How to Convert HTML Tbody to a Collection Using JSON in WebView2 with C#

Learn how to efficiently convert HTML table data to a JSON format in WebView2 and read it in C# . Follow our step-by-step guide!
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How to Convert HTML Tbody to a Collection Using JSON in WebView2 with C#

Managing HTML table data in your applications can often lead to challenges, especially when trying to send structured data between a web view and your C# application. If you're working with WebView2 and need to convert an HTML <tbody> into a collection that can be easily handled in C# , you might find the ExecuteScriptAsync method returning a JObject with limited information, making it difficult to access the full data.

In this guide, we'll explore a straightforward solution to effectively serialize HTML table data into a JSON format that can be easily deserialized in your C# application.

Understanding the Problem

When you attempt to serialize the result of the following JavaScript command:

[[See Video to Reveal this Text or Code Snippet]]

You receive a JObject formatted like so:

[[See Video to Reveal this Text or Code Snippet]]

This structure indicates that while you correctly get the number of rows, the serialization does not capture the content from the individual table cells. The HTMLCollection returned by the rows property cannot be directly converted to JSON, which is why you encounter limitations.

The Solution: JavaScript Function to Extract Table Content

To overcome this limitation, you can create a JavaScript function that converts the data into a two-dimensional array, which can then be serialized to JSON format. This array can be easily deserialized back into a structured format in C# .

Here's how you can do it:

Step 1: JavaScript Function

Create a JavaScript function that retrieves the text content of each cell and organizes it into an array:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Calling the JavaScript Function in C#

With the JavaScript function defined, you can call it from your C# code as follows:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Accessing the Data

Now that you've successfully deserialized the JSON into a multi-dimensional array, you can easily access individual cell values using:

[[See Video to Reveal this Text or Code Snippet]]

rowIndex: The index of the specified row.

cellIndex: The index of the specified cell within that row.

Conclusion

By following these steps, you can efficiently convert an HTML table <tbody> into a JSON format that can be easily managed within your C# applications. This method not only streamlines data handling but also ensures your application operates smoothly by leveraging the integrated capabilities of WebView2 and JSON serialization.

Having a structured approach like this can save you time and reduce headaches when dealing with data between a web view and your application. If you have any questions or suggestions, feel free to share them in the comments below!