Repopulating A ComboBox From Database Table

trying to figure out out to make a combo box re-populate itself with values from its data bindings from an Access database.

I have my bindings in the combo box, and it pulls the right column from my table, and returns the proper value to a different table. Everything saves properly to all of the tables, but what i am trying to accomplish here is this...

I have a combo box, it is populated with a database column of "G/L codes" (by the way that is not the column name) the combo box shows these values without problem.

These codes exist in a table that is editable (basically so the user can add a G/L code to the list if one is missing), a button is supplied that opens a new form, which contains DB related text boxes, and a data binding navigator to look through the data base records, save, add new records, etc. When this form is loaded, the user can add a new record, save the info, and then close this form, which brings us back to the main form where the combo box is located that is populated with the values of this G/L code table, what I am trying to get working is updating this combo box now that a new G/L code has been added.

I have been looking for a solution for days, tried many forums, read all posts on this site that had a keyword of "combo box" and I can still find nothing. I have tried many code samples such as...

Private Sub Repopulate()
Me.G_L_Code___DescriptionComboBox.DataSource = Me.Db1DataSet.GLCodes
Me.G_L_Code___DescriptionComboBox.DisplayMember = "Combined"
Me.G_L_Code___DescriptionComboBox.ValueMember = "Combined"
Me.G_L_Code___DescriptionComboBox.Refresh()
End Sub

have tried calling this when the combo box gets focus in the attempt to update the combo box every time it is selected.

Have tried reloading the table adapter as well when the combo box takes focus with the following

Private Sub G_L_Code___DescriptionComboBox_TakeFocus(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles G_L_Code___DescriptionComboBox.GotFocus
'TODO: This line of code loads data into the 'Db1DataSet.GLCodes' table. You can move, or remove it, as needed.
Me.GLCodesTableAdapter.Fill(Me.Db1DataSet.GLCodes)
End Sub

Honestly I'm at wits end trying to get this combo box to repopulate its values from the database. I don't get any error codes when running either, all my attempts simply do nothing