I'm trying to write Connection string to Web.config like this:
<connectionStrings>
<add name="Dbconnection" connectionString="Server=localhost;
Database=OnlineShopping ; Integrated Security=True"/>
</connectionStrings >
and read from it like this:
string strcon =
ConfigurationManager.ConnectionStrings["Dbconnection"].ConnectionString;
SqlConnection DbConnection = new SqlConnection(strcon);
when run the program I get an error because of the null reference. but when I use this code:
SqlConnection DbConnection = new SqlConnection();
DbConnection.ConnectionString =
"Server=localhost; Database=OnlineShopping ; Integrated Security=True";
I don't get any error and the program works correctly!
What is the problem?
See Question&Answers more detail:
os 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…