Problem cloning PPTX slides

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Last post 09-08-2009, 10:14 AM by BrightStar. 5 replies.


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07-27-2009, 8:36 AM 190482

BrightStar
Joined on 06-03-2008
Chicago
Posts 85

Problem cloning PPTX slides

Attachment: Present (inaccessible)

I have problems cloning some PPTX slides. The error message is "Oject reference not set to an instance of an object". I do not have problems cloning simple slides with just text, bullet points, etc. However when the slides are more complicated, for example, with graphs, the program would run into this problem. I am attaching two sample presentations. The program has no problem cloning the first three slides. It would fail on the last slide. I suspect it has something to do with the nature of the last slide. The program can complete successfully if I change the loop to stop cloning before the last slide.

The test program is I use is shown below:

    Public Sub CloneSlideEx()
        Dim srcPres As PresentationEx = New PresentationEx("../../Original.ForAspose1.pptx")
        Dim targetPres As PresentationEx = New PresentationEx("../../out.pptx")
        For i As Integer = 0 To srcPres.Slides.Count - 1
            Dim srcSlide As SlideEx = srcPres.Slides(i)
            Dim srcSlideMaster As MasterSlideEx = srcSlide.LayoutSlide.MasterSlide
            Dim index As Integer = targetPres.Masters.AddClone(srcSlideMaster)
            Dim targetSlideMaster As MasterSlideEx = targetPres.Masters(index)
            targetPres.Slides.AddClone(srcSlide, targetSlideMaster)
        Next
        targetPres.Write("../../Output/output.pptx")
    End Sub

Filed under: AddClone;clone;cloning pptx slides

07-27-2009, 11:02 AM 190521 in reply to 190482

alcrus
Joined on 01-21-2004
Posts 4,457

Re: Problem cloning PPTX slides

Thank you for the example. We will investigate it and fix.

Alexey Zhilin
Team Leader
Aspose Tyumen Team
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07-27-2009, 11:12 AM 190522 in reply to 190521

BrightStar
Joined on 06-03-2008
Chicago
Posts 85

Re: Problem cloning PPTX slides

Thank you for the quick response. I gather you have already found the sample slides I provided in a separate posting.

09-08-2009, 8:04 AM 197081 in reply to 190482

BrightStar
Joined on 06-03-2008
Chicago
Posts 85

Re: Problem cloning PPTX slides

Any update on this problem?

09-08-2009, 9:28 AM 197099 in reply to 197081

msabir
Joined on 07-23-2009
Faisalabad, Pakistan
Posts 1,229

Re: Problem cloning PPTX slides

Hi BrightStar,

Your code and slides are working fine on my end. Please download the latest version here and test it.

Muhammad Sabir
Support Assistant Manager
Aspose Sialkot Team
http://www.aspose.com
Aspose - Your File Format Experts

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09-08-2009, 10:14 AM 197114 in reply to 197099

BrightStar
Joined on 06-03-2008
Chicago
Posts 85

Re: Problem cloning PPTX slides

Yes. I do see the latest version 3.1.1.7 does fix the problem. Thanks a lot.