Update Visual Studio to the Latest Preview
Download and install the Visual Studio preview, and install the .NET 9.0 SDK.
Update the Project File
Open the project file and change <TargetFramework>net8.0</TargetFramework> to <TargetFramework>net9.0</TargetFramework>.
Update NuGet Packages
Open the NuGet package manager and update all NuGet packages to the latest version.
Update the Aspire and MAUI Workloads
Open the Aspire workload and update all Aspire packages to the latest version.
dotnet workload install aspire android ios maccatalyst maui-android maui-desktop maui-mobile maui-windows
To Add Tab Autocompletion to PowerShell for the .NET CLI
https://learn.microsoft.com/zh-cn/dotnet/core/tools/enable-tab-autocomplete