Скачать или смотреть How to Parse JSON Data in VBA to Display Prices in a ListBox and Select Between Them

Learn how to parse JSON data with VBA, extract multiple prices for the same article description, and present these prices in a `ListBox` for user selection.
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Parsing JSON Data to Extract Article Prices and Display Options in a ListBox

Introduction

If you've ever worked with JSON data in Excel and VBA, you may have faced the challenge of extracting relevant information, particularly when dealing with multiple entries for the same field name. Imagine you have a collection of articles where the description appears several times, each linked to a different price. How can you efficiently parse this JSON data and present the various prices to the user? In this post, we will guide you through the process of parsing JSON data, displaying extracted prices in a ListBox, and allowing user selection.

Understanding the Problem

You have JSON formatted data containing articles where a specific field ("description courte") may appear multiple times, each time with a different price. Your goal is to extract these prices and display them in a ListBox so that the user can choose which price to parse into a designated column in your Excel sheet.

The challenge comes with the need to manage the extraction and presentation of this data programmatically using VBA. A common issue is encountering errors like "index does not belong in the selection" when trying to access array elements incorrectly.

The Solution Breakdown

To tackle this problem, we'll break it down into systematic steps:

Step 1: Setting Up the Environment

Ensure you have a VBA environment ready with the necessary references to parse JSON. One popular tool for this is the JsonConverter library in VBA.

Prepare your Excel sheet where the data will be displayed.

Step 2: Fetching and Parsing the JSON Data

We will use the WinHttpRequest object to retrieve data from an API. Here’s how you can structure the code for retrieving and parsing data:

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

Step 3: Extracting Prices and Storing Them

In processing the JSON, you will need to iterate through the records, checking for existing articles in your dictionary or creating new entries:

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

Step 4: Displaying Prices in a ListBox

Once prices are stored, we can show them in a ListBox. Let's assume you have a UserForm with a ListBox control.

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

Step 5: Handling User Selection

In the UserForm, ensure that you capture the selected item correctly when the user makes a selection:

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

Conclusion

By following these steps, you can effectively parse JSON data in VBA, extract prices for articles with the same description, and present these options in a user-friendly manner. This approach not only enhances data handling but also improves user interactivity in Excel applications.

Feel free to adapt and expand upon this solution depending on the specific requirements of your project!