Context Menu Slow to Open

[sguergachi]

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When I right click on a file item the right click context menu takes at least a few seconds, which is considerably slower than native File Explorer and frequently interrupts my flow of using this app, making it unusable for me.

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I want it to show context menu as soon as possible, and if need be, load additional context menu items asynchronously, that way items that should be readily available (cut, copy paste) don't need to wait for context items that need more time to load in.

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Using native file explorer.

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This is my context menu for reference

[sguergachi]

Basically if we can have an instant access to these items on right click and load in the rest as they come in, that would improve UX by a lot

[ShankarBUS]

How about using a CommandBarFlyout instead of a MenuFlyout?

Would that cause any problems?

[Chris2011]

I can reproduce it. But IMHO it is more a bug or misbehaviour than a new feature.

[gave92]

Some findings on this.

I've added a stopwatch in a couple of checkpoints to see what is taking the longest:

• QueryContextMenu, 1 line
• LoadContextMenu function in fulltrust process, which includes [1]
• SetShellContextMenu function, which includes [1] and [2] and is the total time taken to show the menu items

QueryContextMenu [ms]	LoadContextMenu [ms]	SetShellContextmenu (total) [ms]
57	70	93
334	368	420
1576	1609	1681
2208	2232	2285

More than 80% of the time is taken by the single line QueryContextMenu and the time taken by it varies greatly from a few milliseconds to more that two seconds. Anything above ~800ms is perceivable as a delay.
QueryContextMenu is pretty much a single Win32 API call so I'm not really sure on how to improve this.

Showing the basic items first and then adding the other items after the menu is shown is currently impossible as with MenuFlyout all the menu items needs to be added before the menu is shown.

[Jenriksen]

If I can assist with solving this issue by any means please let me know.
The project looks very promising, but almost 2 sec to open a context menu is just too much for most people.
I have some c# skills to utilize.

[sguergachi]

This should be included in work done in #4180

[pklion]

Can't we improve performance by hiding no-needed items?
I think it'll be better if the editor of right-click menu which valid only for Files available.

[Chris2011]

I think this just make sense when you select a file. In the normal explorer we have different entries for File, Folder and nothing is selected.

[yaira2]

This issue should be resolved in main.