Solved

Help with over writing xml file

Posted on 2014-04-28
6
334 Views
Last Modified: 2014-04-29
Hi,

How do I modify the code below to receive a message a file already exist and over write it?

FolderBrowserDialog1.SelectedPath = Application.StartupPath & "\LinkFiles"
        Dim dlgResult As DialogResult
        dlgResult = FolderBrowserDialog1.ShowDialog()
        If dlgResult = DialogResult.OK Then
            System.IO.File.Copy(Application.StartupPath & "\LinkFiles\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml", _
                FolderBrowserDialog1.SelectedPath & "\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml")
        End If

Thanks,

Victor
0
Comment
Question by:vcharles
  • 3
  • 2
6 Comments
 
LVL 22

Expert Comment

by:plusone3055
ID: 40027218
FolderBrowserDialog1.SelectedPath = Application.StartupPath & "\LinkFiles"
        Dim dlgResult As DialogResult
        dlgResult = FolderBrowserDialog1.ShowDialog()
        If dlgResult = DialogResult.OK Then
            System.IO.File.Copy(Application.StartupPath & "\LinkFiles\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml", _
                FolderBrowserDialog1.SelectedPath & "\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml")

' something like this
If My.Computer.FileSystem.FileExists(FolderBrowserDialog1.SelectedPath & "\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml")
) Then
    MsgBox(' file exists do you wnat to overwrite yes/no message here dialog)
if dialog = yes
then
File.Copy('Source here, Path.Combine(sFolder,FolderBrowserDialog1.SelectedPath & "\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml"('source here)), True)
Else
    ' do nothing
End IF
END IF
0
 

Author Comment

by:vcharles
ID: 40028487
Hi,

When I try the code below and the file already exist in the folder I want to save it, I receive error message " File already exist" How do I fix this error?

FolderBrowserDialog1.SelectedPath = Application.StartupPath & "\LinkFiles"
        Dim dlgResult As DialogResult
        dlgResult = FolderBrowserDialog1.ShowDialog()
        If dlgResult = DialogResult.OK Then
            System.IO.File.Copy(Application.StartupPath & "\LinkFiles\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml", _
                FolderBrowserDialog1.SelectedPath & "\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml")
        End If

Thanks,

Victor
0
 
LVL 20

Expert Comment

by:ElrondCT
ID: 40028760
Add a ", True" as a third parameter to the File.Copy method. My apologies for failing to put that in the code when I posted it in the prior question.
0
Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

 

Author Comment

by:vcharles
ID: 40029733
Hi,

It worked. How do I notify the users if the file already exist and give them a choice to overwrite or cancel?

Tnaks,

Victor
0
 
LVL 20

Accepted Solution

by:
ElrondCT earned 500 total points
ID: 40029978
        FolderBrowserDialog1.SelectedPath = Application.StartupPath & "\LinkFiles"
        Dim dlgResult As DialogResult
        dlgResult = FolderBrowserDialog1.ShowDialog()
        Dim NewFileName As String = FolderBrowserDialog1.SelectedPath & "\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml"
        If dlgResult = DialogResult.OK Then
            If My.Computer.FileSystem.FileExists(NewFileName) Then
                dlgResult = MessageBox.Show("File " & NewFileName & " already exists. Overwrite?", "File exists", _
                                            MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2)
                If dlgResult = Windows.Forms.DialogResult.No Then
                    Return
                End If
            End If
            System.IO.File.Copy(Application.StartupPath & "\LinkFiles\LinkFinal" & Trim(LoginForm1.username.Text) & ".xml", _
                NewFileName, True)
        End If

Open in new window

If you don't like having the Return in there to bail out of copying the file, coding gets trickier to copy the file either if there's no already existing file or if they've chosen to overwrite. It may be easiest just to have the Copy method twice, though that's normally not considered best programming practice.
0
 

Author Closing Comment

by:vcharles
ID: 40030430
Thank You.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

821 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