1 /// <summary>

最新推荐文章于 2023-09-11 16:30:29 发布

转载最新推荐文章于 2023-09-11 16:30:29 发布 · 882 阅读

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本文介绍了一种通过C#代码动态读写App.config配置文件的方法。包括如何设置和获取配置项的值，适用于需要灵活配置应用程序场景。

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 51aspx.com
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;//bbs.51aspx.com
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        }