private void LoadData(params object[] args)
		{
			var format = args[0] as string;
			switch (format)
			{
				case "ppt":
					LinkData = new PowerPointLinkData();
					break;
				case "doc":
					LinkData = new WordLinkData();
					break;
				case "xls":
					LinkData = new ExcelLinkData();
					break;
				case "pdf":
					LinkData = new PdfLinkData();
					break;
				case "jpeg":
				case "png":
					LinkData = new ImageLinkData();
					break;
				case "lan":
					LinkData = new LanData();
					break;
				case "app":
					LinkData = new AppLinkData();
					break;
			}
			LinkData?.Load(args);
			LinkLoaded?.Invoke(this, EventArgs.Empty);
		}
		public void ReleaseData()
		{
			LinkData = null;
		}