Re: Find and update a picture content control in a document

I have a word document where i have a content control (picture). I am using OpenXML to find the content control and then update the picture and save back the document. I was wondering what is the best way to do this. I appreciate any help. Thanks much.

Hi Mohammed,

Here is code that looks for a picture content control with a tag of "MyPicture". It then finds and replaces the image with a new image named "After.jpg".

Code formatting is a bit messed up - this will be fixed in the near future. In the mean time, I posted the code here:

http://openxmldeveloper.org/archive/2011/03/28/131867.aspx


using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;
using DocumentFormat.OpenXml.Drawing;

class Program
{
static void Main(string[] args)
{
using (WordprocessingDocument doc =
WordprocessingDocument.Open("Test1.docx", true))
{
SdtBlock cc = doc.MainDocumentPart.Document.Body.Descendants()
.FirstOrDefault(c =>
{
SdtProperties p = c.Elements().FirstOrDefault();
if (p != null)
{
// Is it a picture content control?
SdtContentPicture pict =
p.Elements().FirstOrDefault();
// Get the alias.
SdtAlias a = p.Elements().FirstOrDefault();
if (pict != null && a.Val == "MyPicture")
return true;
}
return false;
});
string embed = null;
if (cc != null)
{
Drawing dr = cc.Descendants().FirstOrDefault();
if (dr != null)
{
Blip blip = dr.Descendants().FirstOrDefault();
if (blip != null)
embed = blip.Embed;
}
}
if (embed != null)
{
IdPartPair idpp = doc.MainDocumentPart.Parts
.Where(pa => pa.RelationshipId == embed).FirstOrDefault();
if (idpp != null)
{
ImagePart ip = (ImagePart)idpp.OpenXmlPart;
using (FileStream fileStream =
File.Open("After.jpg", FileMode.Open))
ip.FeedData(fileStream);
Console.WriteLine("done");
}
}
}
}
}

Ok, these works only for the first picture control in a docx document. But how can a search more than one ? With a forech ? please give a example

Hi,

I've written a small example that will iterate through all content controls in a document. You can use this axis method to find the specific content control you want, and then use the code that I presented earlier to replace the picture in a picture content control.

http://openxmldeveloper.org/archive/2011/04/11/137383.aspx

-Eric

Hi Eric!

Thanks a lot!!
Your example helps me a lot!
My finish function for serarch and change the picture of a picture content control:

static SdtAlias ChangePictureContentControl(WordprocessingDocument doc, string contentPictureTagName, string fileName)
        {
            try
            {
                foreach (var cc in doc.ContentControls())
                {
                    SdtProperties props = cc.Elements<SdtProperties>().FirstOrDefault();
                    Tag tag = props.Elements<Tag>().FirstOrDefault();
                     if (contentPictureTagName == tag.Val)
                     {
                         SdtAlias a = props.Elements<SdtAlias>().FirstOrDefault();
                        
                         //---------------change the found content picture control picture------------------
                         string embed = null;
                         if (cc != null)
                         {
                             Drawing dr = cc.Descendants<Drawing>().FirstOrDefault();
                             if (dr != null)
                             {
                                 Blip blip = dr.Descendants<Blip>().FirstOrDefault();
                                 if (blip != null)
                                 {
                                     embed = blip.Embed;
                                     if (embed != null)
                                     {
                                         IdPartPair idpp = doc.MainDocumentPart.Parts.Where(pa => pa.RelationshipId == embed).FirstOrDefault();
                                         if (idpp != null)
                                         {
                                             ImagePart ip = (ImagePart)idpp.OpenXmlPart;
                                             using (FileStream fileStream = File.Open(fileName, FileMode.Open))
                                             {
                                                 ip.FeedData(fileStream);
                                             }
                                             Console.WriteLine("Done.");
                                         }

                                     }
                                 }
                             }
                         }

                         //------------------------------------------------------------------------------

                         return a;
                     }
                }

                return null;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return null;
            }
        }

Best regards mimo

Hi Eric,

Tthe code is working fine, but when i open the word document after completing the process, the picture is updating perfectly but still there in the icon is showing in the picutre content control like "Click to insert a picture".

is there any way to diable that after update the image?

Thanks

LathaGokul

Any luck on getting rid of the icon that is covering the picture?

update: an icon saying "click here to insert a picture" was being displayed becuase I placed a picture content control on the document, but did not select an initial image. When you look at the xml of the document I noticed that a ws:showingPlcHdr tag was in the properties collection for the image. By removing this property (of type ShowingPlaceholder) then the placeholder icon goes away.

I've implemented the code above, but sill finding that the content controls are all changing not just the one with the tag - if (contentPictureTagName == tag.Val)?

Hi Weston

Just Try This

Below Code Replace Particular Image

Public string ApplySignature(string fileName, string imageName, string imageTagName, string SignatureName, string SignatureTag,
        string SignatureDesignation, string SignatureDesignationTag)
    {
            string folderPath = AppDomain.CurrentDomain.BaseDirectory + "shared-data\\";
            string imagePath = AppDomain.CurrentDomain.BaseDirectory + "temp\\" + imageName;
            string filePath = folderPath + fileName ;
            ApplyContentControl(SignatureName, SignatureTag, SignatureDesignation, SignatureDesignationTag, fileName);
            //ApplyImage(imagePath, fileName, imageTagName, filePath);
            string[] results = new string[2];
            string strResult = "";

            try
            {
                FileInfo fInfo = new FileInfo(imagePath);

                using (WordprocessingDocument doc = WordprocessingDocument.Open(filePath, true))
                {
                    DocumentFormat.OpenXml.Drawing.Blip blip = this.GetBlip(doc, imageTagName);
                    if (blip != null)
                    {
                        // Add image and change embeded id.
                       
                        blip.Embed = this.AddImagePart(doc, imagePath, imageTagName);
                        doc.Package.Flush();

                        results[0] = "OK";

                        results[1] = "0";
                    }
                }
                GC.Collect();
            }

            catch (Exception ex)
            {
                results[0] = ex.Message;

                results[1] = "-1";
            }

            strResult = results[0] + "|" + results[1];
            GenerateValidationFile(filePath + ".log", strResult);
            return strResult;
    }

public DocumentFormat.OpenXml.Drawing.Blip GetBlip(WordprocessingDocument pDocument, string pPictureContentControlTagName)
    {
        foreach (SdtAlias alias in pDocument.MainDocumentPart.Document.Descendants<SdtAlias>().ToList())
            if (alias.Val == pPictureContentControlTagName)
                return alias.Parent.Parent.Descendants<DocumentFormat.OpenXml.Drawing.Blip>().FirstOrDefault();
        return null;
    }

    public string AddImagePart(WordprocessingDocument pDocument, string pPicturePath, string pImagePartId)
    {
        OpenXmlPart part = pDocument.MainDocumentPart.GetPartById(pImagePartId);
        if (part != null)
        {
            pDocument.MainDocumentPart.DeletePart(part);
        }
        ImagePart imagePart = pDocument.MainDocumentPart.AddImagePart(GetImagePartType(pPicturePath), pImagePartId);
        using (FileStream stream = new FileStream(pPicturePath, FileMode.Open, FileAccess.Read))
        {
            imagePart.FeedData(stream);
        }

        return pImagePartId;
    }

    public ImagePartType GetImagePartType(string imagePath)
    {
        ImagePartType imagePartType = ImagePartType.Bmp;

        switch (System.IO.Path.GetExtension(imagePath).ToUpper())
        {
            case "BMP": imagePartType = ImagePartType.Bmp;
                break;
            case "JPEG":
            case "JPG":
                imagePartType = ImagePartType.Jpeg;
                break;
            case "PNG": imagePartType = ImagePartType.Png;
                break;
            case "GIF": imagePartType = ImagePartType.Gif;
                break;
            default: imagePartType = ImagePartType.Bmp;
                break;
        }
        return imagePartType;
    }

    private string GenerateValidationFile(string filePath, string Message)
    {
        string directoryPath = Path.GetDirectoryName(filePath);
        string finalFilename = Path.GetFileNameWithoutExtension(filePath) + ".log";
        StreamWriter SW;
        SW = System.IO.File.CreateText(directoryPath + @"\" + finalFilename);
        SW.WriteLine(Message);
        SW.Close();
        GC.Collect();
        return finalFilename;
    }

 

Cheers

Jinesh