Скачать или смотреть How to Handle Acumatica REST API Exception Messages in C# WinForms Applications

Learn how to get meaningful error messages from the `Acumatica REST API` using C# in your WinForms applications. This guide walks you through the process of handling exceptions effectively.
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This video is based on the question https://stackoverflow.com/q/62521361/ asked by the user 'sreimer' ( https://stackoverflow.com/u/490183/ ) and on the answer https://stackoverflow.com/a/62698221/ provided by the user 'Jerry Kurtz' ( https://stackoverflow.com/u/10235928/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Handling Acumatica REST API Exception Messages in C# WinForms Applications

When developing applications using the Acumatica REST API, effective error handling is crucial. If you are working with a Windows Forms application and implementing the API, you may have encountered a common frustration: receiving vague 500 Internal Server Error messages without useful details. This can make troubleshooting a daunting task. In this guide, we will explore how to improve error handling and retrieve detailed exception messages when dealing with the Acumatica REST API.

The Problem

When using HttpClient in C# , you might notice that your error handling does not provide sufficient information about the root cause of an issue. For instance, while testing with Postman, you gain access to comprehensive inner exception messages, which can significantly aid in debugging. However, when you switch to using HttpClient, the error messages can seem overly basic and uninformative.

Example of the Error Response Received

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While this message indicates there's a problem, it does not explain what went wrong, making it nearly impossible to rectify the issue efficiently.

The Solution

To enhance your error handling and display meaningful messages to users, follow these structured guidelines in your application:

Step 1: Modify the PUT Request

Instead of calling EnsureSuccessStatusCode() directly on the result of the PutAsync() method, you should first await the response. This allows you to capture more detailed information in the event of an error.

Revised Code for PUT Request

Here's an updated version of how to implement the PUT request in your application:

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Step 2: Create a Response Message Class

For deserialization of the JSON error response, define a ResponseMessage class to hold the relevant information from the error response.

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Step 3: Displaying the Error Message

Once you capture the detailed error information, present it to the user meaningfully. This way, users receive actionable insights about what went wrong, enabling them to take corrective action or notify a developer with all necessary context.

Conclusion

By implementing the above methods, you can significantly improve your error handling in Windows Forms applications that utilize the Acumatica REST API. Instead of facing vague error messages, you'll be equipped to provide detailed feedback, helping both users and developers better understand issues and facilitate a quicker resolution. Always remember, clear error messaging is key to a good user experience!