespace MX.XML
  5{
  6    /**//// <summary>
  7    /// XML核心类:
  8    /// 必需用XPath表达式来获取相应节点
  9    /// </summary>
 10    public class Core
 11    {
 12        变量-----------------------------------------------------------#region 变量-----------------------------------------------------------
 13        /**//// <summary>
 14        /// xml文件所在路径类型
 15        /// </summary>
 16        /// <remarks>xml文件所在路径类型</remarks>
 17        public enum enumXmlPathType
 18        {
 19            /**//// <summary>
 20            /// 绝对路径
 21            /// </summary>
 22            AbsolutePath,
 23            /**//// <summary>
 24            /// 虚拟路径
 25            /// </summary>
 26            VirtualPath
 27        }
 28
 29        private string xmlFilePath;
 30        private enumXmlPathType xmlFilePathType;
 31        private XmlDocument xmlDoc = new XmlDocument();
 32        #endregion
 33
 34        属性-----------------------------------------------------------#region 属性-----------------------------------------------------------
 35        /**//// <summary>
 36        /// 文件路径
 37        /// </summary>
 38        /// <remarks>文件路径</remarks>
 39        public string XmlFilePath
 40        {
 41            get
 42            {
 43                return this.xmlFilePath;
 44            }
 45            set
 46            {
 47                xmlFilePath = value;
 48
 49            }
 50        }
 51
 52        /**//// <summary>
 53        /// 文件路径类型
 54        /// </summary>
 55        public enumXmlPathType XmlFilePathTyp
 56        {
 57            set
 58            {
 59                xmlFilePathType = value;
 60            }
 61        }
 62        #endregion
 63
 64        构造函数-------------------------------------------------------#region 构造函数-------------------------------------------------------
 65        /**//// <summary>
 66        /// 构造函数
 67        /// </summary>
 68        /// <param >文件路径</param>
 69        public Core(string tempXmlFilePath)
 70        {
 71            this.xmlFilePathType = enumXmlPathType.VirtualPath;
 72            this.xmlFilePath = tempXmlFilePath;
 73            GetXmlDocument();
 74            //xmlDoc.Load( xmlFilePath ) ;
 75        }
 76
 77        /**//// <summary>
 78        /// 构造函数
 79        /// </summary>
 80        /// <param >文件路径</param>
 81        /// <param >类型</param>
 82        public Core(string tempXmlFilePath, enumXmlPathType tempXmlFilePathType)
 83        {
 84            this.xmlFilePathType = tempXmlFilePathType;
 85            this.xmlFilePath = tempXmlFilePath;
 86            GetXmlDocument();
 87        }
 88
 89        /**////<summary>
 90        ///获取XmlDocument实体类
 91        ///</summary>    
 92        /// <returns>指定的XML描述文件的一个xmldocument实例</returns>
 93        private XmlDocument GetXmlDocument()
 94        {
 95            XmlDocument doc = null;
 96
 97            if (this.xmlFilePathType == enumXmlPathType.AbsolutePath)
 98            {
 99                doc = GetXmlDocumentFromFile(xmlFilePath);
100            }
101            else if (this.xmlFilePathType == enumXmlPathType.VirtualPath)
102            {
103                doc = GetXmlDocumentFromFile(HttpContext.Current.Server.MapPath(xmlFilePath));
104            }
105            return doc;
106        }
107
108        private XmlDocument GetXmlDocumentFromFile(string tempXmlFilePath)
109        {
110            string xmlFileFullPath = tempXmlFilePath;
111            xmlDoc.Load(xmlFileFullPath);
112            //定义事件处理
113            xmlDoc.NodeChanged += new XmlNodeChangedEventHandler(this.nodeUpdateEvent);
114            xmlDoc.NodeInserted += new XmlNodeChangedEventHandler(this.nodeInsertEvent);
115            xmlDoc.NodeRemoved += new XmlNodeChangedEventHandler(this.nodeDeleteEvent);
116            return xmlDoc;
117        }
118
119        #endregion
120
121        获取所有指定名称的节点#region 获取所有指定名称的节点
122        /**//// <summary>
123        /// 功能:
124        /// 获取所有指定名称的节点(XmlNodeList)
125        /// </summary>
126        /// <param >节点名称</param>
127        public XmlNodeList GetXmlNodeList(string strNode)
128        {
129            XmlNodeList strReturn = null;
130            try
131            {
132                //根据指定路径获取节点
133                XmlNodeList xmlNode = xmlDoc.SelectNodes(strNode);
134                if (!(xmlNode == null))
135                {
136                    strReturn = xmlNode;
137                }
138            }
139            catch (XmlException xmle)
140            {
141                throw xmle;
142            }
143            return strReturn;
144        }
145        #endregion
146
147        读取指定节点的指定属性值---------------------------------------#region 读取指定节点的指定属性值---------------------------------------
148        /**//// <summary>
149        /// 功能:
150        /// 读取指定节点的指定属性值(Value)
151        /// </summary>
152        /// <param >节点名称</param>
153        /// <param >此节点的属性</param>
154        /// <returns></returns>
155        public string GetXmlNodeAttributeValue(string strNode, string strAttribute)
156        {
157            string strReturn = "";
158            try
159            {
160                //根据指定路径获取节点
161                XmlNode xmlNode = xmlDoc.SelectSingleNode(strNode);             
162                if (!(xmlNode == null))
163                {
164                    strReturn = xmlNode.Attributes.GetNamedItem(strAttribute).Value;
165
166                    /**/////获取节点的属性，并循环取出需要的属性值
167                    //XmlAttributeCollection xmlAttr = xmlNode.Attributes;
168                    //for (int i = 0; i < xmlAttr.Count; i++)
169                    //{
170                    //    if (xmlAttr.Item(i).Name == strAttribute)
171                    //    {
172                    //        strReturn = xmlAttr.Item(i).Value;
173                    //        break;
174                    //    }
175                    //}
176                }
177            }
178            catch (XmlException xmle)
179            {
180                throw xmle;
181            }
182            return strReturn;
183        }
184        #endregion
185
186        读取指定节点的值-----------------------------------------------#region 读取指定节点的值-----------------------------------------------
187        /**//// <summary>
188        /// 功能:
189        /// 读取指定节点的值(InnerText)
190        /// </summary>
191        /// <param >节点名称</param>
192        /// <returns></returns>
193        public string GetXmlNodeValue(string strNode)
194        {
195            string strReturn = String.Empty;
196            try
197            {
198                //根据路径获取节点
199                XmlNode xmlNode = xmlDoc.SelectSingleNode(strNode);
200                if (!(xmlNode == null))
201                    strReturn = xmlNode.InnerText;
202            }
203            catch (XmlException xmle)
204            {
205                throw xmle;
206            }
207            return strReturn;
208        }
209        #endregion
210
211        设置节点值-----------------------------------------------------#region 设置节点值-----------------------------------------------------
212        /**//// <summary>
213        /// 功能:
214        /// 设置节点值(InnerText)
215        /// </summary>
216        /// <param >节点的名称</param>
217        /// <param >节点值</param>
218        public void SetXmlNodeValue(string xmlNodePath, string xmlNodeValue)
219        {
220            try
221            {
222                //可以批量为符合条件的节点进行付值
223                XmlNodeList xmlNode = this.xmlDoc.SelectNodes(xmlNodePath);
224                if (!(xmlNode == null))
225                {
226                    foreach (XmlNode xn in xmlNode)
227                    {
228                        xn.InnerText = xmlNodeValue;
229                    }
230                }
231                /**//**/
232                /**//*
233             * 根据指定路径获取节点
234            XmlNode xmlNode = xmlDoc.SelectSingleNode(xmlNodePath) ;            
235            //设置节点值
236            if (!(xmlNode==null))
237                xmlNode.InnerText = xmlNodeValue ;*/
238            }
239            catch (XmlException xmle)
240            {
241                throw xmle;
242            }
243        }
244        #endregion
245
246        设置节点的属性值-----------------------------------------------#region 设置节点的属性值-----------------------------------------------
247        /**//// <summary>
248        /// 功能:
249        /// 设置节点的属性值    
250        /// </summary>
251        /// <param >节点名称</param>
252        /// <param >属性名称</param>
253        /// <param >属性值</param>
254        public void SetXmlNodeAttributeValue(string xmlNodePath, string xmlNodeAttribute, string xmlNodeAttributeValue)
255        {
256            try
257            {
258                //可以批量为符合条件的节点的属性付值
259                XmlNodeList xmlNode = this.xmlDoc.SelectNodes(xmlNodePath);
260                if (!(xmlNode == null))
261                {
262                    foreach (XmlNode xn in xmlNode)
263                    {
264                        XmlAttributeCollection xmlAttr = xn.Attributes;
265                        for (int i = 0; i < xmlAttr.Count; i++)
266                        {
267                            if (xmlAttr.Item(i).Name == xmlNodeAttribute)
268                            {
269                                xmlAttr.Item(i).Value = xmlNodeAttributeValue;
270                                break;
271                            }
272                        }
273                    }
274                }
275            }
276            catch (XmlException xmle)
277            {
278                throw xmle;
279            }
280        }
281        #endregion
282
283        添加-----------------------------------------------------------#region 添加-----------------------------------------------------------
284        /**//// <summary>
285        /// 获取XML文件的根元素
286        /// </summary>
287        public XmlNode GetXmlRoot()
288        {
289            return xmlDoc.DocumentElement;
290        }
291
292        /**//// <summary>
293        /// 在根节点下添加父节点
294        /// </summary>
295        public void AddParentNode(string parentNode)
296        {
297            try
298            {
299                XmlNode root = GetXmlRoot();
300                XmlNode parentXmlNode = xmlDoc.CreateElement(parentNode);
301                root.AppendChild(parentXmlNode);
302            }
303            catch (XmlException xmle)
304            {
305                throw xmle;
306            }
307        }
308
309        /**//// <summary>
310        /// 向一个已经存在的父节点中插入一个子节点,并返回子节点.
311        /// </summary>
312        /// <param >父节点</param>
313        /// <param >字节点名称</param>
314        public XmlNode AddChildNode(string parentNodePath, string childnodename)
315        {
316            XmlNode childXmlNode = null;
317            try
318            {
319                XmlNode parentXmlNode = xmlDoc.SelectSingleNode(parentNodePath);
320                if (!((parentXmlNode) == null))//如果此节点存在
321                {
322                    childXmlNode = xmlDoc.CreateElement(childnodename);
323                    parentXmlNode.AppendChild(childXmlNode);
324                }
325                else
326                {//如果不存在就放父节点添加
327                    this.GetXmlRoot().AppendChild(childXmlNode);
328                }
329            }
330            catch (XmlException xmle)
331            {
332                throw xmle;
333            }
334            return childXmlNode;
335        }
336        /**//// <summary>
337        /// 向一个已经存在的父节点中插入一个子节点,并添加一个属性
338        /// </summary>
339        public void AddChildNode(string parentNodePath, string childnodename, string NodeAttribute, string NodeAttributeValue)
340        {
341            try
342            {
343                XmlNode parentXmlNode = xmlDoc.SelectSingleNode(parentNodePath);
344                XmlNode childXmlNode = null;
345                if (!((parentXmlNode) == null))//如果此节点存在
346                {
347                    childXmlNode = xmlDoc.CreateElement(childnodename);
348
349                    //添加属性
350                    XmlAttribute nodeAttribute = this.xmlDoc.CreateAttribute(NodeAttribute);
351                    nodeAttribute.Value = NodeAttributeValue;
352                    childXmlNode.Attributes.Append(nodeAttribute);
353
354                    parentXmlNode.AppendChild(childXmlNode);
355                }
356                else
357                {//如果不存在就放父节点添加
358                    this.GetXmlRoot().AppendChild(childXmlNode);
359                }
360            }
361            catch (XmlException xmle)
362            {
363                throw xmle;
364            }
365        }
366
367        /**//// <summary>
368        /// 向一个节点添加属性,值为空
369        /// </summary>
370        /// <param >节点路径</param>
371        /// <param >属性名</param>
372        public void AddAttribute(string NodePath, string NodeAttribute)
373        {
374            privateAddAttribute(NodePath, NodeAttribute, "");
375        }
376        /**//// <summary>
377        /// 向一个节点添加属性,并赋值***
378        /// </summary>
379        public void AddAttribute(XmlNode childXmlNode, string NodeAttribute, string NodeAttributeValue)
380        {
381            XmlAttribute nodeAttribute = this.xmlDoc.CreateAttribute(NodeAttribute);
382            nodeAttribute.Value = NodeAttributeValue;
383            childXmlNode.Attributes.Append(nodeAttribute);
384        }
385
386        /**//// <summary>
387        /// 向一个节点添加属性
388        /// </summary>
389        /// <param >节点路径</param>
390        /// <param >属性名</param>
391        /// <param >属性值</param>
392        private void privateAddAttribute(string NodePath, string NodeAttribute, string NodeAttributeValue)
393        {
394            try
395            {
396                XmlNode nodePath = xmlDoc.SelectSingleNode(NodePath);
397                if (!(nodePath == null))
398                {
399                    XmlAttribute nodeAttribute = this.xmlDoc.CreateAttribute(NodeAttribute);
400                    nodeAttribute.Value = NodeAttributeValue;
401                    nodePath.Attributes.Append(nodeAttribute);
402                }
403            }
404            catch (XmlException xmle)
405            {
406                throw xmle;
407            }
408        }
409        /**//// <summary>
410        ///  向一个节点添加属性,并赋值
411        /// </summary>
412        /// <param >节点</param>
413        /// <param >属性名</param>
414        /// <param >属性值</param>
415        public void AddAttribute(string NodePath, string NodeAttribute, string NodeAttributeValue)
416        {
417            privateAddAttribute(NodePath, NodeAttribute, NodeAttributeValue);
418        }
419        #endregion
420
421        删除-----------------------------------------------------------#region 删除-----------------------------------------------------------
422        /**//// <summary>
423        /// 删除节点的一个属性
424        /// </summary>
425        /// <param >节点所在的xpath表达式</param>
426        /// <param >属性名</param>
427        public void DeleteAttribute(string NodePath, string NodeAttribute)
428        {
429            XmlNodeList nodePath = this.xmlDoc.SelectNodes(NodePath);
430            if (!(nodePath == null))
431            {
432                foreach (XmlNode tempxn in nodePath)
433                {
434                    XmlAttributeCollection xmlAttr = tempxn.Attributes;
435                    for (int i = 0; i < xmlAttr.Count; i++)
436                    {
437                        if (xmlAttr.Item(i).Name == NodeAttribute)
438                        {
439                            tempxn.Attributes.RemoveAt(i);
440                            break;
441                        }
442                    }
443                }
444            }
445        }
446
447        /**//// <summary>
448        /// 删除节点的一个属性,当其属性值等于给定的值时
449        /// </summary>
450        /// <param >节点所在的xpath表达式</param>
451        /// <param >属性</param>
452        /// <param >值</param>
453        public void DeleteAttribute(string NodePath, string NodeAttribute, string NodeAttributeValue)
454        {
455            XmlNodeList nodePath = this.xmlDoc.SelectNodes(NodePath);
456            if (!(nodePath == null))
457            {
458                foreach (XmlNode tempxn in nodePath)
459                {
460                    XmlAttributeCollection xmlAttr = tempxn.Attributes;
461                    for (int i = 0; i < xmlAttr.Count; i++)
462                    {
463                        if (xmlAttr.Item(i).Name == NodeAttribute && xmlAttr.Item(i).Value == NodeAttributeValue)
464                        {
465                            tempxn.Attributes.RemoveAt(i);
466                            break;
467                        }
468                    }
469                }
470            }
471        }
472        /**//// <summary>
473        /// 删除节点
474        /// </summary>
475        /// <param ></param>
476        /// <remarks></remarks>
477        public void DeleteXmlNode(string tempXmlNode)
478        {
479            XmlNodeList nodePath = this.xmlDoc.SelectNodes(tempXmlNode);
480            if (!(nodePath == null))
481            {
482                foreach (XmlNode xn in nodePath)
483                {
484                    xn.ParentNode.RemoveChild(xn);
485                }
486            }
487        }
488
489        #endregion
490
491        XML文档事件----------------------------------------------------#region XML文档事件----------------------------------------------------
492        /**//// <summary>
493        /// 节点插入事件
494        /// </summary>
495        /// <param ></param>
496        /// <param ></param>
497        private void nodeInsertEvent(Object src, XmlNodeChangedEventArgs args)
498        {
499            //保存设置
500            SaveXmlDocument();
501        }
502        /**//// <summary>
503        /// 节点删除事件
504        /// </summary>
505        /// <param ></param>
506        /// <param ></param>
507        private void nodeDeleteEvent(Object src, XmlNodeChangedEventArgs args)
508        {
509            //保存设置
510            SaveXmlDocument();
511        }
512        /**//// <summary>
513        /// 节点更新事件
514        /// </summary>
515        /// <param ></param>
516        /// <param ></param>
517        private void nodeUpdateEvent(Object src, XmlNodeChangedEventArgs args)
518        {
519            //保存设置
520            SaveXmlDocument();
521        }
522        #endregion
523
524        保存XML文件----------------------------------------------------#region 保存XML文件----------------------------------------------------
525        /**//// <summary>
526        /// 功能: 
527        /// 保存XML文件
528        /// </summary>
529        public void SaveXmlDocument()
530        {
531            try
532            {
533                //保存设置的结果
534                if (this.xmlFilePathType == enumXmlPathType.AbsolutePath)
535                {
536                    Savexml(xmlFilePath);
537                }
538                else if (this.xmlFilePathType == enumXmlPathType.VirtualPath)
539                {
540                    Savexml(HttpContext.Current.Server.MapPath(xmlFilePath));
541                }
542            }
543            catch (XmlException xmle)
544            {
545                throw xmle;
546            }
547        }
548
549        /**//// <summary>
550        /// 功能: 
551        /// 保存XML文件    
552        /// </summary>
553        public void SaveXmlDocument(string tempXMLFilePath)
554        {
555            try
556            {
557                //保存设置的结果
558                Savexml(tempXMLFilePath);
559            }
560            catch (XmlException xmle)
561            {
562                throw xmle;
563            }
564        }
565        /**//// <summary>
566        /// 
567        /// </summary>
568        /// <param ></param>
569        private void Savexml(string filepath)
570        {
571            xmlDoc.Save(filepath);
572        }
573
574        #endregion
575
576    }
577
578}
579