ComboBox Dropdown Server 2003 Terminal Services?

Dec 22, 2011

I have built an application in VB 2010 on my Windows 7 Pro desktop. I have a particular combo box with a datasource that is dynamically populated, depending on certain values entered by the user; it may or may not have any records in the datasource. When I run/install the application on my desktop, the combo box acts normal, if I click the dropdown button and the datasource contains no records, the combobox will show a single blank beneath the combobox (to indicate no records). When I perform the same action on server 2003, the combobox DOES NOT show a blank row, it does nothing! It act's like it's broken.

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Urgh, I have spent the last couple of hours on this now. I normally end up finding the answer from a bit of Googling, but not with this one. Bit of a headache.

My questions:How can I catch when a user clicks the dropdown arrow on a combobox and prevent the dropdown list from being displayed.How can I then clear and populate the dropdown list and display it programmatically?

I have one agent program remotely connected to a server over the internet. When you click the dropdown arrow on the agent, it queries the server to determine what needs to be in the dropdown list. It then displays the dropdown list. The comboboxes act as filters for the subsequent comboboxes on the GUI. A delay in displaying the dropdown list is perfectly acceptable while retrieving the data. Initially querying all the possibly entries in the dropdown list is not an option because there are so many! Needs to be comboboxes compared to listboxes as the user may also type an entry that is not in the list.

[Code]...

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[Code] .....

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[code].....

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[code]

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[Code]....

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