您需要为类ImEventIssue继承ObservableObject。请参考下面的示例代码：
深入瞭解 Microsoft.Maui.Controls 命名空間中的 Microsoft.Maui.Controls.QueryPropertyAttribute.QueryPropertyAttribute。
Update https://learn.microsoft.com/en-gb/dotnet/maui/fundamentals/shell/navigation?view=net-maui-8.0#process-navigation-data-using-a-single-method to specify that the [QueryProperty(...)] attributes don't work with NativeAOT or full trimming. Instead, it's necessary to implement the IQueryAt...
Namespace: Microsoft.Maui.Controls Assembly: Microsoft.Maui.Controls.dll The name of the QueryIcon for use with screen readers. C# 复制 public string QueryIconName { get; set; } Property Value String Applies to 产品版本 .NET MAUI 7, 8, 9 Preview ...
Maui.ApplicationModel.Communication Microsoft.Maui.ApplicationModel.DataTransfer Microsoft.Maui.Authentication Microsoft.Maui.Controls Microsoft.Maui.Controls.Compatibility Microsoft.Maui.Controls.Compatibility.Hosting Microsoft.Maui.Controls.Design Microsoft.Maui.Controls.Foldable Microsoft.Maui.Controls.Handlers ...
.NET MAUI 语言 功能 工作负荷 API 资源 下载.NET 本主题的部分内容可能是由机器翻译。 Search PositionChangedEventArgs PresentationMode ProgressBar PropertyChangingEventArgs PropertyChangingEventHandler PropertyCondition QueryPropertyAttribute QueryPropertyAttribute ...
Maui.Accessibility Microsoft.Maui.Animations Microsoft.Maui.ApplicationModel Microsoft.Maui.ApplicationModel.Communication Microsoft.Maui.ApplicationModel.DataTransfer Microsoft.Maui.Authentication Microsoft.Maui.Controls Microsoft.Maui.Controls AbsoluteLayout 加速器 AcceleratorTypeConverter AccessKeyPlacement ActivityIndicator...
Maui.ApplicationModel.DataTransfer Microsoft.Maui.Authentication Microsoft.Maui.Controls Microsoft.Maui.Controls.Compatibility Microsoft.Maui.Controls.Compatibility.Hosting Microsoft.Maui.Controls.Design Microsoft.Maui.Controls.Foldable Microsoft.Maui.Controls.Handlers Microsoft.Maui.Controls.Handlers.Items...