ClosedXML添加图像 [英] ClosedXML add image

问题描述

我可以使用OpenXML将图像添加到Excel电子表格中。
但是对于程序的其余部分，我使用ClosedXML来添加数据。
我可以使用列和行索引在特定单元格中添加数据。
如果我可以将图像添加到excel（它当前是一个单独的图层，悬停在单元格上），如何使用ClosedXML将其添加到单元格？

I am able to add in an image to an excel spreadsheet by using OpenXML. However for the rest of the program I use ClosedXML to add data. I can add data at a specific cell using the column and row index. If I can add an image to an excel (It currently is a separate layer it seems, hovering over cells), how can I add it to a cell using ClosedXML?

    //Adds an image to the excel file
    public void AddImageToExcel(SpreadsheetDocument sd, MemoryStream imagestream)
    {
        DrawingsPart dp = sd.WorkbookPart.WorksheetParts.First().AddNewPart<DrawingsPart>();
        ImagePart imgp = dp.AddImagePart(ImagePartType.Jpeg, sd.WorkbookPart.WorksheetParts.First().GetIdOfPart(dp));

        MemoryStream bmstream = new MemoryStream(imagestream.ToArray());
        bmstream.Seek(0, SeekOrigin.Begin);

        MemoryStream fs;
        using (fs = imagestream)
        {
            fs.Position = 0;
            imgp.FeedData(fs);
        }

        DocumentFormat.OpenXml.Drawing.Spreadsheet.NonVisualDrawingProperties nvdp = new DocumentFormat.OpenXml.Drawing.Spreadsheet.NonVisualDrawingProperties();
        nvdp.Id = 1025;
        nvdp.Name = "Chart Image";
        nvdp.Description = "Image";
        DocumentFormat.OpenXml.Drawing.PictureLocks piclocks = new DocumentFormat.OpenXml.Drawing.PictureLocks();
        piclocks.NoChangeAspect = true;
        piclocks.NoChangeArrowheads = true;
        DocumentFormat.OpenXml.Drawing.Spreadsheet.NonVisualPictureDrawingProperties nvpdp = new DocumentFormat.OpenXml.Drawing.Spreadsheet.NonVisualPictureDrawingProperties();
        nvpdp.PictureLocks = piclocks;
        DocumentFormat.OpenXml.Drawing.Spreadsheet.NonVisualPictureProperties nvpp = new DocumentFormat.OpenXml.Drawing.Spreadsheet.NonVisualPictureProperties();
        nvpp.NonVisualDrawingProperties = nvdp;
        nvpp.NonVisualPictureDrawingProperties = nvpdp;

        DocumentFormat.OpenXml.Drawing.Stretch stretch = new DocumentFormat.OpenXml.Drawing.Stretch();
        stretch.FillRectangle = new DocumentFormat.OpenXml.Drawing.FillRectangle();

        DocumentFormat.OpenXml.Drawing.Spreadsheet.BlipFill blipfill = new DocumentFormat.OpenXml.Drawing.Spreadsheet.BlipFill();
        DocumentFormat.OpenXml.Drawing.Blip blip = new DocumentFormat.OpenXml.Drawing.Blip();
        blip.Embed = dp.GetIdOfPart(imgp);
        blip.CompressionState = DocumentFormat.OpenXml.Drawing.BlipCompressionValues.Print;
        blipfill.Blip = blip;
        blipfill.SourceRectangle = new DocumentFormat.OpenXml.Drawing.SourceRectangle();
        blipfill.Append(stretch);

        DocumentFormat.OpenXml.Drawing.Transform2D t2d = new DocumentFormat.OpenXml.Drawing.Transform2D();
        DocumentFormat.OpenXml.Drawing.Offset offset = new DocumentFormat.OpenXml.Drawing.Offset();
        offset.X = 0;
        offset.Y = 0;
        t2d.Offset = offset;
        Bitmap bm = new Bitmap(bmstream);

        DocumentFormat.OpenXml.Drawing.Extents extents = new DocumentFormat.OpenXml.Drawing.Extents();
        extents.Cx = ((long)bm.Width * (long)((float)914400 / bm.HorizontalResolution));
        extents.Cy = ((long)bm.Height * (long)((float)914400 / bm.VerticalResolution));
        bm.Dispose();
        t2d.Extents = extents;
        DocumentFormat.OpenXml.Drawing.Spreadsheet.ShapeProperties sp = new DocumentFormat.OpenXml.Drawing.Spreadsheet.ShapeProperties();
        sp.BlackWhiteMode = DocumentFormat.OpenXml.Drawing.BlackWhiteModeValues.Auto;
        sp.Transform2D = t2d;
        DocumentFormat.OpenXml.Drawing.PresetGeometry prstgeom = new DocumentFormat.OpenXml.Drawing.PresetGeometry();
        prstgeom.Preset = DocumentFormat.OpenXml.Drawing.ShapeTypeValues.Rectangle;
        prstgeom.AdjustValueList = new DocumentFormat.OpenXml.Drawing.AdjustValueList();
        sp.Append(prstgeom);
        sp.Append(new DocumentFormat.OpenXml.Drawing.NoFill());

        DocumentFormat.OpenXml.Drawing.Spreadsheet.Picture picture = new DocumentFormat.OpenXml.Drawing.Spreadsheet.Picture();
        picture.NonVisualPictureProperties = nvpp;
        picture.BlipFill = blipfill;
        picture.ShapeProperties = sp;

        DocumentFormat.OpenXml.Drawing.Spreadsheet.Position pos = new DocumentFormat.OpenXml.Drawing.Spreadsheet.Position();

        //The position corrosponds these numbers. X= 600000 & y = 200000 adds up to 1 cell
        pos.X = 600000;
        pos.Y = 200000;

        Extent ext = new Extent();
        ext.Cx = extents.Cx;
        ext.Cy = extents.Cy;
        AbsoluteAnchor anchor = new AbsoluteAnchor();

        Xdr.Position pp = new Xdr.Position();
        pp.X = 0;
        pp.Y = 0;


        anchor.Position = pp;
        anchor.Position = pos;
        anchor.Extent = ext;
        anchor.Append(picture);
        anchor.Append(new ClientData());
        WorksheetDrawing wsd = new WorksheetDrawing();
        wsd.Append(anchor);
        Drawing drawing = new Drawing();
        drawing.Id = dp.GetIdOfPart(imgp);
        wsd.Save(dp);
        sd.WorkbookPart.WorksheetParts.First().Worksheet.Append(drawing);
        MessageBox.Show("Excel File created");
    }

这是我使用的代码，我在这里找到堆栈溢出的代码。我修改它以使用MemoryStream作为图像。
首先，我遇到的一个问题是我将电子表格文档传递给方法，但是我不确定在ClosedXML中我可以做些什么来解决这个问题
真的很感激任何有关我的方法的帮助走吧。
理想情况下，我很乐意简单地说

This is the code I used, which I found here on stack overflow somewhere. I modified it to use a MemoryStream for the image. So firstly one of the problems I have is that I pass a spreadsheet document to the method, however I'm not sure what I can do in ClosedXML to fix this Really appreciate any help with how I could go about this. Ideally I would love to simply say

ws.Cell(colnum, rownum).Value = AddImageToExcel(wb, ImageToMemoryStream(imagelocation));

感谢您的帮助！

推荐答案

我有点迟到，但万一有人来看我已经为ClosedXML添加（有限的）图像支持。

I little bit late here, but in case someone else comes looking I've added (limited) image support to ClosedXML.

Fork可以在
找到 https://closedxml.codeplex.com/SourceControl / network / forks / ajwhiteway / ClosedXMLImageSupport

编辑：添加一些细节如何工作。

Adding some detail to how it works.

新类，XLPicture和XLMarker已被添加。

New classes, XLPicture and XLMarker, have been added.

图片可以通过

  XLPicture pic = new XLPicture
  {
    NoChangeAspect = true,
    NoMove = true,
    NoResize = true,
    ImageStream = fIn,
    Name = "Test Image"
  };

截至目前，它只接受流而不是文件，并且它只会吐出JPEG。如果有需求，可以更改此内容。

As of now it only accepts streams, not files, and it only spits out JPEGs. This can be changed if there is demand.

创建图片后，您可以为其创建标记

Once your picture is created you create a marker for where it goes

  XLMarker fMark = new XLMarker
  {
    ColumnId = 2,
    RowId = 2
  };
  pic.AddMarker(fMark);

如果添加单个标记，它会将图像直接嵌入到单元格中。如果您添加2个标记，它将跨越两个标记跨越图像。

If you add a single marker it will embed the image directly into the cell. If you add 2 markers it will span the image across the two markers.

然后将其添加到工作表中

Then to add it to the sheet just

 worksheet.AddPicture(pic);

干杯人。

这篇关于ClosedXML添加图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！