//private ImageUploaderDialog _imageUploaderDialog = new ImageUploaderDialog() { ID = "ImageUploaderPropertyEditorForGrid_ImageUploaderDialog",DialogTitle = "上传图片"}; //private ImageUploader _imageUploader = new ImageUploader() { ID = "ImageUploaderPropertyEditorForGrid_ImageUploader" }; protected internal override void OnPagePreRender(Page page) { if (page.Form != null) { var div = this.GetControlsContainerInPage(page); ImageUploaderDialog imageUploaderDialog = new ImageUploaderDialog() { ID = "ImageUploaderPropertyEditorForGrid_ImageUploaderDialog", DialogTitle = "上传图片" }; ImageUploader imageUploader = new ImageUploader() { ID = "ImageUploaderPropertyEditorForGrid_ImageUploader" }; div.Controls.Add(imageUploaderDialog); div.Controls.Add(imageUploader); } }