AddPicture creates invalid file format on .NET Core 2.0 with v 1.0.2 about npoi

[mjarczewski]

Finally I have a workaround for .netCore.
The problem is in generated document.xml. Following code:
var p0 = doc.Paragraphs[0];
var r0 = p0.CreateRun();
r0.AddPicture(image, 6, "logo.png", Units.ToEMU(width), Units.ToEMU(height));
generates xml node:
<wp:docPr name="Drawing 0" descr="logo.png"/>
Attribute id is missing. When you change this node to:
<wp:docPr name="Drawing 0" id="0" descr="logo.png"/>
everything should work. This happens even if you already have images in your doc and only for first record. I couldn’t find the reason and way to fix it (probably something in export part), but if you change this id to other value it will work:
var p0 = doc.Paragraphs[0];
var r0 = p0.CreateRun();
r0.AddPicture(image, 6, "logo.png", Units.ToEMU(width), Units.ToEMU(height));
var docPr = ((NPOI.OpenXmlFormats.Dml.WordProcessing.CT_Drawing)r0.GetCTR().Items[0]) .inline[0].docPr;
docPr.id = 1000;
This is required only for first image in file. If you have more images following code should work too:
var p0 = doc.Paragraphs[0];
var r0 = p0.CreateRun();
r0.AddPicture(image, 6, "logo.png", Units.ToEMU(width), Units.ToEMU(height));
var docPr = ((NPOI.OpenXmlFormats.Dml.WordProcessing.CT_Drawing)r0.GetCTR().Items[0]) .inline[0].docPr;
docPr.id = 1000;
var p1 = doc.Paragraphs[1];
var r1 = p1.CreateRun();
r1.AddPicture(image2, 6, "cat.png", Units.ToEMU(width2), Units.ToEMU(height2));

[LGpan]

I have the same problem.Have you solved your problem?

[DaleBingham]

No I have not yet done that. I see some workaround in the Java version of POI but nothing for the .net core version. I saw a note on "use updated DLLs" for the windows version but I am on Mac OSX.

Sorry just saw this note. Been fixing other things on that same project.

[elydium]

Has anyone been able to find a workaround for this in .NET Core?

[DaleBingham]

I switched to use the OpenXML library straight and it worked well. Dale Bingham

…

On Apr 17, 2018, at 4:49 AM, Bus Wizard ***@***.***> wrote: Has anyone been able to find a workaround for this in .NET Core? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[elydium]

Thanks Dale, I'll give it a try.

[0xhelium]

Finally I have a workaround for .netCore.
The problem is in generated document.xml. Following code:
var p0 = doc.Paragraphs[0];
var r0 = p0.CreateRun();
r0.AddPicture(image, 6, "logo.png", Units.ToEMU(width), Units.ToEMU(height));
generates xml node:
<wp:docPr name="Drawing 0" descr="logo.png"/>
Attribute id is missing. When you change this node to:
<wp:docPr name="Drawing 0" id="0" descr="logo.png"/>
everything should work. This happens even if you already have images in your doc and only for first record. I couldn’t find the reason and way to fix it (probably something in export part), but if you change this id to other value it will work:
var p0 = doc.Paragraphs[0];
var r0 = p0.CreateRun();
r0.AddPicture(image, 6, "logo.png", Units.ToEMU(width), Units.ToEMU(height));
var docPr = ((NPOI.OpenXmlFormats.Dml.WordProcessing.CT_Drawing)r0.GetCTR().Items[0]) .inline[0].docPr;
docPr.id = 1000;
This is required only for first image in file. If you have more images following code should work too:
var p0 = doc.Paragraphs[0];
var r0 = p0.CreateRun();
r0.AddPicture(image, 6, "logo.png", Units.ToEMU(width), Units.ToEMU(height));
var docPr = ((NPOI.OpenXmlFormats.Dml.WordProcessing.CT_Drawing)r0.GetCTR().Items[0]) .inline[0].docPr;
docPr.id = 1000;
var p1 = doc.Paragraphs[1];
var r1 = p1.CreateRun();
r1.AddPicture(image2, 6, "cat.png", Units.ToEMU(width2), Units.ToEMU(height2));

works, thanku