database connectivity error

Question

System.Data.SqlClient.SqlException (0x80131904): Cannot open database login failed database cannot connecting plz help ....

Dipankar Biswas · Answer

conn.ConnectionString = Data Source=Localhost; Initial catalog=databasename; Integrated security=true

Abhishek Jaiswal · Answer

Hey! try this (local)\sqlexpress ; Initial Catalog=master/model/msdb; Integrated Security=True providerName=system.data.sqlclient/> :)

Isham Khan · Answer

data source = (local)\sqlexpress; initial catalog = 'db name'; integrated security =sspi;

Isham Khan · Answer

data source = (local)\sqlexpress; initial catalog = 'db name'; integrated security =sspi;

Sanjay Kumar · Answer

Hi connectionString=Data Source=.;Initial Catalog=LMS;User ID=sa;Password=temperament otherwise you need to specify the name of the instance of the server connectionString=Data Source=.\INSTANCENAME;Initial Catalog=LMS;User ID=sa;Password=temperament https://www.connectionstrings.com/sql-server-2012/

Abhay Shanker · Answer

Check your connection string.

Hemant Srivastava · Answer

Looks like something typo error in your connection string How are entering database connection string? Can you paste your code?