All Answers

Hi Frank. You are correct, I am using an invisible Upload control (initial visible to be loaded in browser, made invisible after) and triggering it from a button.
After I installed Visual Studio 2026 and Wisej4 extension, it’s working everything. Strange that the same code build and run from VS 2022 trigger the upload control but it’s never calling the uploaded event. Bu again, my VS2022 environment has glitches with Wisej 4 (wisej 3.5 works perfect).

Go to Extensions / Manage Extensions / Installed
Select Wisej.NET and Uninstall
Close VS to let the uninstall run
Download from https://wisej.com/builds
Run the VSIX

Done.

It seems that something is really messed-up on my pc. Look what’s happening when, in a new wisej 4 project, I tried to drad&drop an upload control on windows surface. Please advice.

After uninstall, redownload and reinstall Wisej.NET-4-VS2022.vsix the  error is

Value cannot be null. Parameter name: instance

Looks like props is trying to reference 4.8.0 for net48 when using the old project format. I changed your project to the new SDK format and there is no System.Drawing.Common anymore. Looks like the old project format in Visual Studio sets $(TargetFramework) to something else other than net48.

Hi Adrian,

project opens fine here.

As written in the comment:
Please uninstall Wisej.NET 4.0.5 via Manage Extensions.
Redownload from https://wisej.com/builds
Install that version

Best regards
Frank

Here you have a minimal example (project and print screen with error)

Works perfectly fine for me.

Works perfectly fine for me.

Hi Adrian,

are you using an invisible Upload control and triggering it from a button or what is cmdUploadPDF in your code?
Please provide a test case that shows what you are trying.

TIA
Frank

Hi Nicky,

wisej.core.dll and wisej.web.dll are for very old Wisej.NET versions and don’t help you here at all.
If Wisej.NET is missing from the Toolbox it’s usually a glitch in Visual Studio.
Try to close all windows, close VS, delete obj & bin folders and restart it. Do a full rebuild and then open your form.

Best regards
Frank

Hi Adrian,

if you installed from the VS Marketplace please do the following:

Uninstall Wisej.NET Extension.
Download from https://wisej.com/builds/
Install the VSIX from there.

4.0.5 in the marketplace has some issues and we are currently working on resolving them.

Best regards
Frank

Thanks for looking into it.

Yes, this is a self-hosted environment running on IIS. The .NET Hosting Bundle has been installed on the server, including the ASP.NET Core runtime required for IIS hosting.

That said, I was still experiencing the issues mentioned earlier, which is why I wanted to double-check if there are any additional dependencies, configuration steps, or specific runtime versions that we should verify.

This is first time I was looking at DotNet core application, did follow online instructions if there’s any error but last time it was loading everything without any error but only showing blank first page but actually starting the application.

Hi Ahmad,

Would it be possible to give more detail about the environment?

From what I understood, it’s a self-hosted environment, did you install the .NET Hosting Bundle from Microsoft to enable ASP.NET Core hosting via IIS?

All the issues that you’re describing indicate that you’re missing the required runtime to run the application adequately.

Let me know!

Best,
Alaa

Hi Uwe,

this has been fixed in Wisej.NET 3.5.26/4.0.5 that have just been released.

Best regards
Frank

Thanks for replying, but I downloaded Wisej-2-chartjs3 and it’s giving me errors. I know how to load the data into a Chart.js file; sometimes it works, sometimes it doesn’t. I get this error message visually in the Chart.js component: “chartdatalabels is not defined chartjs3 Wisej”.

I’m stuck on what to change or what I’m missing to make it work correctly. I’d rather go back to the Wisej-2-chartjs2 version.

Thank you very much for your help.

This does not work with ChartJS2 (wisej-2-chartjs or wisej-3-chartjs) You would need to use ChartJs3 (wisej-2-chartjs3 or wisej-3-chartjs3).

Hello,

A few issues here:

1. You said you are using 2.5.32. Wisej 2 is no longer supported. You are welcome to ask questions about Wisej 3 or 4 on this forum
2. We would need a runnable test case in order to investigate this issue, using Wisej 3 or 4. Please attach one if you want us to investigate this further.

Thanks,

Julie

Unfortunately, we no longer support Wisej 2. Therefore this question is out of the scope of what we cover on this support forum.

Reposting because it got cut off:

If you use the fontawesome characters you can set the color like so:

var iconHtml4 = "<i style=\"color:red\" class=\"fa-brands fa-github\"></i>";

If you do that, you need to add this to the head in Default.html:
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css"/>

See attached sample