How is this class used without public constructor in C#?

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I study a class and wonder how this class can be used. it does not have public constructor:

public sealed class Convert
{
    public System.Drawing.PointF ToGDI(Sharp3D.Math.Core.Vector2F value)
    {
        return new System.Drawing.PointF(value.X, value.Y);
    }
    public Sharp3D.Math.Core.Vector2F FromGDI(System.Drawing.PointF value)
    {
        return new Sharp3D.Math.Core.Vector2F(value.X, value.Y);
    }

    #region Private Constructor
    private Convert()
    {
    }
    #endregion
}

What I have tried:

I understand this private constructor will block user to instantiate this class, but this class does not have other parametric constructor to use, so what is the use of this class?

Posted 18-Jun-22 9:58am

Southmountain

Updated 18-Jun-22 11:31am

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OriginalGriff · Answer 1 · 2022-06-18T10:23:00

None whatsoever, that I can see.
It can't be instantiated, it can't be inherited, it doesn't contain any static field, properties, or methods.
You can't even use dependency injection with it, as far as I know.

To me, it looks like a singleton class that is lacking the singleton accessor / storage.

[edit]
Thinking about it, you would be able to instantiate it via Reflection, but that does seem like a fairly dumb idea for any practical purpose.
[/edit]

PIEBALDconsult · Answer 2 · 2022-06-18T11:31:00

Solution 2

As presented, it can't really do anything. Are you sure there is no other code?

Such a class could have a factory method, but that one seems not to.

Possibly it was meant to be a static class.

Posted 18-Jun-22 11:31am

PIEBALDconsult

Comments

Southmountain 18-Jun-22 18:35pm

there are other codes, but for this class, it's all.

thanks for your answer!