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A guide on resolving common errors when inserting documents into CosmosDB using C# . Learn best practices for database and container management.
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This video is based on the question https://stackoverflow.com/q/64006403/ asked by the user 'Willem de Jong' ( https://stackoverflow.com/u/1444019/ ) and on the answer https://stackoverflow.com/a/64020122/ provided by the user 'gkulshrestha' ( https://stackoverflow.com/u/2380252/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Inserting Documents into CosmosDB with C# - A Quick Guide

Working with databases can sometimes be tricky, especially when errors pop up unexpectedly. If you're using CosmosDB with the SQL API in a local environment, you might encounter a common hiccup when attempting to insert documents. Whether you're building a new feature or handling existing data, understanding how to properly handle insert operations is crucial. This guide aims to clear up a frustrating error that many developers run into: the infamous 404 NotFound error. Let’s dive in!

The Issue at Hand

In the case of inserting a new document into a CosmosDB, you might find yourself confronted with the following error:

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

This error typically indicates that the resource (in this case, the database) you're trying to reach does not exist. However, what makes this particularly confusing is that your query seems to work just fine when you're retrieving documents from the same database. So, what gives?

The Code Review

Let's take a closer look at the code snippet where this issue arises. Here's how you're trying to insert a document into your CosmosDB:

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

In this snippet, you're trying to retrieve a container named Invertory in your CosmosDB database. However, as the error indicates, it seems like the resource (the database or container) does not exist, leading to the aforementioned 404 error.

The Solution: Fixing the Typo

Upon careful review of the provided code, it becomes evident that there's a simple yet critical typo in the database name:

“Invertory” should be corrected to “Inventory”.

After identifying this typo, your revised code should look like this:

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

Verifying the Change

After correcting the typo, it’s essential to verify that:

The database named "Inventory" actually exists in your CosmosDB Emulator.

The container named "Products" is correctly set up within that database.

Once you’ve checked these points, try re-running your insert operation, and you should no longer face the 404 error.

Conclusion

Inserting documents into CosmosDB with C# doesn’t have to be a daunting task. By simply double-checking your resource names for typos, you can easily avoid common pitfalls. Remember, precision in naming is key when it comes to databases. Whether you’re building a new application or managing existing data, maintaining accuracy in your database operations is crucial for a seamless user experience. Happy coding!