i got a error .. plz explain it

thnx. .ya'll i got it...!!

u try this
SqlConnection MyConnection = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"].ToString());

and in webconfg

Hi,
Please check your web.config file weather the value config is exist or not

string Connectionstring = ConfigurationManager.AppSettings["ConnectionString"].ToString();

check your web.confg that you declare the connection string or not.

ex:

providerName="System.Data.SqlClient" />

Could you please paste the error here?

from the screenshot, it shows 0 errors

Hi,
Please check your web.config file weather the value config is exist or not

connectionString="SQLEXPRESS;Initial Catalog=Dummy;Persist Security Info=True;User ID=sa;Password=password"

providerName="System.Data.SqlClient" />

Regards,
Iftikar