ASP.NET：上传之前验证文件的大小（宽度和高度） [英] ASP.NET: Validate file size (width and height) before upload

问题描述

有一些方法之前验证影像尺寸（高度和宽度）把它上传到服务器？

Is there some way to validate the image size (height and width) before upload it to server?

我想使用Javascript，但我不知道怎么办。或者，也许有一些客户asp.net验证。

I think is using Javascript but I don't know how. Or maybe with some client asp.net validator.

任何意见？

推荐答案

这不能使用在客户端的JavaScript实现。也许你会发现写在闪光，Silverlight的或类似的文件上传组件，允许，限制文件的类型，大小和尺寸被上传。

This can't be done using javascript on the client-side. Maybe you'll find a file upload component written in flash, silverlight or similar that allows to restrict the files being uploaded by the type, size and dimensions.

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