[Problem/Bug]: File uploading doesn't work correctly

[DmitryBorodiy]

What happened?

When I upload a file to input it says that the file weighs 0 bytes.

Screen.Recording.2024-12-15.023414.mp4

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

latest

SDK Version

latest

Framework

WinUI2/UWP

Operating System

Windows 11

OS Version

No response

Repro steps

Try create html input and upload any file or open MDN sample to try

https://developer.mozilla.org/en-US/docs/Web/API/File_API/Using_files_from_web_applications

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response

[sivMSFT]

Hi @DmitryBorodiy,

Could you please provide more details about the specific issue you are encountering with WebView2?

We attempted to reproduce the problem on our end but were unable to replicate it. Any additional information you can provide will help us investigate further.

[DmitryBorodiy]

Hi @DmitryBorodiy,

Could you please provide more details about the specific issue you are encountering with WebView2?

We attempted to reproduce the problem on our end but were unable to replicate it. Any additional information you can provide will help us investigate further.

Maybe this is a uwp issue. But some folders don't upload files to sites, even from a photo or document library. When I select a file from the video folder, for example, everything works. Can you tell me what can cause this problem?

[DmitryBorodiy]

Hi @DmitryBorodiy,

Could you please provide more details about the specific issue you are encountering with WebView2?

We attempted to reproduce the problem on our end but were unable to replicate it. Any additional information you can provide will help us investigate further.

More precisely, files are selected from all folders, but their size is sometimes not correctly transferred to the site.

[DmitryBorodiy]

Hi @DmitryBorodiy,

Could you please provide more details about the specific issue you are encountering with WebView2?

We attempted to reproduce the problem on our end but were unable to replicate it. Any additional information you can provide will help us investigate further.

Maybe to access for all folders I need to provide broadFileSystemAccess capability for UWP app? I have a feeling that WebView2 only accesses certain folders, not all of them. Therefore, when I select a file from the video folder, everything works, when from documents, the file is selected, but its content is passed empty, and its size is always 0 bytes.