The other day I wanted to add news tags feature to a program, and to make it easy I wanted the user to be able of adding and removing news tags by double clicking a Listbox of available tags and assigned tags.
If you need to move items between bound Listboxes you cannot just use the Listbox.Add or Listbox.Remove methods. Instead you should add and remove rows to the Tables which they’re bound to.
This is the code I used:
Private Sub AvailableTagListBox_DoubleClick(sender As System.Object, e As System.EventArgs) Handles AvailableTagListBox.DoubleClick If Not IsNothing(AvailableTagListBox.SelectedItem) Then 'We are making a new row to be added to the table which then will appear in the listbox Dim Customer_News_Tags_Row As DataRow = MyDataSet.Customer_News_Tags.NewRow 'Since I have a Parent and Child relation I'm taking the current parent ID Dim NewsRow = DirectCast(Me.Customer_NewsBindingSource.Current, DataRowView) 'Parent ID Customer_News_Tags_Row("News_ID") = NewsRow("ID") 'Fill the listbox item display field which I have it bound to Customer_News_Tags_Row("Tag") = AvailableTagListBox.Text 'Adding new item to the other listbox by adding new row to its table MyDataSet.Customer_News_Tags.AddCustomer_News_TagsRow(Customer_News_Tags_Row) 'Delete the listbox item by deleting the row in its table MyDataSet.News_Tags.Select("ID=" & AvailableTagListBox.SelectedValue)(0).Delete() End If End Sub Private Sub AssignedTagListBox_DoubleClick(sender As System.Object, e As System.EventArgs) Handles AssignedTagListBox.DoubleClick If Not IsNothing(AssignedTagListBox.SelectedItem) Then Dim News_Tags_Row As DataRow = MyDataSet.News_Tags.NewRow 'I'm using a field called Tag News_Tags_Row("Tag") = AssignedTagListBox.Text MyDataSet.News_Tags.AddNews_TagsRow(News_Tags_Row) 'Here I'm matching with a field I have called Tag to delete from Assigned listbox items MyDataSet.Customer_News_Tags.Select("Tag='" & AssignedTagListBox.SelectedValue & "'")(0).Delete() End If End Sub
Hope this helps, and if you need any clarifications let me know