如何从File处理程序文件中获取FileStream中的Length？ [英] How to get Length in FileStream From .NET handler file?

问题描述

嗨.........



i面临一个问题，即从文件流中获取长度...当我要上传jpeg时使用处理程序文件的图像...



一些时间长度变为零...这是我面临的问题..

PLZ给我一些解决方案

hi.........

i have facing one issue which is not getting length from File Stream.. when i am going to upload jpeg image using handler file...

Some time length getting as zero... this is what a issue i am facing..
plz give me some solutions

推荐答案

您可能正在尝试重新打开文件流，试试这个。

You are probably trying to re-open the filestream, try this.

Dim fileStream As New IO.FileStream(mapPath & "\" & filename, FileMode.OpenOrCreate)
    If (fileStream.Length) > 50000 Then
    System.Web.HttpContext.Current.Response.Write("{success:false, errmsg:'File size is large imagesize}")
    fileStream.Close() 'Be sure to close the filestream.
    Exit Sub
End If

祝你好运。

Good luck.

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