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Presentation corrupts as Excel file used in chart part is missing while building presentation from slideparts. #15

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Presentation corrupts as Excel file used in chart part is missing while building presentation from slideparts. #15

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Presentation corrupts as Excel file used in chart part is missing whi…
ghhkpandey Sep 13, 2019
869a379
Revert "Presentation corrupts as Excel file used in chart part is mis…
ghhkpandey Sep 13, 2019
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Presentation corrupts as Excel file used in chart part is missing whi…
ghhkpandey Sep 13, 2019
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15 changes: 15 additions & 0 deletions OpenXmlPowerTools/PresentationBuilder.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1057,6 +1057,21 @@ private static void CopyChartObjects(ChartPart oldChart, ChartPart newChart)
dataReference.Attribute(R.id).Value = newChart.GetIdOfPart(newPart);
continue;
}
ExtendedPart extendedPart = oldPartIdPair.OpenXmlPart as ExtendedPart;
if (extendedPart != null)
{
ExtendedPart newPart = newChart.AddExtendedPart(extendedPart.RelationshipType, extendedPart.ContentType, ".dat");
using (Stream oldObject = extendedPart.GetStream(FileMode.Open, FileAccess.Read))
using (Stream newObject = newPart.GetStream(FileMode.Create, FileAccess.ReadWrite))
{
int byteCount;
byte[] buffer = new byte[65536];
while ((byteCount = oldObject.Read(buffer, 0, 65536)) != 0)
newObject.Write(buffer, 0, byteCount);
}
dataReference.Attribute(R.id).Value = newChart.GetIdOfPart(newPart);
continue;
}
EmbeddedObjectPart oldEmbeddedObjectPart = oldPartIdPair.OpenXmlPart as EmbeddedObjectPart;
if (oldEmbeddedObjectPart != null)
{
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