BC30506: handles clause requires a withevents variable defined in the containing type or one of its base types

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I have a website that runs, I didn't make any changes to it for a while. VS2019 notified about the available update and I ran it. Then, when I opened my website, I have 99 errors regarding WithEvents. All controls in .vb files underlined red, can't debug, and any changes I make (like adding a new control) won't reflect in run time. I have .design files and all controls are in it declared correctly (WithEvents). The website works btw.

VB

'code:
lblID.Text = i.student_id.ToString 

'design:
Protected WithEvents lblID As Global.System.Web.UI.WebControls.Label

Thank you!

What I have tried:

I tried to remove/add controls. I tried to create a new website, new .asp/.vb pages. Copying the code from the old ones gave me the same errors.

Posted 24-Mar-22 9:34am

Barboskin

Updated 27-Mar-22 21:08pm

Maciej Los

v2

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Comments

CHill60 25-Mar-22 5:26am

Have you tried the steps outlined at Troubleshoot installation or upgrade issues - Visual Studio (Windows) | Microsoft Docs[^]

Barboskin 25-Mar-22 9:44am

I reinstalled VS. Didn't help. It happens only to this one website.

CHill60 25-Mar-22 9:48am

None of the suggestions on that link were to re-install VS so I guess you didn't try them

Barboskin 25-Mar-22 12:05pm

I did it before I read your comment. I'll try it now.

Barboskin 26-Mar-22 0:37am

I did follow the steps recommended. No change. Still the same errors. Thanks.

Richard Deeming 29-Mar-22 9:28am

If it builds and runs, then it's most likely a problem with Visual Studio's cache. Try closing Visual Studio and deleting the hidden .vs folder from your solution folder.

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