Is there a way to convert my Console Application into a Windows Forms Application in C#?

You need to add a reference to the WinForms assembly

• Right click on the solution and select "Add Reference"
• Select System.Windows.Forms and hit OK

You may need to do the same for System.Data as well depending on your project setup

Make sure you add the System.Windows.Forms assembly in your references for the project. In the solution explorer, right click on 'References' and then under the .NET tab find the System.Windows.Forms assembly and add it.

You need to add a reference to System.Windows.Forms. Right-click your project and choose Add Reference.

On the .NET tab choose the the previously mentioned reference.