ConnectionStrings;＜connectionStrings＞ ＜add name="ConnectionString1" connectionString="Persist Security Info=False;User ID=sa;Password=;Initial Catalog=DataBase1;Server=(local);" providerName="System.Data.SqlClient"/＞ ＜add name="ConnectionString2" connectionString="Persist Security Info=False;User ID=sa;Password=;Initial Catalog=DataBase2;Server=(local);" providerName="System.Data.SqlClient"/＞ ＜/connectionStrings＞ 如果写成静态类方法，则可以使用下