文件路径不正确

Question

Inside my asp.net website I am trying to access a file

 FileStream stream = File.Open("/App_Data/" + FileName, FileMode.Open, FileAccess.Read);

I want this code to select an xlsxfile inside my websites app data folder. This code always take the whole path from directory like

'c:\App_Data\w1.xlsx

I don't want this code to go for root URL.I just want to take file inside my website.How can i tweek the code to achieve this

Answer 1

使用Server.MapPath("~/App_Data/" + FileName)代替"/App_Data/" + FileName

Answer 2

Try this:

File.Open(Server.MapPath("~") + FileName, FileMode.Open, FileAccess.Read);

Also check out this answer, it has pretty good explanation of MapPath

Server.MapPath("."), Server.MapPath("~"), Server.MapPath(@"\\"), Server.MapPath("/"). What is the difference?

Answer 3

尝试使用

Server.MapPath('~/App_Data/' + FileName)