Solved

Need help checking existance and deleting a file in VB.Net

Posted on 2014-02-24
3
322 Views
Last Modified: 2014-02-25
I have the following code in my VB.Net app which copies a file from one filepath and moves it to another filepath (see code below).

I want to be able to:
1. Check to see if the file already exists in the destination filepath
2. If the file exists, I want to delete it before copying over the new file
3. Finally, I want to copy the file from the source file path to the destination file path

How do i do this?  Thanks in advance mrotor


MY CURRENT CODE USED TO COPY FILE FROM ONE FILEPATH TO ANOTHER

Dim filename As String = "MYFile.txt" '"TestFile.txt"
Dim source As String = Trim("\\TEST_DIRECTORY\ACCOUNT\")
Dim destination As String = System.IO.Path.Combine("\\FINAL_DIRECTORY\PROD\", filename)
System.IO.File.Copy(source, destination, True)

Open in new window

0
Comment
Question by:mainrotor
3 Comments
 
LVL 11

Accepted Solution

by:
Technodweeb earned 500 total points
ID: 39884389
If My.Computer.FileSystem.FileExists("\\TEST_DIRECTORY\ACCOUNT\MYFile.txt") Then
    File.Delete("\\TEST_DIRECTORY\ACCOUNT\MYFile.txt")
    File.Copy("\\OTHER_TEST_DIRECTORY\ACCOUNT\MYFile.txt","\\TEST_DIRECTORY\ACCOUNT\MYFile.txt")
Else
    MsgBox("File not found.")
End If

Open in new window

0
 
LVL 79

Expert Comment

by:David Johnson, CD, MVP
ID: 39884392
Dim filename As String = "MYFile.txt" 
Dim source As String = Trim("\\TEST_DIRECTORY\ACCOUNT\")
Dim destination As String = System.IO.Path.Combine("\\FINAL_DIRECTORY\PROD\", filename)
dim filesys
Set filesys = CreateObject("Scripting.FileSystemObject")
If filesys.FileExists(destination) Then filesys.DeleteFile destination
End If 
filesys.CopyFile source,destination,true
set filesys = nothing

Open in new window

0
 
LVL 5

Expert Comment

by:Bob Bender
ID: 39884401
I found a block of VB code on MSDN that copies files ( txt and jpg ) from a source folder to a destination folder, then deletes the source folder files.  

Not a big believer in writing the code for anyone.  After all, being able to modify the code to make it do what you want is the goal of all developers.  How else can you learn.


http://msdn.microsoft.com/en-us/library/system.io.file.delete(v=vs.110).aspx?cs-save-lang=1&cs-lang=vb#code-snippet-2


The Try/Catch routine is so that it can throw an exception in case of a problem.

To check that a file exists....

     File.Exists(filename) ? "File exists." : "File does not exist."

The ? in the statement is an IF condition...,  1st option is true, second one (after the :) is false.

Can follow if you have questions

bob
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

816 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now