C# Asp.Net操作XML文件：增删改节点信息实战技巧

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C# Asp.Net操作XML文件：增删改节点信息实战技巧

C#、Asp.Net中对XML文件进行操作，增、删、改XMl文件里面节点信息

1. public class XmlHelper
2. {
3. #region <b>增、删、改操作</b>==============================================
4. /// <summary>
5. /// 追加节点
6. /// </summary>
7. /// <param name="filePath">XML文档绝对路径</param>
8. /// <param name="xPath">范例: @ Skill/First/SkillItem</param>
9. /// <param name="xmlNode">XmlNode节点</param>
10. /// <returns></returns>
11. public static bool AppendChild(string filePath, string xPath, XmlNode xmlNode)
12. {
13. try
14. {
15. XmlDocument doc = new XmlDocument();
16. doc.Load(filePath);
17. XmlNode xn = doc.SelectSingleNode(xPath);
18. XmlNode n = doc.ImportNode(xmlNode, true);
19. xn.AppendChild(n);
20. doc.Save(filePath);
21. return true;
22. }
23. catch
24. {
25. return false;
26. }
27. }
28. /// <summary>
29. /// 从XML文档中读取节点追加到另一个XML文档中
30. /// </summary>
31. /// <param name="filePath">需要读取的XML文档绝对路径</param>
32. /// <param name="xPath">范例: @ Skill/First/SkillItem</param>
33. /// <param name="toFilePath">被追加节点的XML文档绝对路径</param>
34. /// <param name="toXPath">范例: @ Skill/First/SkillItem</param>
35. /// <returns></returns>
36. public static bool AppendChild(string filePath, string xPath, string toFilePath, string toXPath)
37. {
38. try
39. {
40. XmlDocument doc = new XmlDocument();
41. doc.Load(toFilePath);
42. XmlNode xn = doc.SelectSingleNode(toXPath);
43. XmlNodeList xnList = ReadNodes(filePath, xPath);
44. if (xnList != null)
45. {
46. foreach (XmlElement xe in xnList)
47. {
48. XmlNode n = doc.ImportNode(xe, true);
49. xn.AppendChild(n);
50. }
51. doc.Save(toFilePath);
52. }
53. return true;
54. }
55. catch
56. {
57. return false;
58. }
59. }
60. /// <summary>
61. /// 修改节点的InnerText的值
62. /// </summary>
63. /// <param name="filePath">XML文件绝对路径</param>
64. /// <param name="xPath">范例: @ Skill/First/SkillItem</param>
65. /// <param name="value">节点的值</param>
66. /// <returns></returns>
67. public static bool UpdateNodeInnerText(string filePath, string xPath, string value)
68. {
69. try
70. {
71. XmlDocument doc = new XmlDocument();
72. doc.Load(filePath);
73. XmlNode xn = doc.SelectSingleNode(xPath);
74. XmlElement xe = (XmlElement)xn;
75. xe.InnerText = value;
76. doc.Save(filePath);
77. }
78. catch
79. {
80. return false;
81. }
82. return true;
83. }
84. /// <summary>
85. /// 读取XML文档
86. /// </summary>
87. /// <param name="filePath">XML文件绝对路径</param>
88. /// <returns></returns>
89. public static XmlDocument LoadXmlDoc(string filePath)
90. {
91. try
92. {
93. XmlDocument doc = new XmlDocument();
94. doc.Load(filePath);
95. return doc;
96. }
97. catch
98. {
99. return null;
100. }
101. }
102. #endregion <b>增、删、改操作</b>
103. #region <b>扩展方法</b>===================================================
104. /// <summary>
105. /// 读取XML的所有子节点
106. /// </summary>
107. /// <param name="filePath">XML文件绝对路径</param>
108. /// <param name="xPath">范例: @ Skill/First/SkillItem</param>
109. /// <returns></returns>
110. public static XmlNodeList ReadNodes(string filePath, string xPath)
111. {
112. try
113. {
114. XmlDocument doc = new XmlDocument();
115. doc.Load(filePath);
116. XmlNode xn = doc.SelectSingleNode(xPath);
117. XmlNodeList xnList = xn.ChildNodes; //得到该节点的子节点
118. return xnList;
119. }
120. catch
121. {
122. return null;
123. }
124. }
125. #endregion <b>扩展方法</b>
126. }

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