Existing txt File

Hey all,

What is the simplest way to check for an existing file. Every method shown to me in my text and the information gained from the Visual Studio help doesn't seem to work. Each one of them tells me the syntax is wrong. I just want a simple way to check for an existing text file that is in the defualt file location.

MSDN told me to use FileSystem.FileExists(file) - VS would not take this and...

My text Tony Gaddis (VB 2008) shows:

Code:

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If File.Exists(FileName) Then
open file...
Else
Create file
End If

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Neither of these work and I am getting frustrated as hell with this simple task! Can anyone throw me a simple fuction to use in this situation?

Holy **** I got it, my mistake. I also apologize for taking my time writing this post and not seeing the "File Handling" Post a few below mine that was also relevant.

I used this and it took it for some odd reason this time:

Code:

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  If File.Exists(CustomerFile) Then
            MessageBox.Show("File IS THERE!!")
        Else
            MessageBox.Show("FILE IS GONE")
        End If

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The File class is located in the System.IO namespace. Usually, you would have to call it by it's full name, eg:

Code:

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If System.IO.File.Exists(CustomerFile) Then ...

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But, to shorten things, you can use so called Imports. You can import namespaces, and you then no longer have to use the full names, but you can use 'abbreviations', like so:

Code:

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'Top of code:
Imports System.IO

'...

'Somewhere in your code:
If File.Exists(CustomerFile) Then ...

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If you did not import the namespace, VB will tell you it doesn't know the File class. You must have read over something explaining or at least telling you about importing the System.IO namespace.


The same is true (I think!) btw for the FileSystem class you tried the first time (although I'm not sure if it's also in System.IO or in some other namespace).

Please remember to mark your thread resolved.

Quote:

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Originally Posted by Abrium

MSDN told me to use FileSystem.FileExists(file) - VS would not take this

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That would be My.Computer.FileSystem.FileExists.