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?

database connectivity error

Answers (7)