Hello, How can I programmatically call the windows dialog window: "Select an app to open this" which is used to set default programs? I am looking for some example in c# or vb. Any assistance would be appreciated. Thank you in advance.

You can see this thread : https://learn.microsoft.com/en-us/answers/questions/918659/change-file-association-for-pdf-programmatically-t

How can I programmatically call the windows dialog window: "Select an app to open this" which is used to set default programs?

Hi MP_1_950 0

Hello,

How can I programmatically call the windows dialog window: "Select an app to open this" which is used to set default programs?

Select

I am looking for some example in c# or vb.

Any assistance would be appreciated.

Thank you in advance.

Hi MP_1_950 0 Reputation points

2024-12-06T14:21:10.9+00:00

Thank you for your response. I am not able to make registry entries or utilize 32-bit shell function.
Castorix31 86,966 Reputation points

2024-12-06T15:18:09.6133333+00:00

(comment under the answer...)

I don't see why you cannot use .NET registry classes or Win32 APIs or interfaces ?
Jiachen Li-MSFT 33,446 Reputation points Microsoft Vendor

2025-01-30T08:58:35.5933333+00:00

Hi @Hi MP_1_950

Whether you want your app to appear in the list or to call this dialog through your app?