.NET developers can now develop a bulk image downloader for business software. Aspose.HTML for .NET is a proper image extraction service that offers a huge stack of classes and methods to programmatically extract images from web. On top of that, there is no complex echo system to use this C# library and you can download images from website in C# easily. In addition, you can extract graphical as well as textual data using this Aspose.HTML for .NET which you can see the implementation here. So, let us start this blog post without stating any word further.
We will cover the following sections in this guide:
- Image Extraction Service Installation
- Download Images From Website in C# - Code Sample
- Online Data Extractor
Image Extraction Service Installation
So, you can parse HTML pages programmatically by installing this C# API. In addition to data extraction, it also enables you to convert HTML pages to other popular file formats. Therefore, have .NET installed on your machine, install this image extraction service by downloading the DLL file or you may the following command into NuGet Package Manager:
PM> Install-Package Aspose.Html
The installation process is very simple, even though if you face any difficulty, you can visit installation instructions here.
Download Images From Website in C# - Code Sample
Now, we can implement the functionality to extract images from web programmatically.
The following steps demonstrate how to download images from website in C#:
- Open a web page you want to extract images from by initializing an object of the HTMLDocument class.
- Collect all “img” elements by calling the GetElementsByTagName method.
- Call the Select method to create a distinct collection of relative image URLs and create absolute image URLs.
- Loop through all the absolute image URLs.
- Create an image request message by initializing an object of the RequestMessage class.
- Extract images by making a call to the Context.Network.Send(request) method.
- Check whether a response is successful and save the image to a local file system by calling the WriteAllBytes method.
The following code sample shows how to programmatically develop a bulk image downloader:
You can see the output in the image below:
Online Data Extractor
There is an online tool powered by Aspose.HTML. However, this enterprise-level online data extractor is equipped with a user-friendly UI and you can perform data extraction with one click. Moreover, it is web-based and requires no account creation. So, just open this tool in a web browser and start important data extraction. In fact, further features will be added to this online tool in the near future.
Extract Images From Web - Get a Free License
You can get a free temporary license to try this image extraction service without evaluation limitations.
Conclusion
We are ending this blog post here and we hope you have learned how to download images from website in C# programmatically. Further, we also went through the steps and the code snippet to develop a bulk image downloader. In addition, you can extract images from web by writing a few lines of code in C# using Aspose.HTML for .NET. So, you can find comprehensive documentation regarding usage and development. Moreover, the API references will give a starting point for .NET developers.
Please stay in touch with aspose.com for the upcoming blog posts.
Help is Available
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Frequently Asked Questions – FAQs
How do I download an image from a URL?
You can download images from website in C# using Aspose.HTML for .NET. Further, please visit this link to learn how to achieve this functionality using this image extraction service.
How to extract data online?
This online data extractor enables you to extract textual and graphical data from websites robustly and efficiently.