我正在使用OpenXML将图像插入到我的文档中。 Microsoft提供的代码可以工作，但会使图像更小：
public static void InsertAPicture(string document, string fileName)
{
using (WordprocessingDocument wordprocessingDocument = WordprocessingDocument.Open(document, true))
{
MainDocumentPart mainPart = wordprocessingDocument.MainDocumentPart;
ImagePart imagePart = mainPart.AddImagePart(ImagePartType.Jpeg);
using (FileStream stream = new FileStream(fileName, FileMode.Open))
{
imagePart.FeedData(stream);
}
AddImageToBody(wordprocessingDocument, mainPart.GetIdOfPart(imagePart));
}
}
private static void AddImageToBody(WordprocessingDocument wordDoc, string relationshipId)
{
// Define the reference of the image.
var element =
new Drawing(
new DW.Inline(
new DW.Extent() { Cx = 990000L, Cy = 792000L },
new DW.EffectExtent()
{
LeftEdge = 0L,
TopEdge = 0L,
RightEdge = 0L,
BottomEdge = 0L
},
new DW.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Picture 1"
},
new DW.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 = "New Bitmap Image.jpg"
},
new PIC.NonVisualPictureDrawingProperties()),
new PIC.BlipFill(
new A.Blip(
new A.BlipExtensionList(
new A.BlipExtension()
{
Uri =
"{28A0092B-C50C-407E-A947-70E740481C1C}"
})
)
{
Embed = relationshipId,
CompressionState = A.BlipCompressionValues.Print
},
new A.Stretch(
new A.FillRectangle())),
new PIC.ShapeProperties(
new A.Transform2D(
new A.Offset() { X = 0L, Y = 0L },
new A.Extents() { Cx = 990000L, Cy = 792000L }),
new A.PresetGeometry(
new A.AdjustValueList()
) { Preset = A.ShapeTypeValues.Rectangle }))
) { Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture" })
)
{
DistanceFromTop = (UInt32Value)0U,
DistanceFromBottom = (UInt32Value)0U,
DistanceFromLeft = (UInt32Value)0U,
DistanceFromRight = (UInt32Value)0U,
EditId = "50D07946"
});
// Append the reference to body, the element should be in a Run.
wordDoc.MainDocumentPart.Document.Body.AppendChild(new Paragraph(new Run(element)));
}
我需要将图像设为原始大小。我怎样才能做到这一点？ （我已经用Google搜索了如何在此过程之外执行此操作，但这不是我要查找的内容。我必须假设给定代码中存在某种大小属性。）
编辑：更新的代码（仍无效）
public static void InsertAPicture(string document, string fileName)
{
using (WordprocessingDocument wordprocessingDocument = WordprocessingDocument.Open(document, true))
{
MainDocumentPart mainPart = wordprocessingDocument.MainDocumentPart;
ImagePart imagePart = mainPart.AddImagePart(ImagePartType.Jpeg);
using (FileStream stream = new FileStream(fileName, FileMode.Open))
{
imagePart.FeedData(stream);
}
AddImageToBody(wordprocessingDocument, mainPart.GetIdOfPart(imagePart), fileName);
}
}
private static void AddImageToBody(WordprocessingDocument wordDoc, string relationshipId, string fileName)
{
var img = new BitmapImage(new Uri(fileName, UriKind.RelativeOrAbsolute));
var widthPx = img.PixelWidth;
var heightPx = img.PixelHeight;
var horzRezDpi = img.DpiX;
var vertRezDpi = img.DpiY;
const int emusPerInch = 914400;
const int emusPerCm = 360000;
var maxWidthCm = 16.51;
var widthEmus = (long)(widthPx / horzRezDpi * emusPerInch);
var heightEmus = (long)(heightPx / vertRezDpi * emusPerInch);
var maxWidthEmus = (long)(maxWidthCm * emusPerCm);
if (widthEmus > maxWidthEmus)
{
var ratio = (heightEmus * 1.0m) / widthEmus;
widthEmus = maxWidthEmus;
heightEmus = (long)(widthEmus * ratio);
}
// Define the reference of the image.
var element =
new Drawing(
new DW.Inline(
new DW.Extent() { Cx = 990000L, Cy = 792000L },
new DW.EffectExtent()
{
LeftEdge = 0L,
TopEdge = 0L,
RightEdge = 0L,
BottomEdge = 0L
},
new DW.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Picture 1"
},
new DW.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 = "New Bitmap Image.jpg"
},
new PIC.NonVisualPictureDrawingProperties()),
new PIC.BlipFill(
new A.Blip(
new A.BlipExtensionList(
new A.BlipExtension()
{
Uri =
"{28A0092B-C50C-407E-A947-70E740481C1C}"
})
)
{
Embed = relationshipId,
CompressionState = A.BlipCompressionValues.Print
},
new A.Stretch(
new A.FillRectangle())),
new PIC.ShapeProperties(
new A.Transform2D(
new A.Offset() { X = 0L, Y = 0L },
new A.Extents() { Cx = widthEmus, Cy = heightEmus }),
new A.PresetGeometry(
new A.AdjustValueList()
) { Preset = A.ShapeTypeValues.Rectangle }))
) { Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture" })
)
{
DistanceFromTop = (UInt32Value)0U,
DistanceFromBottom = (UInt32Value)0U,
DistanceFromLeft = (UInt32Value)0U,
DistanceFromRight = (UInt32Value)0U,
EditId = "50D07946"
});
// Append the reference to body, the element should be in a Run.
wordDoc.MainDocumentPart.Document.Body.AppendChild(new Paragraph(new Run(element)));
}
答案 0 :(得分：41)
动车组（English Metric Unit -- read this for a good explanation）中的大小在区段（Cx和Cy）中设置。 为了将图片放入DocX，我通常会这样做：
如果EMU中图像的宽度大于最大页面宽度，我会缩放图像的宽度和高度，使图像的宽度等于页面的宽度（当我说页面时，我指的是到“可用”页面，即减去边距）：
var ratio = hEmu / wEmu;
wEmu = maxPageWidthEmu;
hEmu = wEmu * ratio;
然后我使用宽度作为Cx的值，高度作为Cy的值，两者在DW.Extent和A.Extents（ A.Transform2D）的PIC.ShapeProperties。
请注意，emuPerInch值为914400 我正在运行（在服务中），但我现在没有代码。
<强>更新
这是我使用的代码：
var img = new BitmapImage(new Uri(fileName, UriKind.RelativeOrAbsolute));
var widthPx = img.PixelWidth;
var heightPx = img.PixelHeight;
var horzRezDpi = img.DpiX;
var vertRezDpi = img.DpiY;
const int emusPerInch = 914400;
const int emusPerCm = 360000;
var widthEmus = (long)(widthPx / horzRezDpi * emusPerInch);
var heightEmus = (long)(heightPx / vertRezDpi * emusPerInch);
var maxWidthEmus = (long)(maxWidthCm * emusPerCm);
if (widthEmus > maxWidthEmus) {
var ratio = (heightEmus * 1.0m) / widthEmus;
widthEmus = maxWidthEmus;
heightEmus = (long)(widthEmus * ratio);
}
在我的情况下，我的页面的度量单位是厘米，因此您在上面看到的是emusPerCm。
更新2（回答@andw）
要在最短的时间内锁定文件，请使用FileStream将其打开，然后将生成的流传递到StreamSource的{{1}}属性：
BitmapImage答案 1 :(得分：6)
您可以通过这种方式为图像提供原始尺寸：
首先获得文件的宽度和高度：
int iWidth = 0;
int iHeight = 0;
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap("yourFilePath"))
{
iWidth = bmp.Width;
iHeight = bmp.Height;
}
然后以这种方式将像素 >转换为 EMU ：
iWidth = (int)Math.Round((decimal)iWidth * 9525);
iHeight = (int)Math.Round((decimal)iHeight * 9525);
最后在打开文件时给出值，我的意思是代码的这一行：
new DW.Extent() { Cx = 990000L, Cy = 792000L },
将 Cx 和 Cy 替换为您的计算值，使其如下所示：
new DW.Extent() { Cx = iWidth, Cy = iHeight },
请注意，您的代码中有两行必须提供计算值。
然后你的图像是原始尺寸，希望这对某人有帮助。
答案 2 :(得分：2)
此代码适用于我。
来源：http://msdn.microsoft.com/en-us/library/office/bb497430(v=office.15).aspx
public static void Do()
{
string filename = @"c:\temp\m.docx";
byte[] reportData = GetWordReport();
// File.WriteAllBytes(filename, reportData);
//MessageBox.Show("File " + filename + " created");
}
private static byte[] GetWordReport()
{
// using (MemoryStream stream = new MemoryStream())
// {
//var template = GetTemplateData();
//stream.Write(template, 0, template.Length);
using (WordprocessingDocument docx = WordprocessingDocument.Open(@"c:\temp\m.docx", true))
{
// Some changes on docx
docx.MainDocumentPart.Document = GenerateMainDocumentPart(6,4);
var imagePart = docx.MainDocumentPart.AddNewPart<ImagePart>("image/jpeg", "rIdImagePart1");
GenerateImagePart(imagePart);
}
// stream.Seek(0, SeekOrigin.Begin);
// return stream.ToArray();
// }
return null;
}
private static byte[] GetTemplateData()
{
using (MemoryStream targetStream = new MemoryStream())
using (BinaryReader sourceReader = new BinaryReader(File.Open(@"c:\temp\m_2.docx", FileMode.Open)))
{
byte[] buffer = new byte[4096];
int num = 0;
do
{
num = sourceReader.Read(buffer, 0, 4096);
if (num > 0)
targetStream.Write(buffer, 0, num);
}
while (num > 0);
targetStream.Seek(0, SeekOrigin.Begin);
return targetStream.ToArray();
}
}
private static void GenerateImagePart(OpenXmlPart part)
{
using (Stream imageStream = File.Open(@"c:\temp\image002.jpg", FileMode.Open))
{
part.FeedData(imageStream);
}
}
private static Document GenerateMainDocumentPart(int cx,int cy)
{
long LCX = cx*261257L;
long LCY = cy*261257L;
var element =
new Document(
new Body(
new Paragraph(
new Run(
new RunProperties(
new NoProof()),
new Drawing(
new wp.Inline(
new wp.Extent() { Cx = LCX, Cy = LCY },
new wp.EffectExtent() { LeftEdge = 0L, TopEdge = 19050L, RightEdge = 0L, BottomEdge = 0L },
new wp.DocProperties() { Id = (UInt32Value)1U, Name = "Picture 0", Description = "Forest Flowers.jpg" },
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 = "Forest Flowers.jpg" },
new pic.NonVisualPictureDrawingProperties()),
new pic.BlipFill(
new a.Blip() { Embed = "rIdImagePart1", CompressionState = a.BlipCompressionValues.Print },
new a.Stretch(
new a.FillRectangle())),
new pic.ShapeProperties(
new a.Transform2D(
new a.Offset() { X = 0L, Y = 0L },
new a.Extents() { Cx = LCX, Cy = LCY }),
new a.PresetGeometry(
new a.AdjustValueList()
) { Preset = a.ShapeTypeValues.Rectangle }))
) { Uri = "http://schemas.openxmlformats.org/drawingml/2006/picture" })
) { DistanceFromTop = (UInt32Value)0U, DistanceFromBottom = (UInt32Value)0U, DistanceFromLeft = (UInt32Value)0U, DistanceFromRight = (UInt32Value)0U }))
) { RsidParagraphAddition = "00A2180E", RsidRunAdditionDefault = "00EC4DA7" },
new SectionProperties(
new PageSize() { Width = (UInt32Value)11906U, Height = (UInt32Value)16838U },
new PageMargin() { Top = 1440, Right = (UInt32Value)1800U, Bottom = 1440, Left = (UInt32Value)1800U, Header = (UInt32Value)851U, Footer = (UInt32Value)992U, Gutter = (UInt32Value)0U },
new Columns() { Space = ((UInt32Value)425U).ToString() },
new DocGrid() { Type = DocGridValues.Lines, LinePitch = 312 }
) { RsidR = "00A2180E", RsidSect = "00A2180E" }));
return element;
}
答案 3 :(得分：0)
由于这是搜索图像和OpenXml时的首批热门软件之一，而且世界已经变了一点，我想分享@ssarabando解决方案，用于计算适用于.net核心的EMU，其中System.Drawing使用ImageSharp（从2018年11月起仍为beta版）不可用：
const int emusPerInch = 914400;
const int emusPerCm = 360000;
long widthEmus;
long heightEmus;
Image<Rgba32> img = Image.Load(sourceStream, new PngDecoder());
switch (img.MetaData.ResolutionUnits)
{
case PixelResolutionUnit.PixelsPerCentimeter :
widthEmus = (long)(img.Width / img.MetaData.HorizontalResolution * emusPerCm);
heightEmus = (long)(img.Height / img.MetaData.VerticalResolution * emusPerCm);
break;
case PixelResolutionUnit.PixelsPerInch:
widthEmus = (long)(img.Width / img.MetaData.HorizontalResolution * emusPerInch);
heightEmus = (long)(img.Height / img.MetaData.VerticalResolution * emusPerInch);
break;
case PixelResolutionUnit.PixelsPerMeter:
widthEmus = (long)(img.Width / img.MetaData.HorizontalResolution * emusPerCm * 100);
heightEmus = (long)(img.Height / img.MetaData.VerticalResolution * emusPerCm * 100);
break;
default:
widthEmus = 2000000;
heightEmus = 2000000;
break;
}
希望这会节省别人的时间。
答案 4 :(得分：0)
这是在Net Core中为我工作并已实现here的地方。
long iWidth = 0;
long iHeight = 0;
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(fullPathToImageFile))
{
iWidth = bmp.Width;
iHeight = bmp.Height;
}
iWidth = (long)Math.Round((decimal)iWidth * 9525);
iHeight = (long)Math.Round((decimal)iHeight * 9525);
double maxWidthCm = 17.4; // Our current margins gives us 17.4cm of space
const int emusPerCm = 360000;
long maxWidthEmus = (long)(maxWidthCm * emusPerCm);
if (iWidth > maxWidthEmus) {
var ratio = (iHeight * 1.0m) / iWidth;
iWidth = maxWidthEmus;
iHeight = (long)(iWidth * ratio);
}