How to use System.Windows.Forms.Analyzers

System.Windows.Forms.Analyzers analyzers and source generators are shipped inbox with Windows Desktop .NET SDK, and are automatically referenced for Window Forms .NET applications.

`MissingPropertySerializationConfiguration`

MissingPropertySerializationConfiguration checks for missing DesignerSerializationVisibilityAttribute on properties of classes which are derived from Control and could potentially serialize design-time data by the designer without the user being aware of it.

WFO1000: Missing property serialization configuration.

Properties of classes derived from Control should have DesignerSerializationVisibilityAttribute set to DesignerSerializationVisibility.Content or DesignerSerializationVisibility.Visible.

Item	Value
Category	WinForms Security
Enabled	True
Severity	Error
CodeFix	False
Added in	NET9.0

`AvoidPassingFuncReturningTaskWithoutCancellationToken`

AvoidPassingFuncReturningTaskWithoutCancellationToken checks parameters passed to Control.InvokeAsync. It suggests to use a cancellation token when passing a task to these methods.

WFO2001: Task is being passed to InvokeAsync without a cancellation token.

Avoid passing a Func<T> to InvokeAsync where T is a Task or ValueTask, unless your intention is for the delegate to simply be kicked off as an unsupervised task. Instead, use Func<CancellationToken, ValueTask> or Func<CancellationToken, ValueTask<T>>, so that the delegate passed to InvokeAsync can be awaited, allowing exceptions to be properly handled.

Item	Value
Category	WinForms Usage
Enabled	True
Severity	Warning
CodeFix	False
Added in	NET9.0

`ImplementITypedDataObject`

ImplementITypedDataObject checks custom implementations of the managed IDataObject interface and suggests to also implement the ITypedDataObject interface.

WFO1001: `IDataObject` type does not implement `ITypedDataObject`.

Types should implement ITypedDataObject to support best practices when interacting with data. Types will not work with typed APIs in Clipboard and other data exchange scenarios if they only implement IDataObject.

Item	Value
Category	WinForms Security
Enabled	True
Severity	Warning
CodeFix	False
Added in	NET10.0

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