Show Updated Value In Combobox?

I have some text boxes in my form that takes data and saves the data to the database. There is a combo box on the form that loads data from a specific field of a database.

When I enter and save the new data (using the textboxes), the combobox doesn't show the newly entered data. I tried to refresh the combobox using code like combobox.refresh, me.refresh etc....to refresh the form but nothing is working.

The combobox only display the new data when I close the form and reload the form again. Anyway, the data loading in the combobox is done using datasource, displaymember, valuemember in the properties So, how can I make the combobox show the updated record (field)?

the combobox name is cboManager
the Displaymember: Mname

Here's the code

Private Sub frmAdmin_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'UserDataSet.Manager' table. You can move, or remove it, as needed.

[Code]....