獲取方式取決於數據庫中配置的方式:
第一種:用appSettings配置的方式
<appSettings>
<add key="ConnectionString" value="data source=xxx;initial catalog=xxx;user id=xxx;password=xxxx;persist security info=True;packet size=4096"/>
</appSettinngs>
獲取方式爲:string conSql = ConfigurationManager.AppSettings["ConnectionString"];
第二種:用connectionStrings配置的方式
<connectionStrings>
<add name="SQLConnet" connectionString="Data Source=xxx;Initial Catalog=xxx;uid=sa;pwd=123456;" providerName="System.Data.SqlClient" />
</connectionStrings>
獲取方式爲:string conSql = ConfigurationManager.ConnectionStrings["SQLConnet"].ToString();