Hi Mike

Thanks for the reply.

Yeah that is exactly the conclusion I came to myself thru trial and error.

Interestingly the CustomControl that is available from the Visual Studio "Add New Item" templates derives also from Control and gets a designer error straight out of the box!

I raised this on both Github and Visual Studio Developer Community and both say it is a known issue that is being investigated.

Thanks again

Geoff

Hi Mihoko

Great, thanks for that, please keep me informed.

Regards

Geoff

Hi Mihoko

Using the attached sample

1/ Open the solution in Visual Studio 2019 v 16.10.4

2/ Compile the application in Debug build

3/ Right click on the RamesysPanel control and choose "View Designer" from the context menu. This control inherits from Infragistics.Win.Misc.UltraPanel

4/ You will get the error when attempting to view the RamesysPanel control in the designer window, I have added a screenshot of the error to the zip file I have attached.

5/ Right click on the UserControl1 control and choose "View Designer" from the context menu. You will NOT get the error with this control. This control inherits from System.Windows.Forms.UserControl

Regards

Geoff

InfragisticsError.zip

Hi Mihoko

Thanks for the reply, yes I realised that I could manually update but I was trying to point out that the automated way of using the Version Utility does not work.

Regards

Geofff

Hi again

I tried your sample solution against Visual Studio 2019 Community Edition v16.9.2 and got the attached error when opening the RamesysPanel control in design view.

Again please see my comments above about the confusion around Visual Studio and Infragistics versions

Regards

Geoff

Hi there

Thanks for the reply

I am a bit confused here, I was under the impression that in order to use 2021.1 against Visual Studio 2019 16.10 or later that I needed to use 21.1.32-ci but you are saying here I should try against 21.1.24.

I have NO option to downgrade my Visual Studio 2019 to 16.9.x so can you please tell me which version of 2021.1 I should be using against Visual Studio 2019 16.10 or later?

Thanks

Geoff

Hi there

It won’t upgrade when using SDK style Visual Studio projects which are the way forward when multitargeting or using .NET 5

I have attached an example

Regards

Geoff

Attachments:

1. WindowsFormsApp1_4_6_2-SDK.zip