How to replace process file itself?

[yxq]

Hello,
I want to update A program file from A.
First startup A, then startup B process from A, close A, B will copy new
file to replace A file.
But system states that A is using.

A code:
////////////////////////////////////////////
Dim objProcess As New Process
objProcess.StartInfo.FileName = "B.exe"
objProcess.Start()
Me.Close()

B code:
///////////////////////////////////////////
IO.File.Copy(NewFile, A.exe, True)

Thank you.

[rowe_newsgroups]

On Aug 28, 8:12 am, "yxq" <[e-mail]:

Hello,
I want to update A program file from A.
First startup A, then startup B process from A, close A, B will copy new
file to replace A file.
But system states that A is using.

A code:
////////////////////////////////////////////
Dim objProcess As New Process
objProcess.StartInfo.FileName = "B.exe"
objProcess.Start()
Me.Close()

B code:
///////////////////////////////////////////
IO.File.Copy(NewFile, A.exe, True)

Thank you.

How much time are you giving "A" to close before trying to run the
code in "B"?

Thanks,

Seth Rowe

[Phill W.]

yxq wrote:

I want to update A program file from A.
First startup A, then startup B process from A, close A, B will copy new
file to replace A file.
But system states that A is using.

A code:
////////////////////////////////////////////
Dim objProcess As New Process
objProcess.StartInfo.FileName = "B.exe"
objProcess.Start()
Me.Close()

B code:
///////////////////////////////////////////
IO.File.Copy(NewFile, A.exe, True)

It /may/ be that B is simply starting up too quickly for the process
running A to get out of the way.

Add a delay (of a few seconds) to the startup code in B and see if that
makes any difference:

Module B
Shared Function Main( ByVal args() as String ) As Integer
System.Threading.Thread.Sleep( 15000 )
System.IO.File.Copy( "A+.exe", "A.exe", True )
Return 0

HTH,
Phill W.