Reading value from web.config file?

问题

From my DAL, How can i read a connection string from the web.config?

回答1:

You can use the WebConfigurationManager to read connection string value from web.config

Code Example:

using System.Configuration;

string connString = WebConfigurationManager.ConnectionStrings["ConnectionString"].ToString();

Make sure you have added the System.configuration reference to your DAL.

回答2:

using System.Configuration;

static string connectionString = 
    ConfigurationManager.ConnectionStrings["MyConn"].ConnectionString;

Yuu only need WebConfigurationManager if there are several Web.Config files in your project using data connection strings:

What's the difference between the WebConfigurationManager and the ConfigurationManager?

回答3:

System.Configuration.ConfigurationManager.ConnectionStrings["connStr"].ConnectionString

来源：https://stackoverflow.com/questions/13029873/reading-value-from-web-config-file