I'm having a nightmare of a time trying to add a Chart to a MemoryStream in-memory.
I'm creating a Word document on the fly using OpenXML and I have a chart that is also being dynamically generated from data in the database.
I get the template from the database as a byte array, passing that into a method that also takes a business object that holds a bunch of data to populate bookmarks held within that template.
Here's the method:
public Stream Parse(byte[] array, AudiometryReport AudReport)
{
using (MemoryStream Stream = new MemoryStream())
{
Stream.Write(array, 0, (int)array.Length);
Stream.Position = 0;
using (document = WordprocessingDocument.Open(Stream, true))
{
XDocument doc = document.MainDocumentPart.GetXDocument();
List<XElement> bookmarks = doc.Descendants()
.Where(n => n.NodeType == XmlNodeType.Element && n.Name.LocalName == "bookmarkStart")
.ToList();
PropertyInfo[] reportInfo = AudReport.GetType().GetProperties();
foreach (XElement bm in bookmarks)
{
try
{
if (bm.LastAttribute.Value == "AudiometryChart")
{
string partId = InsertImage(document.MainDocumentPart);
var element = AddImageToDocument(document.MainDocumentPart, partId);
//var element = InsertImageXElement(partId);
//bm.ReplaceWith(new XElement(w + "r", element));
}
else
{
string val = reportInfo.Single(x => x.Name == bm.LastAttribute.Value).GetValue(AudReport, null).ToString();
bm.ReplaceWith(new XElement(w + "r",
new XElement(w + "t", val)));
}
}
catch
{ }
}
document.MainDocumentPart.PutXDocument();
//foreach (BookmarkStart bm in (IEnumerable<BookmarkStart>)document.MainDocumentPart.Document.Descendants<BookmarkStart>())
//{
// if (bm.Name == "AudiometryChart")
// {
// // Insert the chart object here.
// //AddImage(document);
// }
// populateStaffDetails(AudReport.Report.Employee, bm);
// populateAudiometryDetails(AudReport, bm);
//}
}
MemoryStream s = new MemoryStream();
Stream.WriteTo(s);
s.Position = 0;
return s;
}
}
The InsertImage image takes the MainDocumentPart and attaches a new ImagePart from the image I stream from the database. I pass the ID of that part back to the calling method.
private string InsertImage(MainDocumentPart docPart)
{
//DrawingsPart dp = docPart.AddNewPart<DrawingsPart>();
//ImagePart part = dp.AddImagePart(ImagePartType.Png, docPart.GetIdOfPart(dp));
ImagePart part = docPart.AddImagePart(ImagePartType.Png);
Chart cht = new ChartBuilder().DoChart(Data, new string[] { "Left", "Right", "Normal" });
using (MemoryStream ms = new MemoryStream())
{
cht.SaveImage(ms, ChartImageFormat.Png);
ms.Position = 0;
part.FeedData(ms);
}
//int count = dp.ImageParts.Count<ImagePart>();
int count = docPart.ImageParts.Count<ImagePart>();
return docPart.GetIdOfPart(part);
}
The last part is some serious nastiness that is allegdly required to add one image to one word document, but what the hell - here it is anyway:
private Run AddImageToDocument(MainDocumentPart docPart, string ImageRelId)
{
string ImageFileName = "Audiometry Chart Example";
string GraphicDataUri = "http://schemas.openxmlformats.org/drawingml/2006/picture";
long imageLength = 990000L;
long imageHeight = 792000L;
var run = new Run(
new Drawing(
new wp.Inline(
new wp.Extent() { Cx = imageLength, Cy = imageHeight },
new wp.EffectExtent()
{
LeftEdge = 19050L,
TopEdge = 0L,
RightEdge = 9525L,
BottomEdge = 0L
},
new wp.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Inline Text Wrapping Picture",
Description = ImageFileName
},
new wp.NonVisualGraphicFrameDrawingProperties(
new a.GraphicFrameLocks() { NoChangeAspect = true }),
new a.Graphic(
new a.GraphicData(
new pic.Picture(
new pic.NonVisualPictureProperties(
new pic.NonVisualDrawingProperties() { Id = (UInt32Value)0U, Name = ImageFileName },
new pic.NonVisualPictureDrawingProperties()),
new pic.BlipFill(
new a.Blip() { Embed = ImageRelId },
new a.Stretch(
new a.FillRectangle())),
new pic.ShapeProperties(
new a.Transform2D(
new a.Offset() { X = 0L, Y = 0L },
new a.Extents() { Cx = imageLength, Cy = imageHeight }),
new a.PresetGeometry(
new a.AdjustValueList()) { Preset = a.ShapeTypeValues.Rectangle }))
) { Uri = GraphicDataUri }))
{
DistanceFromTop = (UInt32Value)0U,
DistanceFromBottom = (UInt32Value)0U,
DistanceFromLeft = (UInt32Value)0U,
DistanceFromRight = (UInt32Value)0U
}
));
return run;
}
So I've solved issues where the memory stream was causing problems by closing prematurely and probably a dozen other unnecessary amateur garden path problems but that image will just not show up in my document. Frustrating. Suggestions or divine inspiration very welcome right now.
(this question has been heavily edited so some answers may not relate to the wording of this question).