Question 1

How to set up SqlTableDependency with Blazor for real-time updates?

Accepted Answer

SqlTableDependency can be integrated with Blazor server-side; the README includes an example where it updates UI components immediately on database changes. Enable Service Broker, handle the Changed event, and use SignalR or similar to push updates to the client.

Question 2

SqlTableDependency vs SqlDependency: which should I use?

Accepted Answer

Use SqlTableDependency if you need notifications with actual changed values and support for specific change types like insert-only. SqlDependency is better for monitoring queries on views or joins without value delivery, as per the comparison table in the README.

Question 3

Does SqlTableDependency work with .NET Core 3.0 or later?

Accepted Answer

Yes, SqlTableDependency supports .NET Core 2.0 and above, including .NET Core 3.0 and .NET 5/6, as indicated by the badges. Ensure you install the correct NuGet package and check compatibility with your SQL Server version.

Question 4

What permissions does my SQL Server user need for SqlTableDependency?

Accepted Answer

Your user needs permissions like ALTER, CREATE CONTRACT, and VIEW DATABASE STATE, as listed in the README. If not an admin, grant these explicitly; setting executeUserPermissionCheck to false skips the check but may cause exceptions.

Question 5

How to handle connection loss with SqlTableDependency?

Accepted Answer

There's no built-in reconnection; if the connection drops, you must create a new SqlTableDependency instance. Implement error handling in your application to detect disconnections and restart the monitoring process to avoid missing notifications.

Question 6

Can SqlTableDependency monitor multiple tables at once?

Accepted Answer

Yes, but you need a separate SqlTableDependency instance for each table, as each instance is tied to a specific table and model. Manage multiple instances carefully to avoid resource overhead and ensure proper cleanup.

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