Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden using our free interactive tool and use it to determine the right price for your IT services. Start calculating Now!
C# File Reading Fails
The following chunk of code "should work":
The folder and file is there on my C drive. However, I get a file not found exception. I am on a Windows 10 Pro machine and using VS2013.
Is System.IO broken?
string[] FilesToRead = { @"C:\mycode\datafiles\foo.txt" };
int FileCount = FilesToRead.Length;
for (int fPtr = 0; fPtr < FileCount; fPtr++)
{
string nextFile = FilesToRead[fPtr];
bool b = File.Exists(nextFile);
string[] lines = System.IO.File.ReadAllLines((nextFile);
}
The folder and file is there on my C drive. However, I get a file not found exception. I am on a Windows 10 Pro machine and using VS2013.
Is System.IO broken?
Do more with
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Try to see if you are able to validate with exists method.
string curFile = @"c:\temp\test.txt";
Console.WriteLine(File.Exists(curFile) ? "File exists." : "File does not exist.");
Also you can try to get fileinfo with this method. This will also give you another way if you are accessing correct or valid file.
// The name of the file.
const string fileName = { @"C:\mycode\datafiles\foo.txt" };
// Create new FileInfo object and get the Length.
FileInfo f = new FileInfo(fileName);
long s1 = f.Length;
In your junk code you can also add a condition..
for (int fPtr = 0; fPtr < FileCount; fPtr++)
{
string nextFile = FilesToRead[fPtr];
bool b = File.Exists(nextFile);
if (b == True)
{
string[] lines = System.IO.File.ReadAllLines((nextFile);
}
}
I created a c:\temp folder in it and put a text file named text.txt.
I executed this code:
string curFile = @"c:\temp\test.txt";
Console.WriteLine(File.Exi
And File does not exist was written to console.
I executed this code:
string curFile = @"c:\temp\test.txt";
Console.WriteLine(File.Exi
And File does not exist was written to console.
Check if permission issue. Try to give full read and write access to temp folder.
Next which user account .net application using..check and try give access to temp folder.
Next which user account .net application using..check and try give access to temp folder.
This is my local machine. I checked permissions on the temp folder (which I created for this test) and the folder gives users:
Can you close your visual studio and try running it under elevated permissions(right click on visual studio and run as administrator) and give this code a try?
What is that little blue dot icon over the file icon in your first screenshot. I do not remember ever seeing something like it on a .txt file. Could it be that some application plays tricks with that file?
Do you have file extensions hidden? If so, perhaps the filename in questions is actually "foo.txt.txt". I've done that on a few occasions. If your file extensions are hidden, try un-hiding them to see if the extension is what you think it is.
Just a thought, do you have file extension hidden in windows? I am asking because I want to make sure your file is not "C:\mycode\datafiles\foo.t
The icon is for text files (sometimes) in windows 10. Here is the property of the file I am attempting to read:
Premium Content
You need an Expert Office subscription to comment.Start Free Trial