Class VisibilityConverter

Namespace

Tudormobile.IronLedgerLib.UI.Wpf.Converters

Assembly

Tudormobile.IronLedgerLib.UI.Wpf.dll

Converts a value to a Visibility based on whether the value is considered "present" (visible) or "absent" (non-visible).

public class VisibilityConverter : IValueConverter

Inheritance

object

VisibilityConverter

Implements

IValueConverter

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Remarks

The following rules determine whether a value is visible:

• null → non-visible.
• A value type equal to its default (e.g. 0, false) → non-visible.
• A string that is null, empty, or whitespace → non-visible.
• All other values → visible.

An optional Visibility converter parameter controls output behavior:

• Collapsed or Hidden — the non-visible state produces that specific value instead of the default Collapsed.
• Visible — inverts the conversion: non-visible values produce Visible and visible values produce Collapsed.

The parameter may be a Visibility value or a case-insensitive string equivalent (e.g. "Visible", "Hidden"), which is the natural form when set via a XAML ConverterParameter attribute.

Constructors

VisibilityConverter()

public VisibilityConverter()

Methods

Convert(object?, Type, object?, CultureInfo)

Converts a value to a Visibility.

public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)

Parameters

value object

The value to evaluate.

targetType Type

The target binding type. This converter always returns Visibility and does not use this parameter; null is accepted.

parameter object

An optional Visibility value, or its case-insensitive string equivalent (e.g. "Visible", "Hidden"), that controls the non-visible state or inverts the result.

culture CultureInfo

The culture to use (unused).

Returns

object

A Visibility value.

ConvertBack(object?, Type, object?, CultureInfo)

Not supported. Always throws NotImplementedException.

public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)

Parameters

value object

targetType Type

parameter object

culture CultureInfo

Returns

object