System.Windows.Forms.CustomTabControl.OnResize C# (CSharp) Method

        protected override void OnResize(EventArgs e)
        {
            //	Recreate the buffer for manual double buffering
            if (this.Width > 0 && this.Height > 0){
                if (this._BackImage != null){
                    this._BackImage.Dispose();
                    this._BackImage = null;
                }
                if (this._BackBufferGraphics != null){
                    this._BackBufferGraphics.Dispose();
                }
                if (this._BackBuffer != null){
                    this._BackBuffer.Dispose();
                }

                this._BackBuffer = new Bitmap(this.Width, this.Height);
                this._BackBufferGraphics = Graphics.FromImage(this._BackBuffer);

                if (this._TabBufferGraphics != null){
                    this._TabBufferGraphics.Dispose();
                }
                if (this._TabBuffer != null){
                    this._TabBuffer.Dispose();
                }

                this._TabBuffer = new Bitmap(this.Width, this.Height);
                this._TabBufferGraphics = Graphics.FromImage(this._TabBuffer);

                if (this._BackImage != null){
                    this._BackImage.Dispose();
                    this._BackImage = null;
                }

            }
            base.OnResize(e);
        }