Convert Excel document to Image in Azure App Service on Linux

13 Jun 20243 minutes to read

Syncfusion XlsIO is a .NET Core Excel library used to create, read, edit and convert Excel documents programmatically without Microsoft Excel or interop dependencies. Using this library, you can convert an Excel document to Image in Azure App Service on Linux.

Steps to convert Excel document to Image in Azure App Service on Linux

Step 1: Create a new ASP.NET Core Web Application (Model-View-Controller).

Create a ASP.NET Core Web App project in visual studio

Step 2: Name the project.

Name the project

Step 3: Select the framework and click Create button.

Framework version

Step 4: Install the following NuGet packages as reference to your project from NuGet.org.

Install Syncfusion.XlsIORenderer.Net.Core NuGet Package
Install SkiaSharp NuGet Package
Install HarfBuzzSharp NuGet Package

NOTE

Starting with v16.2.0.x, if you reference Syncfusion assemblies from trial setup or from the NuGet feed, you also have to add “Syncfusion.Licensing” assembly reference and include a license key in your projects. Please refer to this link to know about registering Syncfusion license key in your applications to use our components.

Step 5: Add a new button in the Index.cshtml as shown below.

CSHTML
@{Html.BeginForm("CreateDocument", "Home", FormMethod.Get);
    {
        <div>
            <input type="submit" value="Create Document" style="width:150px;height:27px" />
        </div>
    }
    Html.EndForm();
}

Step 6: Include the following namespaces in HomeController.cs.

C#
using Syncfusion.XlsIO;
using Syncfusion.XlsIORenderer;

Step 7: Include the below code snippet in HomeController.cs to convert an Excel document to Image.

C#
using (ExcelEngine excelEngine = new ExcelEngine())
{
  IApplication application = excelEngine.Excel;
  application.DefaultVersion = ExcelVersion.Xlsx;
  FileStream excelStream = new FileStream("Sample.xlsx", FileMode.Open, FileAccess.Read);
  IWorkbook workbook = application.Workbooks.Open(excelStream);
  IWorksheet worksheet = workbook.Worksheets[0];

  //Initialize XlsIO renderer.
  application.XlsIORenderer = new XlsIORenderer();

  //Create the MemoryStream to save the image.      
  MemoryStream imageStream = new MemoryStream();

  //Save the converted image to MemoryStream.
  worksheet.ConvertToImage(worksheet.UsedRange, imageStream);
  imageStream.Position = 0;

  //Download image in the browser.
  return File(imageStream, "application/jpeg", "Sample.jpeg");
}