Class ValueChangingEventArgs<T>

Namespace

Terminal.Gui.App

Assembly

Terminal.Gui.dll

Provides data for events that allow modification or cancellation of a property change in the Cancellable Work Pattern (CWP).

public class ValueChangingEventArgs<T>

Type Parameters

T

The type of the property value, which may be a nullable reference type (e.g., string?).

Inheritance

object

ValueChangingEventArgs<T>

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Used in pre-change events raised by ChangeProperty<T>(T, T, Func<ValueChangingEventArgs<T>, bool>, EventHandler<ValueChangingEventArgs<T>>?, Action<ValueChangedEventArgs<T>>?, EventHandler<ValueChangedEventArgs<T>>?, out T) to allow handlers to modify the proposed value or cancel the change, such as for SchemeName or OrientationHelper.

Constructors

ValueChangingEventArgs(T, T)

Initializes a new instance of the ValueChangingEventArgs<T> class.

Properties

CurrentValue

Gets the current value before the change.

Handled

Gets or sets a value indicating whether the change has been handled. If true, the change is cancelled.

NewValue

Gets or sets the proposed new value, which can be modified by event handlers.

See Also

ValueChangedEventArgs<T>

CWPPropertyHelper