<configuration>
<appSettings>
<add key="conn" value="server=.;database=***;uid=sa;pwd=sa"/>
</appSettings>
<connectionStrings/>
试试
<appSettings>
<add key="conn" value="server=.;database=***;uid=sa;pwd=sa"/>
</appSettings>
<connectionStrings/>
试试
<!-- Other configuration settings --><connectionStrings> <add name="Sales"
providerName="System.Data.SqlClient"
connectionString= "server=myserver;database=Products;uid=salesUser;pwd=sellMoreProducts" /> <add name="NorthWind"
providerName="System.Data.SqlClient"
connectionString="server=.;database=NorthWind;Integrated Security=SSPI" /></connectionStrings>
<add name="MySql" value="Data Source=localhost;Database=Test;User ID=root;Password=root;"/>
</appSettings>
这个支持
<appSettings>
<add key="user" value="123"/>
</appSettings>
</configuration>
同意一楼的,观点
而在运行时控件运行正常?如果是的话,可以不用管它
不想看到错误提示的话,只要在Tools->Options中禁用 实例化活控件