Question

I have a question about C#. I wrote a function using ASP.net, when the user clicks the button, it should call this function and insert the sql to the local database. However, I don’t know why it is not working. Can anyone help me?

My local database is Access, which is stored under the ‘App_Data’ folder.

protected void button1_Click(object sender, EventArgs e)
        {
            SqlConnection myConnection = new SqlConnection(connectionString);  
           // I think the problem is here, but I don't know how to do

            SqlCommand myCommand = new SqlCommand("INSERT INTO [car] ([carName], [carType]) VALUES (@carName, @carType)", myConnection);

            SqlParameter carName= myCommand.Parameters.Add("@carName", SqlDbType.Text);
            SqlParameter carType= myCommand.Parameters.Add("@carType", SqlDbType.Text);

           carName.Value = carNametb.Text;
           carType.Value = carTypetb.Text;

           myConnection.Open();
           myCommand.ExecuteNonQuery(); 
           // need to close() the connection where?

    }

Answer 1

You need to declare your connection string.

string connectionstring = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:Database Password=MyDbPassword;";