This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(118.4, 42%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EWL%3C/text%3E%3C/svg%3E)
I am using Visual Studio Professional 2022 v. 17.3.1.
In a Core 6, Windows Forms Application, I created a UserControl. I've cleaned and recompiled my project several times, as well as checking whether the "Automatically Populate Toolbox option is set to true. I've opened and closed my solution, and rebooted my computer. The UserControl refuses to appear in the toolbox for a form in the same project.
The UserControl does have a parameterless, public constructor. What else can I possibly do? This was never an issue in older .Net Framework projects, but I'm already locked into using .Net Core.
If I can't get my control into the toolbox, is there another way to get it onto the form? I'm thought about adding it to the form's controls, but I'd like to configure it visually.
@Wasserman, Lisa , Welcome to Microsoft Q&A, I used vs2022 community version 17.3.1. I created a windows form app(.net 6.0) and made a test, it works well for me. I recommend that you could use code to add the user control to your windows form app.
UserControl1 user = new UserControl1();
this.Controls.Add(user);
I appear to have answered my own question. Going to the Visual Studio Installer and repairing the installation seems to have corrected my issue. I recommend trying this for any toolbox-related issues that don't respond to the usual fixes.