config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
<connectionStrings>
<add name="ZQDB" connectionString="server=10.132qwrwe.0wer23.3wre4;database=ZQrewrDBTest; uid=amsfwrwers_ace;pwd=AMweqrsdfS@123456" />
</connectionStrings>
<appSettings>
<add key="key1" value="value1"/>
</appSettings>
</configuration>
string constr=ConfigurationManager.ConnectionStrings["ZQDB"].ConnectionString;
string value=ConfigurationManager.AppSettings["key1"];