Additional information: incorrect syntax near ', '.

Question

1.00/5 (1 vote)

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SqlConnection conn = new SqlConnection(@"server=DELL-PC\SQLEXPRESS;Database=WinApp;Integrated Security = true");
            SqlCommand cmd = new SqlCommand("select count(*) from LoginInfo where Username = @uname, password = @pwd",conn);
            cmd.Parameters.Add(new SqlParameter("@uname", lblunametxt.Text));
            cmd.Parameters.Add(new SqlParameter("@pwd", lblpwdtxt.Text));
            conn.Open();
            int noOfRowsAffected = (int)cmd.ExecuteScalar();
            conn.Close();
            
            if(noOfRowsAffected > 0)
            {
                MDIParent md = new MDIParent();
                md.Show();
                this.Hide();
            }

            else
            {
                Console.Write(" invalid credentials");
            }

What I have tried:

SqlConnection conn = new SqlConnection(@"server=DELL-PC\SQLEXPRESS;Database=WinApp;Integrated Security = true");
            SqlCommand cmd = new SqlCommand("select count(*) from LoginInfo where Username = @uname, password = @pwd",conn);
            cmd.Parameters.Add(new SqlParameter("@uname", lblunametxt.Text));
            cmd.Parameters.Add(new SqlParameter("@pwd", lblpwdtxt.Text));
            conn.Open();
            int noOfRowsAffected = (int)cmd.ExecuteScalar();
            conn.Close();
            
            if(noOfRowsAffected > 0)
            {
                MDIParent md = new MDIParent();
                md.Show();
                this.Hide();
            }

            else
            {
                Console.Write(" invalid credentials");
            }

Posted 4-Nov-17 19:45pm

Member 13503770

Updated 4-Nov-17 20:43pm

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3 solutions

Solution 2

Mehdi is right that your SQL is wrong: comma is not valid as part of an WHERE clause.

But ... don't do it like that! Never store passwords in clear text - it is a major security risk. There is some information on how to do it here: Password Storage: How to do it.[^]

Posted 4-Nov-17 20:25pm

OriginalGriff

Solution 3

Above Answers are the correct...

Posted 4-Nov-17 20:43pm

Member 12088223

Comments

Richard Deeming 6-Nov-17 12:28pm

Yes, they are. But your "answer" doesn't add anything to them.

If you want to show your support or appreciation for an answer, you can use the star rating on the top-right of the answer to rate it, and you can click the "Have a Question or Comment?" button under the answer to add a comment.

But unless you're adding more information to the discussion, DO NOT post your comment as a "solution"!

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Mehdi Gholam · Accepted Answer · 2017-11-04T20:22:00

Solution 1

Your SQL should be :

SQL

select count(*) from LoginInfo where Username = @uname and password = @pwd

Use AND instead of ,

Posted 4-Nov-17 20:22pm

Mehdi Gholam