Sometimes you may encounter a situation where you need to replace images in a Word document. For example, if you are creating a resume from a template, you may need to replace the profile picture in the template with your own photo. In this article, we will show you how to replace images in a Word document in C# and VB.NET using Spire.Doc for .NET.
Install Spire.Doc for .NET
To begin with, you need to add the DLL files included in the Spire.Doc for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.Doc
Replace Image with New Image in Word in C# and VB.NET
To replace an image in a Word document with another image, you need to loop through the elements of the document, find the images and add them to a list, then get the image that you want to replace from the list and call the DocPicture.LoadImage() method to replace it with another image.
The following are the detailed steps:
- Initialize an instance of the Document class.
- Load a Word document using Document.LoadFromFile() method.
- Initialize an instance of the List class.
- Iterate through all sections in the document.
- Iterate through all paragraphs in each section.
- Iterate through all child objects in each paragraph.
- Find the images and add them to the list.
- Get a specific image from the list and replace it with another image using DocPicture.LoadImage() method.
- Save the result document using Document.SaveToFile() method.
- C#
- VB.NET
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Collections.Generic;
using System.Drawing;
namespace ReplaceImageWithImage
{
internal class Program
{
static void Main(string[] args)
{
//Initialize an instance of the Document class
Document doc = new Document();
//Load a Word document
doc.LoadFromFile("Sample.docx");
//Initialize an instance of the List class
List pictures = new List();
//Iterate through all sections in the document
foreach (Section sec in doc.Sections)
{
//Iterate through all paragraphs in each section
foreach (Paragraph para in sec.Paragraphs)
{
//Iterate through all child objects in each paragraph
foreach (DocumentObject docObj in para.ChildObjects)
{
//Find the images and add them to the list
if (docObj.DocumentObjectType == DocumentObjectType.Picture)
{
pictures.Add(docObj);
}
}
}
}
//Replace the first picture in the list with another image
DocPicture picture = pictures[0] as DocPicture;
picture.LoadImage(Image.FromFile(@"doc.png"));
//Save the result document
doc.SaveToFile("ReplaceWithNewImage.docx", FileFormat.Docx2013);
}
}
}
Replace Image with Text in Word in C# and VB.NET
Spire.Doc doesn’t provide a direct method to replace image with text, but you can achieve this task by inserting the text at the image location and then removing the image from the document.
The following steps demonstrate how to replace all images in a Word document with text:
- Initialize an instance of the Document class.
- Load a Word document using Document.LoadFromFile() method.
- Iterate through all sections in the document.
- Iterate through all paragraphs in each section.
- Initialize an instance of the List class.
- Iterate through all child objects in each paragraph.
- Find the images and add them to the list.
- Iterate through the images in the list.
- Get the index of the image in the paragraph using Paragraph.ChildObjects.Indexof() method.
- Initialize an instance of TextRange class and set text for the text range through TextRange.Text property.
- Insert the text range at the image location using Paragraph.ChildObjects.Insert() method.
- Remove the image from the paragraph using Paragraph.ChildObjects.Remove() method.
- Save the result document using Document.SaveToFile() method.
- C#
- VB.NET
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Collections.Generic;
namespace ReplaceImageWithText
{
internal class Program
{
static void Main(string[] args)
{
//Initialize an instance of the Document class
Document doc = new Document();
//Load a Word document
doc.LoadFromFile("Sample.docx");
int j = 1;
//Iterate through all sections in the document
foreach (Section sec in doc.Sections)
{
//Iterate through all paragraphs in each section
foreach (Paragraph para in sec.Paragraphs)
{
//Initialize an instance of the List class
List pictures = new List();
//Find the images and add them to the list
foreach (DocumentObject docObj in para.ChildObjects)
{
if (docObj.DocumentObjectType == DocumentObjectType.Picture)
{
pictures.Add(docObj);
}
}
//Iterate through all images in the list and replace them with text "Here is image {image index}"
foreach (DocumentObject pic in pictures)
{
int index = para.ChildObjects.IndexOf(pic);
TextRange range = new TextRange(doc);
range.Text = string.Format("Here is image-{0}", j);
para.ChildObjects.Insert(index, range);
para.ChildObjects.Remove(pic);
j++;
}
}
}
//Save the result document
doc.SaveToFile("ReplaceWithText.docx", FileFormat.Docx);
}
}
}
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