OnSelect for Gallery not firing when the Items are initially loaded

[Anonymous]

I have a gallery that needs to perform a few UpdateContexts operations when an Item is selected in the gallery. 

I also have the TemplateFill setup to highlight the currently selected item;

If(hsl_partsrequestid=PartsRequests.Selected.hsl_partsrequestid,
RGBA(0,0,0,.250), 
RGBA(0,0,0,0)
)

When the screen is shown and the items are loaded into the gallery, the gallery selects the first item (it's highlighted), but the OnSelect is never fired.

Does anyone know a way to hook into this event or tell the Gallery not to default the selection to the first item

[TimRohr · Accepted solution]

If what you're worried about is that the Gallery "looks" like it selected the item, but the OnSelect never fired, then just add an UpdateContext({}) to your OnSelect statement, and read that variable in your TemplateFill property.

OnSelect:

...whatever code you have, then...

UpdateContext({_initGallery: true})

TemplateFill:

If(hsl_partsrequestid=PartsRequests.Selected.hsl_partsrequestid && _initGallery,
RGBA(0,0,0,.250),
RGBA(0,0,0,0)
)

That way, it will never look like it is selected until the Gallery has been selected one time. Once you get that, you'll just need to manage resetting the _initGallery to false any time the Gallery would refresh, etc.

[Anonymous]

Thanks Tim,   Nice simple solution!!!