How to "Refresh Data" via VBA in Power Point? - excel

Question

so far I have tried the Chart.Refresh and Chart.Update and also ChartData.UpdateLinks and neither work.
My question is similar to this one only that this code did not work for my ppt
How to update excel embedded charts in powerpoint?
If i could Record Macro like in Excel the steps would be:
Select Chart
Chart Tools > Refresh Data
This is code is what I have managed to write but it fails at "gChart.Application.RefreshData":
Sub refreshchart()
Dim ppApp As PowerPoint.Application, sld As Slide
Dim s As PowerPoint.Shape
Dim gChart As Chart, i As Integer
ppApp.Visible = True
i = 3
Set sld = ActivePresentation.Slides(i)
sld.Select
For Each s In ActivePresentation.Slides(i)
If s.Type = msoEmbeddedOLEObject Then
Set gChart = s.OLEFormat.Object
With gChart.Application
gChart.Application.Refresh
Set gChart = Nothing
End If
Next s
End Sub
The Integer i is included to go from i=1 To 73, but as a test i am using Slide 3. Not all Slides have Charts but most of them have 4 Charts (65 out of 73).

Answer 1

I changed the code a little bit and with this little change, the refresh of the charts works again automatically.
Many times, if you share your excel ppt combo the links break and after restoring them the automated chart refresh doesn`t work.
With the downstanding macro the automated refresh will work again:
Sub REFRESH()
Dim pptChart As Chart
Dim pptChartData As ChartData
Dim pptWorkbook As Object
Dim sld As Slide
Dim shp As Shape
For Each sld In ActivePresentation.Slides
For Each shp In sld.Shapes
If shp.HasChart Then
Set pptChart = shp.Chart
Set pptChartData = pptChart.ChartData
pptChartData.Activate
shp.Chart.REFRESH
On Error Resume Next
On Error GoTo 0
End If
Next
Next
Set pptWorkbook = Nothing
Set pptChartData = Nothing
Set pptChart = Nothing
End Sub
The code below is in a macro in the Excel workbook which also contains the source data. Not sure if the code would be the same running it from PowerPoint. I simply open my Excel Workbook and then have it update the PowerPoint for me.
I have been looking forever to find an answer to this and finally managed to get it to work with a ton of reading and trial-and-error. My problem was that I have a PowerPoint with a lot of graphs that were created with CTRL+C and CTRL+V, so none of them are linked.
This is how I got it to work:
Dim myPresentation As PowerPoint.Presentation
Dim sld As PowerPoint.Slide
Dim shp As PowerPoint.Shape
Dim myChart As PowerPoint.Chart
For Each sld In myPresentation.Slides
For Each shp In sld.Shapes
If shp.HasChart Then
Set myChart = shp.Chart
myChart.ChartData.Activate
myChart.Refresh
End If
Next
Next
I don't know if there is unnecessary code in there but I am just happy that I finally got it to work so I'm not touching it anymore.

Answer 2

This code worked. But it works only if both files are open (the excel if its only one): The Power Point and the Excel with the data. It actually Refreshes all charts one by one.
Sub updatelinks()
Dim sld As Slide, shp As Shape
For Each sld In ActivePresentation.Slides
For Each shp In sld.Shapes
On Error Resume Next
shp.LinkFormat.Update
Next
Next
MsgBox ("Graficos actualizados con éxito")
End Sub
So, If the Excel is on a shared location, the code wont work because it takes too much time to retrieve the data. Im still looking for a way to do this. Thanks!

Answer 3

This may help, It opens and closes the embedded Excel object
For Each s In ActivePresentation.Slides(i)
If s.Type = msoEmbeddedOLEObject Then
s.Select 'select the object
s.OLEFormat.Activate 'Activate it (like 2x click))
ActiveWindow.Selection.Unselect 'To let it close
ActiveWindow.View.GotoSlide s.Slideindex 'make current slide active
End If
Next s