Question

c#怎么在winform中连接多个数据源

Answer 1

这样可行：

<add key="ConnectionString2" value="连接字符串"/>
<add key="ConnectionString2" value="连接字符串"/>
<add key="ConnectionString2" value="连接字符串"/>
<add key="ConnectionString2" value="连接字符串"/>


   //读取不同的连接字符串
   string _connectionString = ConfigurationManager.AppSettings["ConnectionString"];
   string _connectionString1 = ConfigurationManager.AppSettings["ConnectionString1"];