Fill Combobox from database

Question

I have an error with a combobox

My code:

SqlConnection conn = new SqlConnection();
try
{
    conn = new SqlConnection(@\"Data Source=SHARKAWY;Initia         


        

Answer 1

private void StudentForm_Load(object sender, EventArgs e)

{
         string q = @"SELECT [BatchID] FROM [Batch]"; //BatchID column name of Batch table
         SqlDataReader reader = DB.Query(q);

         while (reader.Read())
         {
             cbsb.Items.Add(reader["BatchID"].ToString()); //cbsb is the combobox name
         }
  }