C# conventionally uses Allman brace style — opening braces appear on their own line, unlike Java or JavaScript which use K&R (same-line) braces. Microsoft's official C# coding conventions specify Allman style, and tools like Roslyn Analysers, StyleCop, and the .NET SDK enforce this. The main argument for Allman style is that it makes block boundaries visually distinct and easier to scan.

Frequently Asked Questions

var lets the compiler infer the type from the right-hand side. Microsoft recommends using var when the type is obvious from context (e.g. var user = new User()) and explicit types when the type isn't clear. var cannot be used for fields or when the right side doesn't have a clear type.

Introduced in C# 8.0, nullable reference types (string?, User?) add compile-time null safety to reference types. When enabled, the compiler warns you if you dereference a potentially-null reference or assign null to a non-nullable type. They are enabled by default in .NET 6+ projects.

await asynchronously waits for a Task to complete without blocking the thread, allowing other work to proceed. Task.Result synchronously blocks the current thread until the Task completes, which can cause deadlocks in ASP.NET contexts. Always use await in async methods.

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Frequently Asked Questions

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