Make code stop trying if file doesn't exist?

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So, this is my code:

My.Computer.FileSystem.RenameFile("C:\j\WindowsApplication1.exe", String.Format("{0}.exe", Path.GetRandomFileName().Replace(".", String.Empty)))

which I have written in Form_Load. This code gives my application a random filename. When I open the application I get an error. The error occurs because my application keeps trying to rename the file, but can't find it since the filename has changed to a random name. How can I make the file stop trying to rename the file if the path doesn't exist?

What I have tried:

I have tried solving this with a timer, it works when I open the application the first time. But, when I open the application the second time, I get an error message because the file's name has changed, so it can't find the file path.

Posted 16-Jul-17 5:30am

RealFlare

Updated 16-Jul-17 6:10am

v2

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OriginalGriff · Accepted Answer · 2017-07-16T05:45:00

Solution 1

Try:

VB

Dim newName As String = String.Format("{0}.exe", Path.GetRandomFileName().Replace(".", ""))
Dim oldName As String = "C:\j\WindowsApplication1.exe"
If File.Exists(oldName) Then
	File.Move(oldName, newName)
End If

Posted 16-Jul-17 5:45am

OriginalGriff

Comments

[no name] 16-Jul-17 13:59pm

Thanks for help and reply! :)

OriginalGriff 16-Jul-17 14:29pm

You're welcome!

Atlapure Ambrish · Accepted Answer · 2017-07-16T06:10:00

Solution 2

As you mentioned, I assume your code is working as expected, the problem is just that it is still trying to rename even if path does exists. Considering this, just add the below check before rename.

If File.Exists(fileName)

enclose your code in this if condition.

Posted 16-Jul-17 6:10am

Atlapure Ambrish

Comments

[no name] 16-Jul-17 13:50pm

Hey, I don't understand where I should insert If File.Exists(fileName), can you give me your source in my source? Because I get errors

Atlapure Ambrish 17-Jul-17 6:38am

If File.Exists("C:\j\WindowsApplication1.exe")
{
My.Computer.FileSystem.RenameFile("C:\j\WindowsApplication1.exe",
String.Format("{0}.exe", Path.GetRandomFileName().Replace(".", String.Empty)))
}

[no name] 16-Jul-17 13:59pm

Thanks for help and reply! :)

Atlapure Ambrish 17-Jul-17 6:45am

You welcome!

Please don't down vote the answer, if you don't understand do ask questions.