.net操纵xml文件类(c#)_asp.net技巧2（转）
306 /**//// <summary>
307 /// 向一个已经存在的父节点中插入一个子节点
308 /// </summary>
309 /// <param name="parentNodePath">父节点</param>
310 /// <param name="childNodePath">字节点名称</param>
311 public void AddChildNode( string parentNodePath,string childnodename )
312 {
313 try
314 {
315 XmlNode parentXmlNode = xmlDoc.SelectSingleNode(parentNodePath) ;
316 if(!((parentXmlNode)==null))//如果此节点存在
317 {
318 XmlNode childXmlNode = xmlDoc.CreateElement(childnodename) ;
319 parentXmlNode.AppendChild( childXmlNode ) ;
320 }
321 else{//如果不存在就放父节点添加
322 //this.GetXmlRoot().AppendChild(childXmlNode);
323 }
324
325 }
326 catch(XmlException xmle)
327 {
328 throw xmle;
329 }
330 }
331
332 /**//// <summary>
333 /// 向一个节点添加属性
334 /// </summary>
335 /// <param name="NodePath">节点路径</param>
336 /// <param name="NodeAttribute">属性名</param>
337 public void AddAttribute( string NodePath , string NodeAttribute)
338 {
339 privateAddAttribute(NodePath,NodeAttribute,"");
340 }
341 /**//// <summary>
342 ///
343 /// </summary>
344 /// <param name="NodePath"></param>
345 /// <param name="NodeAttribute"></param>
346 /// <param name="NodeAttributeValue"></param>
347 private void privateAddAttribute( string NodePath , string NodeAttribute,string NodeAttributeValue)
348 {
349 try
350 {
351 XmlNode nodePath = xmlDoc.SelectSingleNode( NodePath ) ;
352 if (!(nodePath==null))
353 {
354 XmlAttribute nodeAttribute = this.xmlDoc.CreateAttribute(NodeAttribute);
355 nodeAttribute.Value=NodeAttributeValue;
356 nodePath.Attributes.Append(nodeAttribute) ;
357 }
358 }
359 catch(XmlException xmle)
360 {
361 throw xmle;
362 }
363 }
364 /**//// <summary>
365 /// 向一个节点添加属性,并付值
366 /// </summary>
367 /// <param name="NodePath">节点</param>
368 /// <param name="NodeAttribute">属性名</param>
369 /// <param name="NodeAttributeValue">属性值</param>
370 public void AddAttribute( string NodePath , string NodeAttribute,string NodeAttributeValue)
371 {
372 privateAddAttribute(NodePath,NodeAttribute,NodeAttributeValue);
373 }
374 #endregion
375
376 删除#region 删除
377 /**//// <summary>
378 /// 删除节点的一个属性
379 /// </summary>
380 /// <param name="NodePath">节点所在的xpath表达式</param>
381 /// <param name="NodeAttribute">属性名</param>
382 public void DeleteAttribute( string NodePath , string NodeAttribute)
383 {
384 XmlNodeList nodePath =this.xmlDoc.SelectNodes(NodePath);
385 if (!(nodePath==null))
386 {
387 foreach (XmlNode tempxn in nodePath)
388 {
389 XmlAttributeCollection xmlAttr = tempxn.Attributes ;
390 for(int i=0 ; i<xmlAttr.Count ; i++)
391 {
392 if ( xmlAttr.Item(i).Name == NodeAttribute)
393 {
394 tempxn.Attributes.RemoveAt(i);
395 break ;
396 }
397 }
398 }
399 }
400 }
401
402 /**//// <summary>
403 /// 删除节点,当其属性值等于给定的值时
404 /// </summary>
405 /// <param name="NodePath">节点所在的xpath表达式</param>
406 /// <param name="NodeAttribute">属性</param>
407 /// <param name="NodeAttributeValue">值</param>
408 public void DeleteAttribute( string NodePath , string NodeAttribute , string NodeAttributeValue)
409 {
410 XmlNodeList nodePath =this.xmlDoc.SelectNodes(NodePath);
411 if (!(nodePath==null))
412 {
413 foreach (XmlNode tempxn in nodePath)
414 {
415 XmlAttributeCollection xmlAttr = tempxn.Attributes ;
416 for(int i=0 ; i<xmlAttr.Count ; i++)
417 {
418 if ( xmlAttr.Item(i).Name == NodeAttribute && xmlAttr.Item(i).Value==NodeAttributeValue)
419 {
420 tempxn.Attributes.RemoveAt(i);
421 break ;
422 }
423 }
424 }
425 }
426 }
427 /**//// <summary>
428 /// 删除节点
429 /// </summary>
430 /// <param name="tempXmlNode"></param>
431 /// <remarks></remarks>
432 public void DeleteXmlNode(string tempXmlNode){
433 XmlNodeList nodePath =this.xmlDoc.SelectNodes(tempXmlNode);
434 if (!(nodePath==null))
435 {
436 foreach(XmlNode xn in nodePath)
437 {
438 xn.ParentNode.RemoveChild(xn);
439 }
440 }
441 }
442
443 #endregion
444
445 XML文档事件#region XML文档事件
446 /**//// <summary>
447 ///
448 /// </summary>
449 /// <param name="src"></param>
450 /// <param name="args"></param>
451 private void nodeInsertEvent(Object src, XmlNodeChangedEventArgs args)
452 {
453 //保存设置
454 SaveXmlDocument();
455 }
456 /**//// <summary>
457 ///
458 /// </summary>
459 /// <param name="src"></param>
460 /// <param name="args"></param>
461 private void nodeDeleteEvent(Object src, XmlNodeChangedEventArgs args)
462 {
463 //保存设置
464 SaveXmlDocument();
465 }
466 /**//// <summary>
467 ///
468 /// </summary>
469 /// <param name="src"></param>
470 /// <param name="args"></param>
471 private void nodeUpdateEvent(Object src, XmlNodeChangedEventArgs args)
472 {
473 //保存设置
474 SaveXmlDocument();
475 }
476 #endregion
477
478 保存XML文件#region 保存XML文件
479 /**//// <summary>
480 /// 功能:
481 /// 保存XML文件
482 ///
483 /// </summary>
484 public void SaveXmlDocument()
485 {
486 try
487 {
488 //保存设置的结果
489 if( this.xmlFilePathType == enumXmlPathType.AbsolutePath )
490 {
491 Savexml( xmlFilePath ) ;
492 }
493 else if( this.xmlFilePathType == enumXmlPathType.VirtualPath )
494 {
495 Savexml(HttpContext.Current.Server.MapPath(xmlFilePath)) ;
496 }
497 }
498 catch(XmlException xmle)
499 {
500 throw xmle;
501 }
502 }
503
504 /**//// <summary>
505 /// 功能:
506 /// 保存XML文件
507 /// </summary>
508 public void SaveXmlDocument(string tempXMLFilePath)
509 {
510 try
511 {
512 //保存设置的结果
513 Savexml(tempXMLFilePath);
514 }
515 catch(XmlException xmle)
516 {
517 throw xmle;
518 }
519 }
520 /**//// <summary>
521 ///
522 /// </summary>
523 /// <param name="filepath"></param>
524 private void Savexml(string filepath)
525 {
526 xmlDoc.Save(filepath);
527 }
528
529 #endregion
530
531 }
532
533}
