I can't use a Winforms Control created with a Class - image

Question

I was looking for a Circular Picture Box for my app and I stumbled across this code (IT IS NOT MINE) and I've tried as many times as I could but I can't find any mistake. I have followed every step that was made in the tutorial for this Rounded Picture Box so it can't be a miscopy because it was working perfectly in the tutorial.
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;
namespace New_Radio_Barcelona.Controls
{
class RashiCircularPictureBox : PictureBox
{
private int border = 2;
private Color colorBorder = Color.RoyalBlue;
private Color colorBorder2 = Color.HotPink;
private DashStyle borderstyle = DashStyle.Solid;
private DashCap borderCap = DashCap.Flat;
private float gradiant = 50f;
public RashiCircularPictureBox()
{
this.Size = new Size(95, 95);
this.SizeMode = PictureBoxSizeMode.StretchImage;
}
public int Border
{
get
{
return border;
}
set
{
border = value;
this.Invalidate();
}
}
public Color ColorBorder
{
get
{
return colorBorder;
}
set
{
colorBorder = value;
this.Invalidate();
}
}
public Color ColorBorder2
{
get
{
return colorBorder2;
}
set
{
colorBorder2 = value;
this.Invalidate();
}
}
public DashStyle Borderstyle
{
get
{
return borderstyle;
}
set
{
borderstyle = value;
this.Invalidate();
}
}
public DashCap BorderCap
{
get
{
return borderCap;
}
set
{
borderCap = value;
this.Invalidate();
}
}
public float Gradiant
{
get
{
return gradiant;
}
set
{
gradiant = value;
this.Invalidate();
}
}
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
this.Size = new Size(this.Width, this.Width);
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
var graphic = pe.Graphics;
var rect = Rectangle.Inflate(this.ClientRectangle, -1, -1);
var rectborder = Rectangle.Inflate(rect, -border, -border);
var size = border > 0 ? border * 3 : 1;
using (var bordercolorG = new LinearGradientBrush(rectborder, colorBorder, colorBorder2, gradiant))
using (var path = new GraphicsPath())
using (var pen = new Pen(this.Parent.BackColor, border))
using (var penborder = new Pen(bordercolorG, size))
{
graphic.SmoothingMode = SmoothingMode.AntiAlias;
penborder.DashStyle = borderstyle;
penborder.DashCap = borderCap;
path.AddEllipse(rect);
this.Region = new Region(path);
graphic.DrawEllipse(pen, rect);
if (border > 0)
{
graphic.DrawEllipse(penborder, rectborder);
}
}
}
}
}
I compile the project and then try to add it to the Design tab as shown in the tutorial. It says it could not be loaded. I was trying to understand what is not working properly but I still do not find the mistake. Some help plis?
Another aspect to take into consideration is the fact that in class RashiCircularPictureBox : PictureBox puts 1 reference above the code and in public RashiCircularPictureBox() it says 0 references. It may be for this but I'm no expert on Classes and I'm stuck in this stupidity. if anyone could clear my mind about this issue I would be so grateful about it

Answer 1

The designer in most versions of Visual Studio up until recently has been a 32-bit process. So if the control was built as 64-bit, it wouldn’t be able to load it at design-time, but VS would still be able to create 64-bit applications that can use the 64-bit control at runtime.
This means if you build your control as 32-bit or AnyCPU, it should solve the design-time loading problem.
The release notes of Visual Studio 2022 version 17.0.0 state that “devenv.exe is now 64-bit only”. I haven’t tried this myself, but it probably means you can now use 64-bit controls at design time with the newer versions of VS.
In all cases, AnyCPU should work.