Question

可能重复：
  How to check if a cell has a picture?
  OpenXML: Excel, extracting Cell text and Image/Picture data

我有一个带有4个图像的Excel文档，每个图像位于单元格A1，A2，A3，A4

中

我可以通过工作表中的所有图像进行迭代，但是我需要能够编辑这个函数来为我提供“A1”和“A2”中的图像，例如

    [Test]
    public void IterateThruImages()
    {
        WorkbookPart wbPart = document.WorkbookPart;
        var workSheet = wbPart.WorksheetParts.FirstOrDefault();

        foreach(ImagePart i in workSheet.DrawingsPart.GetPartsOfType<ImagePart>())
        {
            Stream stream = i.GetStream();
            long length = stream.Length;
            byte[] byteStream = new byte[length];
            stream.Read(byteStream, 0, (int)length);

            var imageAsString = Convert.ToBase64String(byteStream);
        }
    }

Answer 1

诀窍是获得图像的关系id“rId”。你可以通过获得行/列的TwoCellAnchor来解决这个问题。然后得到嵌入。用它来获取图像。

    [Test]
    public void GetImageRelationshipIdAndImageOfThatId()
    {
        string row = "1";
        string col = "0";

        WorkbookPart wbPart = document.WorkbookPart;
        var workSheet = wbPart.WorksheetParts.FirstOrDefault();

        TwoCellAnchor cellHoldingPicture = workSheet.DrawingsPart.WorksheetDrawing.OfType<TwoCellAnchor>()
             .Where(c => c.FromMarker.RowId.Text == row && 
                    c.FromMarker.ColumnId.Text == col).FirstOrDefault();

        var picture = cellHoldingPicture.OfType<DocumentFormat.OpenXml.Drawing.Spreadsheet.Picture>().FirstOrDefault();
        string rIdofPicture = picture.BlipFill.Blip.Embed;

        Console.WriteLine("The rID of this Anchor's [{0},{1}] Picture is '{2}'" ,row,col, rIdofPicture);

        ImagePart imageInThisCell = (ImagePart)workSheet.DrawingsPart.GetPartById(rIdofPicture);

    }

OpenXml：在Excel中确定单元格中的图像

1 个答案: