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Learn how to effectively add a new row with foreign keys using just their IDs in C# Entity Framework Code-First, without unnecessary database queries.
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Efficiently Adding Rows with Foreign Keys in C# Entity Framework Code-First

When working with databases in C# using Entity Framework, developers often find themselves needing to add new records that reference other records through foreign keys. In this guide, we will explore how to efficiently add a new notification row with foreign key relationships without constantly querying the database for related records.

The Problem

Suppose you have the following classes representing your Notifications, NotificationFreqs, and NotificationStatus in your database model:

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

When adding a new Notification, you might be tempted to fetch each foreign key record from the database using separate queries, like so:

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

This method is not only inefficient—it involves hitting the database multiple times—but also cumbersome when you can achieve the same results more effectively.

The Efficient Solution

To avoid the inefficiencies of querying the database each time you need to add a row with foreign keys, you can modify your Notifications class to include optional properties representing the IDs of your foreign entities. This way, you can set the foreign key values directly rather than relying on the navigation properties.

Step 1: Update the Class Structure

Modify the Notifications class by including foreign key ID fields for NotificationType, Frequency, and Status:

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

Step 2: Set the Foreign Key Values Directly

Now, you can create a new Notifications object and assign the foreign key ID values directly without fetching the corresponding entities from the database:

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

Key Benefits of This Method

Reduced Database Calls: By assigning the foreign key IDs directly, you minimize the number of queries made to the database, improving performance dramatically.

Simplified Code: This approach simplifies your code, making it cleaner and more maintainable.

Preservation of Data Normalization: You still maintain the relational integrity of your database, keeping your data normalized.

Conclusion

By adjusting your class structure and utilizing foreign key ID properties in Entity Framework Code-First, you can efficiently manage relationships while creating new records. This method not only enhances performance by limiting unnecessary database queries but also ensures your code remains tidy and easy to maintain. Happy coding!