配置文件,對於程序本身來說,就是基礎和依據,其本質是一個xml文件,對於配置文件的操作,從.NET 2.0 開始,就非常方便了,提供了 System [.Web] .Configuration 這個管理功能的NameSpace,要使用它,需要添加對 System.configuration.dll的引用。
對於WINFORM程序,使用 System.Configuration.ConfigurationManager;
對於ASP.NET 程序, 使用 System.Web.Configuration.WebConfigurationManager;
對於配置文件內容的讀取,真是太普遍不過了,如果你的程序裡,沒有讀取配置文件內容的方面,你都不好意思拿出來用
我們以最常見的 AppSettings 小節來作為例子:
假設有如下的配置文件內容:
復制代碼 代碼如下:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="y" value="this is Y"/>
</appSettings>
</configuration>
1. 讀取值:
* Asp.Net: System.Web.Configuration.WebConfigurationManager.AppSettings[“y”];
* WinForm: System.Configuration.ConfigurationManager.AppSettings[“y”];
2. 添加一項 ASP.NET(需要有寫權限):
Configuration config = WebConfigurationManager.OpenWebConfiguration(null);
AppSettingsSection app = config.AppSettings;
app.Settings.Add("x", "this is X");
config.Save(ConfigurationSaveMode.Modified);
WinForm:
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
AppSettingsSection app = config.AppSettings;
app.Settings.Add("x", "this is X");
config.Save(ConfigurationSaveMode.Modified);
3. 修改一項
* Asp.Net
Configuration config = WebConfigurationManager.OpenWebConfiguration(null);
AppSettingsSection app = config.AppSettings;
//app.Settings.Add("x", "this is X");
app.Settings["x"].Value = "this is not Y";
config.Save(ConfigurationSaveMode.Modified);
* WinForm
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
AppSettingsSection app = config.AppSettings;
//app.Settings.Add("x", "this is X");
app.Settings["x"].Value = "this is not Y";
config.Save(ConfigurationSaveMode.Modified);
4. 刪除一項 * Asp.Net
Configuration config = WebConfigurationManager.OpenWebConfiguration(null);
AppSettingsSection app = config.AppSettings;
app.Settings.Remove("x");
config.Save(ConfigurationSaveMode.Modified);
* WinForm
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
AppSettingsSection app = config.AppSettings;
app.Settings.Remove("x");
config.Save(ConfigurationSaveMode.Modified);