winform app.cpnfig 文件的引用

1.app.config配置文件修改

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<?xml version="1.0" encoding="utf-8"?> <configuration>   <connectionStrings>     <add name="connectionString" connectionString="data source=127.0.0.1;persist security info=True;user id=test;password=test123" providerName="System.Data.SqlClient" />   </connectionStrings>   <appSettings>     <add key="verson" value="1.0.0" />     <add key="DownLoad" value="2" />   </appSettings> </configuration>

2.连接字符串的引用

• 　　添加引用

using System.Configuration;

• 　　连接字符串调用

 string conStr = ConfigurationManager.ConnectionStrings["connectionString"].ToString();
            MessageBox.Show(conStr);

3.appSettings 配置的调用

            Configuration cfa = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            string strval = cfa.AppSettings.Settings["DownLoad"].Value;
            MessageBox.Show(strval);