Gan ane mau tanya
syntax untuk input data ke data base access pada vb net 2010 itu bener ga gan kayak gini ?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim sqltambah As String = "INSERT INTO Siswa values ('" & TextBox1.Text & "','" & TextBox2.Text & "','" & TextBox3.Text & "','" & TextBox4.Text & "','" & TextBox5.Text & "','" & TextBox6.Text & "','" & TextBox7.Text & "','" & TextBox8.Text & "','" & TextBox9.Text & "','" & TextBox10.Text & "','" & TextBox11.Text & "','" & TextBox12.Text & "','" & TextBox14.Text & "'," & ComboBox1.DropDownStyle & "')"
'Dim sqltambah As String = "INSERT INTO Siswa values ('b','d','v','t','y','u','u','z','a','s','q','s','g')"

cmd = New OleDbCommand(sqltambah, conn)
cmd.ExecuteNonQuery()
Call tampilkan()

End Sub


mohon penjelasannya terhadap kesalah syntax ini karena ketika saya jalankan programnya syntaxnya error di cmd.ExecuteNonQuery()
dan erronya tertulis ExecuteNonQuery: Connection property has not been initialized.

maap gan masih newbie jadi ga bisa ngasih pic
mohon bantuannya gan