Rename Picture Library Image File Programmatically

Question

Dear Experts and Forum Users,

I am stuck with renaming an image file type before it is actually saved to picture library. I am achieving this using a custom web part with file upload and a simple button control.

Please look at the code below (I have added comments so that it is easy for you to understand excactly what I am doing)

If FileUpload.HasFile Then
' Get extension of existing file
Dim ext as String = Path.GetExtension(FileUpload.PostedFile.FileName)
' Assign New Name - 'Test'
FileUpload.SaveAs(how to declare this path + "Test" + ext)
' Upload the Image to Picture Library
pictureLibraryList.RootFolder.Files.Add(FileUpload.FileName, streamImage)
' Finally Update the Picture Library
pictureLibraryList.RootFolder.Update()
End If

Problems with this code

Firstly, it is not working because fileupload control method saveAs() and fileupload control method postedFile.saveAs() both require a rooted path in this case C:\inetput\images and not http:\\url\ some url pointing to picture library - how do I actually rename the file and also save it to the picture library ?

Please can you suggest a workaround for this.

Many Thanks,

Answer 1

Do you need to use your custom web part for anything besides renaming? If you don't really need the web part what I would do is let users upload via the standard sharepoint interface. I would then use a custom event handler on the library to handle the onAdded event (i.e. a new item was added). It is then quite easy to get a reference to the SPListItem which was added, get a reference to it's SPFile object and rename it.

Answer 2

Thanks very much for replying.

Actually, I am have to hide sharepoint interface (as complete site has been branded) from the users and that is why I have written a custom webpart which sits on the insert-new-image.aspx (blank webpart page created from browser). I know I could have done this using the itemAdded event receiver but would like to do it without it.

Although saying that - how would you do this normally? Because even picture library is a SPList isn't it? so how can we add a new item to this list?

eg -

Dim picLib as SPList = SPContext.Current.Web.Lists("myPictureLibrary")
Dim newItem as SPLIstItem = picLib.Items.Add

newItem("Name") = ??

newItem.Update()

Is this possible and how to actually pass new name to the file but upload the image from fileUpload control ?

Thanks.

Answer 3

You can use the FileUpload's FileBytes or FileContent properties and the RootFolder.Files.Add("anynameUrl", FileBytes) or RootFolder.Files.Add("anynameUrl",FileContent).

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certdev.com

Answer 4

You can use the FileUpload's FileBytes or FileContent properties and the RootFolder.Files.Add("anynameUrl", FileBytes) or RootFolder.Files.Add("anynameUrl",FileContent).

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certdev.com

Dear Steve,

Many thanks for replying. Can you please provide some example on this or perhaps some online resource that you might know of. I am not able to figure it out using the example you mentioned.

Waiting to hear back from you..

Thanks,

Answer 5

Thanks all very much for all your input.

This is unbelieveable...!

Just provide the new file name in the following line

pictureLibraryList.RootFolder.Files.Add(abc, streamImage)

And it saves the uploaded image /file as ABC in the picture library. So no need for doing any fileUpload.SaveAs etc.

Thanks,

Answer 6

Hi,

I also trying to upolad images to images library and change the file name before it gets added to library

u were referring to this line of code pictureLibraryList.RootFolder.Files.Add(abc, streamImage)

In that what does streamImage indicate? 

Answer 7

Hi, Image Stream is a variable declared as stream because the image uploaded by user, I am getting it as a stream and then passing it to picture library. Please see the example here -

Dim streamImage As Stream = Nothing
If fleInput.HasFile Then
    streamImage = fleInput.PostedFile.InputStream
End If

Using Site As New SPSite("SITECOLLECTIONURL")
    Using Web As SPWeb = Site.OpenWeb("SITEURL")
        Dim pics As SPList = Web.Lists("PICTURELIBRARYNAME")
        pics.RootFolder.Files.Add( _
            fleInput.FileName, streamImage)
    End Using
End Using

Finally you can also use this code here which is not with stream - http://www.eggheadcafe.com/community/aspnet/69/10138586/uploading-picture-in-picture-library-through-code.aspx

Hope this helps,

Thanks