尝试使用 OpenXML 在 docx header 中将文本替换为图像时出错
[英]Error when trying to Replace Text with Image in docx header using OpenXML
问题描述
So up until recently this code worked, and then the users changed the format of the headers.
所以直到最近这段代码才起作用，然后用户改变了标题的格式。
I am using C# and OpenXML to edit the term [Sample Client] out of a header and replacing it with an Image.我正在使用 C# 和 OpenXML 从 header 中编辑术语 [Sample Client] 并将其替换为图像。 This has worked in the past, and actually works with some of the headers, but not others.这在过去有效，实际上适用于某些标题，但不适用于其他标题。 I can't figure out why.我不知道为什么。 The error I get is "Cannot insert the OpenXmlElement "newChild" because it is part of a tree".我得到的错误是“无法插入 OpenXmlElement “newChild”，因为它是树的一部分”。
It fails on the line:它在线上失败：
textPlaceHolder.Parent.InsertAfter<DocumentFormat.OpenXml.Wordprocessing.Drawing>(element, textPlaceHolder);
I have found some answers mentioning that I have to use CloneNode, but I am not sure how to implement that, or why.我发现一些答案提到我必须使用 CloneNode，但我不确定如何实现它，或者为什么。 I could use some assistance.我可以使用一些帮助。
Sorry for the terrible code.对不起，糟糕的代码。
private static string AddImageToHeader(WordprocessingDocument wordDoc, string relationshipId, int xwidth, int yheight)
{
LogWriter log = new LogWriter("");
// Define the reference of the image.
string results = "";
var element =
new DocumentFormat.OpenXml.Wordprocessing.Drawing(
new DW.Inline(
//new DW.Extent() { Cx = 990000, Cy = 792000L },
new DW.Extent() { Cx = xwidth, Cy = yheight },
new DW.EffectExtent()
{
LeftEdge = 0L,
TopEdge = 0L,
RightEdge = 0L,
BottomEdge = 0L
},
new DW.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Header Image"
},
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 = xwidth, Cy = yheight }),
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.
// Search for text holder
Text textPlaceHolder = null;
try
{
foreach (var headerPart in wordDoc.MainDocumentPart.HeaderParts)
{
//Gets the text in headers
textPlaceHolder = headerPart.RootElement.Descendants<DocumentFormat.OpenXml.Wordprocessing.Text>().Where((x) => x.Text.Contains("Sample Client")).First();
// Insert image (the image created with your function) after text place holder.
textPlaceHolder.Parent.InsertAfter<DocumentFormat.OpenXml.Wordprocessing.Drawing>(element, textPlaceHolder);
// Remove text place holder.
textPlaceHolder.Remove();
// }
foreach (var currentText in headerPart.RootElement.Descendants<DocumentFormat.OpenXml.Wordprocessing.Text>())
{
currentText.Text = currentText.Text.Replace("[", "");
currentText.Text = currentText.Text.Replace("]", "");
}
}
}
catch (Exception ex)
{
results = results + "\r\n" + ex.Message.ToString();
log.LogWrite("ERROR adding image to header: "+ex.Message.ToString());
log.ErrorWrite("ERROR adding image to header: " + ex.Message.ToString());
textPlaceHolder = null;
Console.WriteLine(results);
}
if (textPlaceHolder == null)
{
log.ErrorWrite("Error textPlaceHolder is null");
}
else
{
var parent = textPlaceHolder.Parent;
if (!(parent is Run)) // Parent should be a run element.
{
results = results + "\r\nERROR: Parent is not run\r\n";
//log.LogWrite("ERROR: Parent is not run");
}
else
{
// Insert image (the image created with your function) after text place holder.
textPlaceHolder.Parent.InsertAfter<DocumentFormat.OpenXml.Wordprocessing.Drawing>(element, textPlaceHolder);
// Remove text place holder.
textPlaceHolder.Remove();
}
}
return results;
}
1 个解决方案
解决方案1
0 2021-01-26 05:36:26
The issue was that I was using the same ImagePart in each of the headers.问题是我在每个标题中使用了相同的 ImagePart。 I changed my code so that it generated a new ImagePart for each header and it worked.我更改了我的代码，以便它为每个 header 生成一个新的 ImagePart 并且它可以工作。
public string AddImage2(string file, string imageLoc)
{
string results = "";
if (imageLoc != "")
{
try
{
using (WordprocessingDocument document = WordprocessingDocument.Open(file, true))
{
//remove document protection
DocumentFormat.OpenXml.Wordprocessing.DocumentProtection dp = document.MainDocumentPart.DocumentSettingsPart.Settings.GetFirstChild<DocumentFormat.OpenXml.Wordprocessing.DocumentProtection>();
if (dp != null && dp.Enforcement == OnOffValue.FromBoolean(true) && dp.Edit == DocumentFormat.OpenXml.Wordprocessing.DocumentProtectionValues.ReadOnly)
{
log.LogWrite("DOCUMENT PROTECTED");
}
else
{
dp.Enforcement = OnOffValue.FromBoolean(false);
//results = results + "\r\nDOCUMENT NOT PROTECTED\r\n";
//log.LogWrite("Document Not Protected");
}
//end doc protection removal
MainDocumentPart mainPart = document.MainDocumentPart;
try
{
// get conversion factor for image to fit the 200 X 75 image slot
int iWidth = 0;
int iHeight = 0;
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(imageLoc))
{
iWidth = bmp.Width;
iHeight = bmp.Height;
}
double ratio = 1;
if (iHeight > 75)
{
ratio = 75 / (double)iHeight;
}
if ((iWidth * ratio) > 200)
{
ratio = 250 / (double)iWidth;
}
double conversionFactor = ratio * 9525;
iWidth = (int)Math.Round((decimal)iWidth * (decimal)conversionFactor);
iHeight = (int)Math.Round((decimal)iHeight * (decimal)conversionFactor);
// end conversion code
foreach (var headerPart in document.MainDocumentPart.HeaderParts)
{
ImagePart imagePart = headerPart.AddImagePart(ImagePartType.Jpeg);
using (FileStream imageStream = new FileStream(imageLoc, FileMode.Open))
{
imagePart.FeedData(imageStream);
}
string addImageResult = AddImageToHeader(headerPart, headerPart.GetIdOfPart(imagePart), iWidth, iHeight);
results = results + "\r\n" + addImageResult;
//log.LogWrite(addImageResult);
}
results = results + "\r\nImage " + imageLoc + " added to " + file + "\r\n";
log.LogWrite("Image " + imageLoc + " added to " + file);
}
catch (Exception ex)
{
results = results + "\r\nERROR: Unable to add Image. Exception Thrown: \r\n" + ex.Message;
log.LogWrite("ERROR: Unable to add Image. Exception Thrown: " + ex.Message);
log.ErrorWrite("ERROR: Unable to add Image. Exception Thrown: " + ex.Message);
Console.WriteLine(results);
}
}
}
catch (Exception ex)
{
results = results + "\r\nERROR: Document " + file + " Failed to Open\r\n Exception:\r\n" + ex.Message.ToString();
Console.WriteLine(results);
log.LogWrite("ERROR: Document " + file + " Failed to Open\r\n Exception:" + ex.Message.ToString());
log.ErrorWrite("ERROR: Document " + file + " Failed to Open\r\n Exception:" + ex.Message.ToString());
}
}
else
{
results = "\r\nERROR: No Image to add for " + file;
log.LogWrite("ERROR: No Image to add for " + file);
log.ErrorWrite("ERROR: No Image to add for " + file);
}
return results;
}
private string AddImageToHeader(HeaderPart headerPart, string relationshipId, int xwidth, int yheight)
{
// Define the reference of the image.
string results = "";
var element =
new DocumentFormat.OpenXml.Wordprocessing.Drawing(
new DW.Inline(
//new DW.Extent() { Cx = 990000, Cy = 792000L },
new DW.Extent() { Cx = xwidth, Cy = yheight },
new DW.EffectExtent()
{
LeftEdge = 0L,
TopEdge = 0L,
RightEdge = 0L,
BottomEdge = 0L
},
new DW.DocProperties()
{
Id = (UInt32Value)1U,
Name = "Header Image"
},
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 = xwidth, Cy = yheight }),
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.
// Search for text holder
Text textPlaceHolder = null;
try
{
//int iterationcount = 0;
textPlaceHolder = headerPart.RootElement.Descendants<DocumentFormat.OpenXml.Wordprocessing.Text>().Where((x) => x.Text.Contains("Sample Client")).First();
// Insert image (the image created with your function) after text place holder.
//var cloneElement = element.CloneNode();
textPlaceHolder.Parent.InsertAfter<DocumentFormat.OpenXml.Wordprocessing.Drawing>(element, textPlaceHolder);
// Remove text place holder.
textPlaceHolder.Remove();
// }
//clean up brackets
foreach (var currentText in headerPart.RootElement.Descendants<DocumentFormat.OpenXml.Wordprocessing.Text>())
{
currentText.Text = currentText.Text.Replace("[", "");
currentText.Text = currentText.Text.Replace("]", "");
}
}
catch (Exception ex)
{
results = results + "\r\n" + ex.Message.ToString();
log.LogWrite("ERROR adding image to header: "+ex.Message.ToString());
log.ErrorWrite("ERROR adding image to header: " + ex.Message.ToString());
textPlaceHolder = null;
Console.WriteLine(results);
}
if (textPlaceHolder == null)
{
log.ErrorWrite("Error textPlaceHolder is null");
}
return results;
}
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