Error occured building Repetier-Host Plugin, what should I do?

UNHATE

I`m a beginner level in C#.

I want to make my custom plugin for Repetier-Host.

I downloaded DemoPlugin.zip in this site https://rhplugins.repetier.com/ for testing,

build using Visual Studio 2019.

But error occured like picture, but I don`t know what should I do.

Please Help me..

My Repetier-Host path is "C:\Users\admin\Desktop\Repetier-Host"

Repetier

You are missing some methods that you need to implement. Each component needs these:

        #region IHostComponent implementation

        public string ComponentName { get { return "Slicer"; } }

        public string ComponentDescription { get { return Trans.T("TAB_SLICER"); } }

        public int ComponentOrder { get { return 3000; } }

        public PreferredComponentPositions PreferredPosition { get { return PreferredComponentPositions.SIDEBAR; } }

        public Control ComponentControl { get { return this; } }

        public ThreeDView Associated3DView { get { return host.ObjectsView; } }

        public void ComponentActivated() { }

        public void ComponentDeactivated() { }

        #endregion

Here you also see sample implementations that you can use.