Here is part of my code:

Code:
Private Sub ESignSubmitButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ESignSubmitButton.Click
        Me.Validate()
        Me._859BindingSource.EndEdit()
        Me.ATCFormsDataDataSet._859.Item(Me._859BindingSource.Position).IsException = recordIsAnException()
        Me.ATCFormsDataDataSet._859.Item(Me._859BindingSource.Position).SubmissionDate = Now
        Me.ATCFormsDataDataSet._859.Item(Me._859BindingSource.Position).SubmittedBy = Environment.UserName.ToUpper
        If formIsComplete() Then
            Dim promptQuestion As DialogResult = MessageBox.Show("Are you sure?", "Submit?", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
            If promptQuestion = Windows.Forms.DialogResult.No Then
                Exit Sub
            End If
            Try
                Me.TableAdapterManager.UpdateAll(Me.ATCFormsDataDataSet)
                MessageBox.Show("Form submitted successfully", "Successful")
                Me.Close()
            Catch ex As Exception
                MessageBox.Show(ex.Message)
            End Try
        End If
End Sub
Here is my problem. My controls on the form were created from dragging and dropping one of my tables from the data explorer window onto the form in details form, not gridview. Amongst these controls are four comboboxes whose text properties are databound, but their items lists are not bound. When I click my submit button, all the data is sent to the database except the text from these four comboboxes. I have looked everywhere I can think of and can't figure out why the text from those comboboxes isn't being updated in the db.