Replace image in word document using C#

Recently I’m working on a project in which I need to implement the Find And Replace Image In Word Document Using C#. Our project requirement is that our software can have multiple standard templates in word format.

With the help of MS word, we can do many types of tasks, we can create a resume, write a letter, design wedding cards, write any notice, and in addition, we can do a lot of work. In MS Word, we can design a written word so that it looks more attractive, with the help of this we can increase the size of the words, change the font, make any words bold, etc.
Using MS word we can convert the given letters into different types of colors. With the help of MS Word, we can create any type of document and after editing it, we can do its formatting, open it and view it and we can also share that document.

I created a word template as you can see in the below image. In which we have some content and image. Now our task is to Replace Image with new Image in Word using C#. So lets’ do that.

Add a windows project with a button

Step 1: Install open XML Nuget package for editing the WordDocument

Install-Package DocumentFormat.OpenXml -Version 2.15.0

Write the below code on button Click

 private void button2_Click(object sender, EventArgs e)
        {
            // original template path
            var inputFile = @"E:\WordFile\Template.docx";
            //modify template path where we save modify word template
            var outputFile = @"E:\WordFile\outputword.docx";
            string imagePath = @"E:\WordFile\replacenewimg.JPG";
            //check if file exist or not
            if (System.IO.File.Exists(inputFile))
            {
                WordDocumentService wordDocumentService = new WordDocumentService();
                if (System.IO.File.Exists(inputFile))
                {
                    using (WordprocessingDocument doc = WordprocessingDocument.Open(inputFile, true)) //open source word file
                    {
                        Document document = doc.MainDocumentPart.Document;
                        OpenXmlPackage res = doc.SaveAs(outputFile); // copy it to outfile path for editing
                        res.Close();
                    }
                    using (WordprocessingDocument wordprocessingDocument =
               WordprocessingDocument.Open(outputFile, true))
                    {
                        //get all image inside the document
                        IEnumerable<Drawing> drawings = wordprocessingDocument.MainDocumentPart.Document.Descendants<Drawing>().ToList();
                        foreach (Drawing drawing in drawings)
                        {
                            DocProperties dpr = drawing.Descendants<DocProperties>().FirstOrDefault();
                            //this very importent here we are replacing the image by checking the name
                            if (dpr != null && dpr.Name == "Picture 2")
                            {
                                foreach (DocumentFormat.OpenXml.Drawing.Blip b in drawing.Descendants<DocumentFormat.OpenXml.Drawing.Blip>().ToList())
                                {
                                    OpenXmlPart imagePart = wordprocessingDocument.MainDocumentPart.GetPartById(b.Embed);
                                    using (var writer = new BinaryWriter(imagePart.GetStream()))
                                    {
                                        writer.Write(File.ReadAllBytes(imagePath));
                                    }
                                }
                            }
                        }
                    }

                }

            }
        }

*Important Note

Put debugger on the below line and get the name property of image in the word document and the put condition in the code which image you want to replace.

As you can see in the code, first we are getting all images in a word document and then iterating through each image. and then we put condition which image we want to replace in case we have multiple images in the document.

using (WordprocessingDocument wordprocessingDocument =
               WordprocessingDocument.Open(outputFile, true))
                    {
                        //get all image inside the document
                        IEnumerable<Drawing> drawings = wordprocessingDocument.MainDocumentPart.Document.Descendants<Drawing>().ToList();
                        foreach (Drawing drawing in drawings)
                        {
                            DocProperties dpr = drawing.Descendants<DocProperties>().FirstOrDefault();
                            //this very importent here we are replacing the image by checking the name
                            if (dpr != null && dpr.Name == "Picture 2")
                            {
                                foreach (DocumentFormat.OpenXml.Drawing.Blip b in drawing.Descendants<DocumentFormat.OpenXml.Drawing.Blip>().ToList())
                                {
                                    OpenXmlPart imagePart = wordprocessingDocument.MainDocumentPart.GetPartById(b.Embed);
                                    using (var writer = new BinaryWriter(imagePart.GetStream()))
                                    {
                                        writer.Write(File.ReadAllBytes(imagePath));
                                    }
                                }
                            }
                        }
                    }

Output

* if you have a question please comment

In MS Word, we can share a single document with many people at once, in which we can save the document and also delete it and copy paste it.In today’s time MS word is being used all over the world.MS Word is mostly used in offices, apart from this MS World is also used in schools and colleges.

With the help of MS Word, we can create and format the documents and design it and give them a new look. If you have to do the following types of tasks on a computer such as typing, data entry, accounting, mailing, etc., then you should have the knowledge of MS Word because MS Word is a basic computer knowledge that can be used to work in the computer. It is done in almost all types of fields.

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