How to Convert Chart to Image and Replace it in .Net Core Word?

Syncfusion; Essential; DocIO is a .NET Word library used to create, read, edit, and convert Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can convert a chart to an image and replace it in a Word document using C#.

Steps to convert a chart to an image and replace it in a Word document:

1. Create a new .NET Core console application project.
   
   
2. Install the Syncfusion.DocIORenderer.NET.Core NuGet package as a reference to your .NET Core application from NuGet.org.
   
   

3. Include the following namespaces in the Program.cs file.
   C#

using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
using Syncfusion.DocIORenderer;
using System.Collections.Generic;

4. Use the following code example to convert a chart to an image and replace it in a Word document.
   C#

//Open the file as Stream.
using (FileStream fileStream = new FileStream(Path.GetFullPath(@"Data/Template.docx"), FileMode.Open))
{
   //Load file stream into Word document.
   using (WordDocument wordDocument = new WordDocument(fileStream, FormatType.Docx))
   {
       List<Entity> charts = wordDocument.FindAllItemsByProperty(EntityType.Chart, null, null);
       for (int i=0; i<charts.Count; i++)
       {
           WChart chart = (WChart)charts[i];
           //Get owner paragraph of chart.
           WParagraph paragraph = chart.OwnerParagraph;
           //Get index of the chart in the paragraph.
           int chartIndex = paragraph.ChildEntities.IndexOf(chart);
           //Create an instance of DocIORenderer.
           using (DocIORenderer renderer = new DocIORenderer())
           {
               //Convert chart to an image.
               using (Stream stream = chart.SaveAsImage())
               {
                   //Create an instance of WPicture.
                   WPicture picture = new WPicture(wordDocument);
                   //Load image from stream.
                   picture.LoadImage((stream as MemoryStream).ToArray());
                   //Set width and height of the image.
                   picture.Width = chart.Width;
                   picture.Height = chart.Height;
                   //Add image to the paragraph at chart index.
                   if (chartIndex < paragraph.ChildEntities.Count)
                       paragraph.ChildEntities.Insert(chartIndex, picture);
                   //Remove chart from the paragraph.
                   paragraph.ChildEntities.Remove(chart);
               }
           }
       }
       //Create a file stream.
       using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.Create, FileAccess.ReadWrite))
       {
           //Save the Word document to the file stream.
           wordDocument.Save(outputFileStream, FormatType.Docx);
       }
   }
}

You can download a complete working sample to convert a chart to an image and replace it in a Word document from GitHub.

Take a moment to peruse the documentation where you can find basic Word document processing options along with the features like mail merge, merge, split, and compare Word documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

Conclusion

I hope you enjoyed learning about how to convert chart to image and replace it in .Net Core Word.

You can refer to our ASP.NET Core DocIO feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our ASP.NET Core DocIO example to understand how to create and manipulate data.

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