微软发布 Windows App SDK 2.6.4，完善 WinUI 体验以减少“网页套壳”应用内存占用

微软于10月27日发布Windows App SDK 2.6.4版本，旨在通过简化AI接口访问、升级ONNX Runtime及修复稳定性问题，进一步完善WinUI原生框架体验 1。该更新试图解决因长期缺少基础控件导致开发者转向“网页套壳”技术的问题，目标是减少Electron或WebView2等应用的内存占用，推动Windows 11应用生态回归原生开发以提升性能和内存效率 1。

在功能改进方面，Language Model API不再要求解锁Limited Access Feature (LAF)，内置的ONNX Runtime更新至1.27.1版本 1。此外，该版本修复了TextBox/RichEditBox关闭时的崩溃问题，涉及变更标识CCoreServices_InputServicesTeardownOrder 1。

此前，微软在Build 2026大会上承认WinUI存在“大量功能缺口” 1。为了补齐功能，微软在9月29日发布的Windows App SDK 2.5.4实验版中整合了TableView、Chart以及InkCanvas / InkToolbar等关键功能 1。其中，TableView支持展示、排序、筛选等功能，演示案例显示其可处理11列、5000条数据 1。尽管新控件在部分高级特性上仍有限制，但微软正致力于逐步完善体系 1。

Microsoft released Windows App SDK 2.6.4 on October 27, introducing updates designed to improve the native WinUI framework experience 1. The latest version simplifies access to artificial intelligence interfaces by removing the requirement to unlock Limited Access Features (LAF) for the Language Model API, while also upgrading the built-in ONNX Runtime to version 1.27.1 1. Additionally, the update addresses stability issues, including a specific crash occurring when closing TextBox or RichEditBox components, identified under the change tag CCoreServices_InputServicesTeardownOrder 1.

This release continues Microsoft’s effort to fill critical gaps in the WinUI ecosystem that previously led developers to rely on web-based wrapper technologies like Electron or WebView2, which are often associated with higher memory consumption 1. At Build 2026, Microsoft acknowledged that WinUI suffered from "significant feature gaps," prompting the development of experimental releases such as Windows App SDK 2.5.4 on September 29, which introduced key controls including TableView, Chart, and InkCanvas/InkToolbar 1. Although new controls like TableView still have limitations regarding certain advanced features, they support essential functions such as display, sorting, and filtering, with demos showing the capability to handle datasets of 5,000 rows across 11 columns 1. These incremental improvements aim to restore confidence in native Windows application development, ultimately optimizing performance and memory efficiency within the Windows 11 environment 1.