หนูจะเพิ่มค่า checkbox ลงในฐานข้อมูล ทีละหลายๆค่าพร้อมค่าในTextBoxด้วย แต่หนูเพิ่มลงแล้วมันเพิ่มไม่ได้มีปัญหาERROR

Imports Oracle.DataAccess.Client
Public Class selectitem
    Dim oradb As String = "Data Source=127.0.0.1;User Id=hr;Password=hr"
    Private Sub btnsave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsave.Click
        Dim conn As New OracleConnection(oradb)
        Dim sb As New System.Text.StringBuilder
        Dim sbb As New System.Text.StringBuilder
        Try
            conn.Open()
            Dim sql As String = "SELECT * FROM MYTABLE"
            Dim cmd As New OracleCommand(sql, conn)
            cmd.CommandType = CommandType.Text

            sb.Append("INSERT INTO ")
            sb.Append(" MYTABLE(MEMBER_ID, INVENTORY_NAME, AMOUNT_BORROW)")
            sb.Append(" VALUES(:MEMBER_ID, :INVENTORY_NAME, :AMOUNT_BORROW)")
            sql = sb.ToString
            cmd.CommandText = sql

            With cmd
                .Parameters.Clear()
                .Parameters.Add(":MEMBER_ID", OracleDbType.Int64).Value = txtIDmember.Text.Trim
                .Parameters.Add(":INVENTORY_NAME", OracleDbType.Varchar2).Value = chkitem_1.Text.Trim
                .Parameters.Add(":AMOUNT_BORROW", OracleDbType.Int32).Value = txtamout_1.Text.Trim
		.Parameters.Add(":INVENTORY_NAME", OracleDbType.Varchar2).Value = chkitem_2.Text.Trim
                .Parameters.Add(":AMOUNT_BORROW", OracleDbType.Int32).Value = txtamout_2.Text.Trim
                If .ExecuteNonQuery() = 1 Then
                    MessageBox.Show("เพิ่มข้อมูลเรียบร้อย", "Add new Completed...", MessageBoxButtons.OK, MessageBoxIcon.Information)
                Else ' เท่ากับ ศูนย์ คือ ทำงานไม่สำเร็จ
                    MessageBox.Show("ไม่สามารถเพิ่มข้อมูลได้", "Problem...", MessageBoxButtons.OK, MessageBoxIcon.Information)
                End If
            End With
        Catch ex As Exception
            MessageBox.Show(ex.Message.ToString())
        Finally
            conn.Dispose()
        End Try
    End Sub
End Class