Class EmptyObjectToObjectConverter

This class converts an object value into a an object (if the value is null returns the false value). Can be used to bind a visibility, a color or an image to the value of an object.

Inheritance

System.Object

EmptyObjectToObjectConverter

EmptyCollectionToObjectConverter

EmptyStringToObjectConverter

Implements

Microsoft.UI.Xaml.Data.IValueConverter

Namespace: Syncfusion.UI.Xaml.Core

Assembly: Syncfusion.Core.WinUI.dll

Syntax

public class EmptyObjectToObjectConverter : DependencyObject, IValueConverter

Constructors

EmptyObjectToObjectConverter()

Declaration

public EmptyObjectToObjectConverter()

Fields

EmptyValueProperty

Identifies the EmptyValue property.

Declaration

public static readonly DependencyProperty EmptyValueProperty

Field Value

Type
Microsoft.UI.Xaml.DependencyProperty

NotEmptyValueProperty

Identifies the NotEmptyValue property.

Declaration

public static readonly DependencyProperty NotEmptyValueProperty

Field Value

Type
Microsoft.UI.Xaml.DependencyProperty

Properties

EmptyValue

Gets or sets the value to be returned when the object is either null or empty

Declaration

public object EmptyValue { get; set; }

Property Value

Type
System.Object

NotEmptyValue

Gets or sets the value to be returned when the object is neither null nor empty

Declaration

public object NotEmptyValue { get; set; }

Property Value

Type
System.Object

Methods

CheckValueIsEmpty(Object)

Checks value for emptiness.

Declaration

protected virtual bool CheckValueIsEmpty(object value)

Parameters

Type	Name	Description
System.Object	value	Value to be checked.

Returns

Type	Description
System.Boolean	True if value is null, false otherwise.

Convert(Object, Type, Object, String)

Convert a boolean value to an other object.

Declaration

public object Convert(object value, Type targetType, object parameter, string language)

Parameters

Type	Name	Description
System.Object	value	The source data being passed to the target.
System.Type	targetType	The type of the target property, as a type reference.
System.Object	parameter	An optional parameter to be used to invert the converter logic.
System.String	language	The language of the conversion.

Returns

Type	Description
System.Object	The value to be passed to the target dependency property.

ConvertBack(Object, Type, Object, String)

Not implemented

Declaration

public object ConvertBack(object value, Type targetType, object parameter, string language)

Parameters

Type	Name	Description
System.Object	value	The target data being passed to the source.
System.Type	targetType	The type of the target property, as a type reference (System.Type for Microsoft .NET, a TypeName helper struct for Visual C++ component extensions (C++/CX)).
System.Object	parameter	An optional parameter to be used to invert the converter logic.
System.String	language	The language of the conversion.

Returns

Type	Description
System.Object	The value to be passed to the source object.

Implements

Microsoft.UI.Xaml.Data.IValueConverter