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ASP.NET Core in .NET 11 Preview 3 teaches the Virtualize component to measure items at runtime, fixing the spacing and scroll jitter that uniform-height assumptions caused.

.NET MAUI 11 Preview 3 adds built-in pin clustering to the Map control on Android and iOS, with ClusteringIdentifier groups and a ClusterClicked event.

EF Core 11 Preview 3 introduces ChangeTracker.GetEntriesForState, a state-filtered enumerator that avoids an extra DetectChanges pass in hot paths like SaveChanges interceptors and audit hooks.

.NET MAUI 11 Preview 3 adds LongPressGestureRecognizer as a first-party gesture, with duration, movement threshold, state events, and command binding, replacing the common Community Toolkit behavior.

Loic Baumann's Typhon project targets 1-2 microsecond ACID commits using ref structs, hardware intrinsics, and pinned memory, proving C# can compete at the systems programming level.

C# 14 lets you overload +=, -=, *=, and friends as void instance methods that mutate the receiver in place, cutting allocations for large value holders like BigInteger-style buffers and tensors.

C# strings sent through Dapper default to nvarchar(4000), forcing SQL Server into implicit conversions and full index scans. Here's how to fix it with DbType.AnsiString.

EF Core 11 groups Cosmos DB writes into transactional batches per container and partition on every SaveChanges, giving best-effort atomicity and fewer roundtrips without any code changes.

GitHub Copilot Modernization is pitched as an Assess, Plan, Execute loop for migrating legacy .NET apps. The assessment phase is where the value lives: an inventory report, categorized blockers, and file-level remediation guidance you can diff like code.

Visual Studio 2026 adds HotReloadAutoRestart, a project-level opt-in that restarts the app when a rude edit would otherwise end the debug session. It is especially useful for Razor and Aspire projects.