file manipulation.

[vijy]

1. In a button_Click. My application will copy files(.doc,.txt....) from server to client.

2. User might make some changes in files client side,.

3. In another event, the file will copy from client to server.

Prob:
My users, overwriting an old file in the client side with same file name and saving the file from client to server. How to restrict this??

[jmcilhinney]

The Copy method you're using will allow you to specify whether or not to overwrite existing files.

[gep13]

Hey,

To follow on from what jmcilhinney said, have a look at the following:

http://msdn.microsoft.com/en-us/library/9706cfs5.aspx

Hope this helps!!

Gary

[vijy]

The Copy method you're using will allow you to specify whether or not to overwrite existing files.

no sir, they are ovewriting the file manually in the client side.

So i cant avoid the user to overwrite the file..

So if i validate the difference between the modified time? its a correct process,..Any disavantage in this..

Dim sServer As String = "#######\128974_1_En_2_Chapter.xml"
        Dim sClient As String = "C:\Enfocus\Deva\128974_1_En_2_Chapter.xml"
        If File.Exists(sServer) Then
            If File.Exists(sClient) Then File.Delete(sClient)
 
            File.Copy(sServer, sClient)
        End If
        Dim odDate As DateTime = File.GetLastWriteTime(sClient)
        Dim osDate As DateTime = File.GetLastWriteTime(sServer)
 
        'If Date.Compare(osDate, odDate) > 1 Then
        If DateDiff(DateInterval.Second, osDate, odDate)  > 1 Then
            MessageBox.Show("failure-Wrong file")
 
        Else
            MessageBox.Show("Success-Right File")
        End If

[danasegarane]

Hi. Vijay,
I am not able to under stand your question.
Do you mean that if the users places a file with the same name of server and you need to check like the current file is valid file or not using the modified date ?

[gep13]

I read it as they were overwriting the file on the file system and he wanted to use the modified date to see if the version on the client was still the same as the one on the server.

Would comparing the hash of the files not be a better way of checking for equality?

Gary

[vijy]

Hi. Vijay,
I am not able to under stand your question.
Do you mean that if the users places a file with the same name of server and you need to check like the current file is valid file or not using the modified date ?

am pasting a file in local working folder(C:\) from server, user pasting old files and saving into server.i want to restrict this..

[gep13]

I don't think you can restrict it, as such. You might be able to do something with a FileSystemWatcher, but that would involve having it installed on all clients. I think the better way would be with comparing the files on both the client and server before proceeding.

Gary

[danasegarane]

And may be you could do like save the file contents in a temp file and while saving to server check the differences in file content and do the appropriate action

[vijy]

I don't think you can restrict it, as such. You might be able to do something with a FileSystemWatcher, but that would involve having it installed on all clients. I think the better way would be with comparing the files on both the client and server before proceeding.

Gary

is it possible to restrict copying and pasting files in a particlar folder..? but user can edit the file contents...

[gep13]

Hey,

I don't know of a specific solution, but there be something you can do.

I am not sure of the exact problem that you having though. What is the difference between them editing a file, and them overwriting one? At the end of the day, they are still editing the file.

The easiest way would be to restrict their permissions on that folder.

Gary