AjaxControlToolkit.Design.AsyncFileUploadDesigner.GetDesignTimeHtml C# (CSharp) Method

        public override string GetDesignTimeHtml(DesignerRegionCollection regions)
        {
            var asyncFileUpload = (AsyncFileUpload)Component;

            var sb = new StringBuilder(1024);
            var sr = new StringWriter(sb, CultureInfo.InvariantCulture);
            var writer = new HtmlTextWriter(sr);
            asyncFileUpload.CreateChilds();
            asyncFileUpload.RenderControl(writer);

            return sb.ToString();
        }