How to populate vsct combo (B) based on the value chosen in combo (A)

Hugo Machado 1

I am developing an extension for Visual Studio 2022 and I have two vsct combos of type DynamicCombo added in my extension's toolbar:

<Combos>
   <Combo guid="guidPackageCmdSet" id="comboA" priority="0x0012" type="DynamicCombo" defaultWidth="240" idCommandList="comboAGetList">
       <Parent guid="guidPackageCmdSet" id="TWToolbarGroup"/>
       <CommandFlag>IconAndText</CommandFlag>
       <CommandFlag>CommandWellOnly</CommandFlag>
       <Strings>
           <ButtonText>Combo A: </ButtonText>
       </Strings>
   </Combo>
   <Combo guid="guidPackageCmdSet" id="comboB" priority="0x0013" type="DynamicCombo" defaultWidth="240" idCommandList="comboBGetList">
       <Parent guid="guidPackageCmdSet" id="TWToolbarGroup"/>
       <CommandFlag>IconAndText</CommandFlag>
       <CommandFlag>CommandWellOnly</CommandFlag>
       <Strings>
           <ButtonText>Combo B: </ButtonText>
       </Strings>
   </Combo>
<Combos>

I've created commands for each combobox to load values and handle the on change event.

Is there any way to populate the comboB after changing the value on comboA? I need to populate the comboB based on the value chosen in comboA. Is that possible?
Is it possible to load these combos with an array of my objects? I would need to display a NAME but when I change the value, I need its ID.

Thanks in advance.

Tianyu Sun-MSFT 30,566 Reputation points Microsoft Vendor

2022-02-25T10:45:14.103+00:00

Hi @Hugo Machado , what do you mean about populating the combobox?(populate value/color…)
Hugo Machado 1 Reputation point

2022-02-25T14:20:26.35+00:00

Hi @Tianyu Sun-MSFT ,

I mean load the combobox with values. How can I reference/bind the combobox (B) in the OnChangeComboA method?

I tried to get the command "OleMenuCommand(new EventHandler(OnLoadComboB), getListCmd);" and trigger the Invoke method like "cmd.Invoke()". The OnLoadComboB method is actually called but it fails when I try to set a value (although the idea is to load with values) with: Marshal.GetNativeVariantForObject("this is a random value", outValue):

Thanks!

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How to populate vsct combo (B) based on the value chosen in combo (A)

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