string connStr = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;

i am getting Object reference not set to an instance of an object. error when i run the program
in the web1.config file i am having
<connectionStrings> <add name="myConnectionString" connectionString="server=BADARI-PC\SQLEXPRESS;database=airod;uid=sa;password=a;" /> </connectionStrings>