允许选择有点可能，当用户选择部分真实上传控件的值时，我们选择整个伪造控件的值。
Allowing selection is somewhat possible. When the user selects any part of the real file upload, we select the entire value of the fake file upload.
很难找到一个像样的文件上传控件，能够上传大文件，显示当前进度并且能在浏览器的安全级别设置为中级的环境运行。
It is difficult to find a decent upload control that handles large files, shows a progress bar, and still works in a medium-trust hosting environment.
在ASP.NET使用上传控件的第一步：在WebForm里添加这个服务器控件（查看UploadPage/Default.aspx），然后设置控件的属性。
The first step in using it in ASP.NET is to add the server control to a Web form (see UploadPage/Default.aspx) and setting the upload page in the server control's properties.
为了限制文件上传的类型，单个文件的大小，所有文件的大小我改善了服务器控件的选项。
I've included options to limit the file types to upload as well as limiting individual file size and total file size and can all be set using the server control.
HTML输入控件可用来上传文件，它有一个简单的文件类型。
HTML input control that is used to upload file has a simple type of file.
结构化图像控件可以通过元素来创建，能够帮助我们输出动态图像，上传、使用图像热点等等。
The structuring image accuse part can be founded by way of 's element , and can help our to send out the trends images , and upward passes and uses image hot spot etc.
控件支持换肤、输入模式转换、外观定制及WEB上传等强大功能。
Controls to support the skin, enter the mode of conversion, customize the appearance and powerful features, such as WEB upload.
配合vskin控件包使用！打包上传的！
配合vskin控件包使用！打包上传的！
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