Open and read txt file in ASP

Question

I want to open a txt file and read from it here's the code:

StreamReader reader = File.OpenText("TrackData/vehicle_points.txt");

TrckData is a folder in my web application. but i get this error :

Could not find a part of the path 'C:\Program Files (x86)\Common Files\Microsoft Shared\DevServer\10.0\TrackData\vehicle_points.txt'.

My project is not even in C Driver, I don't know where it gets that url.

bobbymcr · Accepted Answer · 2011-12-31 09:22:36Z

ASP.Net applications are stored in a different folder, and here you have given a relative which may vary according to asp.net executable path.

Please use

 string path = Server.MapPath("TrackData/vehicle_points.txt"); StreamReader reader = File.OpenText(path);

this will surely work..

Oded · Accepted Answer · 2011-12-30 09:12:57Z

5

File.OpenText will start with the path being the current directory - this is the directory the executable is in.

You need to give it the correct full path to the file.

answered Dec 30, 2011 at 9:12

Oded

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2 Comments

DeadlyDagger Over a year ago

What if i wanted to run my project on another computer?

Oded Over a year ago

@rNuǝɹɐ - You still need to provide the full path. How you do that is up to you (pick up the root path from configuration, database, anything else).

Vinay · Accepted Answer · 2011-12-30 09:20:03Z

3

Can use

StreamReader reader = File.OpenText(AppDomain.CurrentDomain.BaseDirectory.ToString() + "TrackData/" +fileName);

answered Dec 30, 2011 at 9:20

Vinay

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1 Comment

seagulledge Over a year ago

This works great from a generic class file.

Maximo Dominguez · Accepted Answer · 2017-06-25 16:32:32Z

1

StreamReader sr = new StreamReader(Server.MapPath("~/TrackData/") + Textbox.Text); string read = sr.ReadLine(); if(read != null) { Response.Write(read); } else { Response.Write("nothing to display"); }

edited Jun 25, 2017 at 16:32

Maximo Dominguez

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answered Jun 25, 2017 at 16:03

Surbhi Tanwar

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1 Comment

Maximo Dominguez Over a year ago

Hi, welcome to stackoverflow!! I think your answer could be much more useful if you give an explanation of what was the error instead of dropping some code without any context. Please refer to How to answer

horgh · Accepted Answer · 2012-09-25 13:43:48Z

0

The best answer is the one:

string path = Server.MapPath("filename.txt"); StreamReader rd = new StreamReader(path);

edited Sep 25, 2012 at 13:43

horgh

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answered Sep 25, 2012 at 13:25

gifted lemelody

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1 Comment

Ioannis Karadimas Over a year ago

Perhaps you could add some text explaining why this answer is better than the one that 's already been accepted. using File or StreamReader are different things, so they can't really be compared.

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