ConfigurationManager

ConfigurationManager读取和写入

 
  提供对客户端应用程序配置文件的访问
  通过引入System.Configuration.dll可以用ConfigurationManager类来读取项目中保存在App.config中的配置信息,如:
 
<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <appSettings>

    <add key="Number0" value="9759436"/>

    <add key="Number1" value="9759437"/>

    <add key="Number2" value="9759438"/>

    <add key="Number3" value="9759439"/>

  </appSettings>

    <startup>

        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />

    </startup>

</configuration>

 

 
 
后台:
 
读取数据:  
private void Button_Click_1(object sender, RoutedEventArgs e)

 {

        int i = int.Parse(ConfigurationManager.AppSettings["Number2"]);

        this.txtMsg.Text = i.ToString();

 }

 

写入数据: 
Configuration cfa = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

cfa.AppSettings.Settings["Number2"].Value = "65434";

cfa.Save();

 

 

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