用OpenXML中的图像替换文本持有人 [英] Replace text holder with image in OpenXML

问题描述

下面，我有使用OpenXML在Word的文档末尾插入图像的代码. 我需要做的是尝试在文档中找到名为[Image Holder]的项，并将其替换为我要传递的图像.

Below I have code that inserts an image at the end of a document in word using OpenXML. What I need to do is try and find and item called [Image Holder] within the document and replace that with the image I'm passing over.

这是将其添加到文档末尾的当前代码

Here is the current code that adds it to the end of a document

        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 = "NGSignature"
                     },
                     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 = "NGSignature.jpg"
                                     },
                                     new PIC.NonVisualPictureDrawingProperties()),
                                 new PIC.BlipFill(
                                     new A.Blip(
                                         new A.BlipExtensionList(
                                             new A.BlipExtension()
                                             {
                                                 Uri =
                                                   "{28A0092B-C50C-407E-A947-70E740481C1C}"
                                             })
                                     )
                                     {
                                         Embed = relationship_id,
                                         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"
                 });

        word_doc.MainDocumentPart.Document.Body.AppendChild(new DocumentFormat.OpenXml.Wordprocessing.Paragraph(new DocumentFormat.OpenXml.Wordprocessing.Run(element)));

更新 好的，我在OpenXML工具中打开了文件，发现以下几行包含了我需要在XML文件中替换的数据.

UPDATE Ok i opened the file in the OpenXML tool and found the following lines that contain the data I need to replace inside the XML file.

<w:r>
    <w:rPr>
      <w:sz w:val="20" />
    </w:rPr>
    <w:instrText xml:space="preserve"> REF NG_MACRO "HOLDER" "3fd95b6f-4c63-42fb-ba2e-dc6d57975c57" </w:instrText>
  </w:r>

和

  <w:r>
    <w:rPr>
      <w:sz w:val="20" />
    </w:rPr>
    <w:t xml:space="preserve">{HOLDER}</w:t>
  </w:r>

第二部分是打开文档时看到的内容. 第一部分我不确定，但是创建它的应用程序会将其放入.

The second part is what I see when I open the document. The first part i'm not sure but the application that creates it puts it in.

要正确执行此操作，我猜测需要删除第1部分，然后用图像部分替换第2部分.

To do this correctly i'm guessing the 1 part needs removed and then the image section to replace the 2nd part.

推荐答案

要将文本持有人替换为给定的图像，请执行以下步骤:

To replace a text holder with an given image use the following steps:

1. 搜索文本占位符.
2. 确定文本占位符的父项
3. 将图像(Drawing元素)插入文本占位符之后.
4. 删除文本位置持有人.

1. Search for the text place holder.
2. Determine the parent of the text place holder
3. Insert the image (Drawing element) after the text place holder.
4. Remove the text palce holder.

下面的代码实现了上述步骤:

The code below implements the steps described above:

// Search for text holder
Text textPlaceHolder = word_doc.MainDocumentPart.Document.Body.Descendants<Text>()
    .Where((x) => x.Text == "$image_tag$").First();

if (textPlaceHolder == null)
{
  Console.WriteLine("Text holder not found!");      
}
else
{
  var parent = textPlaceHolder.Parent;

  if(!(parent is Run))  // Parent should be a run element.
  {
    Console.Out.WriteLine("Parent is not run");
  }
  else
  {
    // Insert image (the image created with your function) after text place holder.        
    textPlaceHolder.Parent.InsertAfter<Drawing>(element, textPlaceHolder);
    // Remove text place holder.
    textPlaceHolder.Remove();
  }
}

您还可以使用内容占位符(SdtElement)代替简单的文本占位符.

You could also use content place holders (SdtElement) instead of simple text place holders.

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