动态操作.Config文件
引自:http://www.cnblogs.com/RuiLei/archive/2008/06/11/1217576.html
1 /// <summary>
2
/// Dynamic Write App.config
3 /// </summary>
4 /// <param name="AppKey"></param>
5
/// <param name="AppValue"></param>
6
public static void SetValue(string AppKey, string AppValue)
7 {
8 XmlDocument xDoc = new XmlDocument();
9 //获取可执行文件的路径和名称
10 xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");
11
12 XmlNode xNode;
13 XmlElement xElem1;
14 XmlElement xElem2;
15 xNode = xDoc.SelectSingleNode("//appSettings");
16
17 xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");
18 if (xElem1 != null) xElem1.SetAttribute("value", AppValue);
19 else
20 {
21 xElem2 = xDoc.CreateElement("add");
22 xElem2.SetAttribute("key", AppKey);
23 xElem2.SetAttribute("value", AppValue);
24 xNode.AppendChild(xElem2);
25
}
26 xDoc.Save(System.Windows.Forms.Application.ExecutablePath + ".config");
27 }
28
29 /// <summary>
30 /// Reader App.config
31 /// </summary>
32 /// <param name="appKey"></param>
33 /// <returns></returns>
34 public static string GetConfigValue(string appKey)
35 {
36 XmlDocument xDoc = new XmlDocument();
37 try
38 {
39 xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");
40
41 XmlNode xNode;
42 XmlElement xElem;
43 xNode = xDoc.SelectSingleNode("//appSettings");
44 xElem = (XmlElement)xNode.SelectSingleNode("//add[@key='" + appKey + "']");
45 if (xElem != null)
46 return xElem.GetAttribute("value");
47 else
48 return String.Empty;
49 }
50 catch (Exception)
51 {
52 return "";
53 }
54 }