Data doesn't come up in SQL database

Question

Hi,
I have been trying add data to my local .mdf database through C#. My code executes successfully but the data doesn't come up when I view the table data through Server Explorer. My database is not read-only and I have set it to never copy the database. Here
is my code:
SqlConnection con = new SqlConnection(global::Quizz.Properties.Settings.Default.QAConnectionString);
            string sql = "INSERT INTO Old (Question, AnsOne, ansTwo, ansThree, Correct) VALUES (@Question, @AnsOne, @ansTwo, @ansThree, @Correct)";
            SqlCommand sqlcmd = new SqlCommand(sql,con);
            sqlcmd.Parameters.AddWithValue("@Question", questiontxtbox.Text.ToString());
            sqlcmd.Parameters.AddWithValue("@AnsOne", ans1textbox.Text.ToString());
            sqlcmd.Parameters.AddWithValue("@AnsTwo", ans2textbox.Text.ToString());
            sqlcmd.Parameters.AddWithValue("@AnsThree", ans3textbox.Text.ToString());
            sqlcmd.Parameters.AddWithValue("@Correct", selectedradio);
            con.Open();
            sqlcmd.ExecuteNonQuery();
            MessageBox.Show("success!");
How do I solve this problem?

Answer 1

If your result of "sqlcmd.ExecuteNonQuery();" >
0 without any exceptions, I think you should try to see whether your local db is copied again each time. I mean you are dealling with a copy type of db instead of real one.
If so, please:
1) Please change the property by switching to the db and change the "Copy To Local" to false.
2) Create an "App_Data" folder.
3) Change your db connection string to this following:
Server=.\SQLExpress;AttachDbFilename=|DataDirectory|\MyDataFile.mdf;Database=dbname;
Trusted_Connection=Yes;
For more about connection string, plz see: http://www.connectionstrings.com/sql-server/
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