I am trying to display the username that had signed in on the selected date in a dateTimePicker,from ms access database to c# datagridview.
I don’t know where I am wrong, it only displays the column name but not the records.

string strConn = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:/Users/ EmployeeAttendanceRegister.accdb";
using (var cn = new OleDbConnection(strConn))
using (var cmd = new OleDbCommand("SELECT [Username] FROM SignInTime WHERE SignIn =@SignIn", cn))
cmd.Parameters.Add(new OleDbParameter("@SignIn",dateTimePicker1.Value.ToS hortDateString()));
using (OleDbDataAdapter oda = new OleDbDataAdapter(cmd))
dataGridView1.DataSource = dt.Tables[0];