asp.net中动态修改配置文件的方法

技术2022-05-20 45

很多时候，我们可能会在asp.net中动态的修改配置文件，我们可以使用如下代码中涉及到的类来完成配置文件，下面的代码是修改connectionstring的例子：

System.Configuration.Configuration c = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~"); c.ConnectionStrings.ConnectionStrings.Clear(); ConnectionStringSettings s = new ConnectionStringSettings(); s.ProviderName = "System.Data.OleDb"; s.ConnectionString = "Provider=Microsoft.oledb.jet.4.0;data source=c://abc.mdb"; s.Name = "myaccess"; c.ConnectionStrings.ConnectionStrings.Add(s); c.Save();

实例：

web.config

--------------------

</appSettings>

</configuration>

----------------------

protected void Page_Load(object sender, EventArgs e)

{

//FormSave();

WebSaveConfig();

}

/// <summary>

/// 当不在独立 exe 内部运行时，必须指定 exePath

/// OpenExeConfiguration(ConfigurationUserLevel.None)这个用于winform程序

/// </summary>

public void FormSave()

{

Configuration appCfg = ConfigurationManager.OpenExeConfiguration(

ConfigurationUserLevel.None);//?

AppSettingsSection appSettings = appCfg.AppSettings;

int myInt;

if (int.TryParse(appSettings.Settings["MyInt"].Value, out myInt))

{

Response.Write(myInt);

myInt *= 10;

appSettings.Settings["MyInt"].Value = myInt.ToString();

//appCfg.Save();

Response.Write("</br>" + myInt);

}

/// <summary>

/// asp.net web中

/// </summary>

public void WebSaveConfig()

{

//string path = Server.MapPath("~/Web.config");

Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");

config.ConnectionStrings.ConnectionStrings.Clear();

AppSettingsSection appSettings = config.AppSettings;