Infralution Support

[esanabia]

I'm trying to use a combo box that is populated with items as an editor in my virtual tree (it's actually a modified combobox that display items as a tree when the user clicks the drop down, but I don't think it's relevant to my problem). I cannot bind the combo box to a datasource - I need to populate the items manually (i.e. combobox.add("Item 1").

I've added an editor in Designer (Edit Virtual Tree) and then set the Control property to my custom combobox. I have the DisplayMode set to "OnEdit". I then set my columns editor property to my Editor.

On the Form_Load event, I populate the combo box with my database items, but nothing appears in the drop down list.

I'm using vb.net. Please help. Thanks.

[Infralution]

Have a look at the following thread:

http://www.infralution.com/phpBB2/viewtopic.php?t=1074
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Infralution Support

[esanabia]

Thanks for the link. I added a handler to the CellEditor.InitializeControl event and it's working fine.

I'm having another issue with trying to add a new record... When a user opens the form, I populate the virtual tree with items the user had previously selected. The last item in the tree is just a blank record with a description of "Add new item". When the user clicks this row and selects an item from the the combo box, I want to add add a new record rather than update the existing row. This way there's always a "Add new item" row in the tree. I believe I should handle this in one of the vt events, but not sure.

Thanks for the help.

[Infralution]

What type of data source are you binding to?

You could update the existing row, but then add another new row (so that you always have another row).

You probably want to handle the SetCellValue event to handle this as a special case.

[esanabia]

I'm binding to a TypedList data source, like shown in the DatabaseBrowser sample. I updated the code in the SetCellValue and everything is working.

Thanks for all the help.