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Change QR Code Color with C# REST API

In this step‑by‑step guide you’ll discover how to change QR code color with the C# REST API. By using the Aspose.BarCode Cloud SDK for .NET, we’ll build a custom coloured QR‑code generator and walk through every parameter that customizes the QR‑code image (PNG).

Prerequisite

Steps to Change Color of QR Code with C# Low Code API

  1. Include the Aspose.BarCode Cloud SDK API and Model namespaces to access barcode generation classes
  2. Create a Configuration object and set the API base URL, client ID, and client secret for authentication with Aspose Cloud
  3. Specify the name of the output image file where the generated QR code will be saved
  4. Create a GenerateApi object using the configuration to enable barcode generation
  5. Call the GenerateAsync() method with parameters such as barcode type, input text, image format, and custom foreground/background colors
  6. Create a file stream with the specified file name and copy the generated QR code data into it

These steps summarize how to create a colored QR code with C# RESTful Service. First, connect to Aspose.BarCode Cloud by providing your credentials and setting up the API, then generating a QR code with your chosen text, colors, and image format. Finally, save the QR code to a file on the computer.

Code to Create Colored QR Code with C# .NET-based API

Using this example, you can easily customize a QR‑code’s background color with the C# REST API. A straightforward GET request that specifies the barcode type, the text to encode, the desired colors, size, and rotation returns the QR‑code image as a stream—ready to be saved or embedded directly into your application.

You’ve now mastered generating QR codes in any color you desire. If you ever need a classic black‑and‑white QR, check out our step‑by‑step guide on Generate QR with C# REST API.

 

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