Class UpDownBase<T>

Base class for all controls that provide value manipulation with a Spinner and a text box.

Inheritance
System.Object
DependencyObject
UIElement
FrameworkElement
Control
UpDownBase
UpDownBase<T>
NumericUpDown
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: System.Windows.Controls
Assembly: OpenSilver.dll
Syntax
[TemplatePart(Name = "Text", Type = typeof(TextBox))]
[TemplatePart(Name = "Spinner", Type = typeof(Spinner))]
[StyleTypedProperty(Property = "SpinnerStyle", StyleTargetType = typeof(Spinner))]
public abstract class UpDownBase<T> : UpDownBase
Type Parameters
Name Description
T

Type of Value property.

Constructors

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UpDownBase()

Initializes a new instance of the UpDownBase(of T) class.

Declaration
protected UpDownBase()

Fields

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IsEditableProperty

Identifies the IsEditable dependency property.

Declaration
public static readonly DependencyProperty IsEditableProperty
Field Value
Type Description
DependencyProperty
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ValueProperty

Identifies the Value dependency property.

Declaration
public static readonly DependencyProperty ValueProperty
Field Value
Type Description
DependencyProperty

Properties

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IsEditable

Gets or sets a value indicating whether the value can be manually edited by the end-user.

Declaration
public bool IsEditable { get; set; }
Property Value
Type Description
System.Boolean
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Value

Gets or sets the Value property.

Declaration
public virtual T Value { get; set; }
Property Value
Type Description
T

Methods

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ApplyValue(String)

Processes user input when the TextBox.TextChanged event occurs.

Declaration
protected virtual void ApplyValue(string text)
Parameters
Type Name Description
System.String text

User input.
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FormatValue()

Renders the value property into the textbox text.

Declaration
protected abstract string FormatValue()
Returns
Type Description
System.String

Formatted Value.
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GetValue()

GetValue override to return Value property as object type.

Declaration
public sealed override object GetValue()
Returns
Type Description
System.Object

The Value property as object type.
Overrides
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OnApplyTemplate()

Builds the visual tree for the UpDownBase(of T) control when a new template is applied.

Declaration
public override void OnApplyTemplate()
Overrides
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OnDecrement()

Called by OnSpin when the spin direction is SpinDirection.Increase.

Declaration
protected abstract void OnDecrement()
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OnIncrement()

Called by OnSpin when the spin direction is SpinDirection.Increase.

Declaration
protected abstract void OnIncrement()
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OnIsEditableChanged(Boolean, Boolean)

Called when IsEditable property value changed.

Declaration
protected virtual void OnIsEditableChanged(bool oldValue, bool newValue)
Parameters
Type Name Description
System.Boolean oldValue

The old value.
System.Boolean newValue

The new value.
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OnKeyDown(KeyEventArgs)

Provides handling for the KeyDown event.

Declaration
protected override void OnKeyDown(KeyEventArgs e)
Parameters
Type Name Description
KeyEventArgs e

Key event args.
Overrides
Remarks

Only support up and down arrow keys.

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OnMouseWheel(MouseWheelEventArgs)

Provides handling for the MouseWheel event.

Declaration
protected override void OnMouseWheel(MouseWheelEventArgs e)
Parameters
Type Name Description
MouseWheelEventArgs e

Mouse wheel event args.
Overrides
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OnParseError(UpDownParseErrorEventArgs)

Raises the ParserError event when there is an error in parsing user input.

Declaration
protected virtual void OnParseError(UpDownParseErrorEventArgs e)
Parameters
Type Name Description
UpDownParseErrorEventArgs e

Event args.
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OnParsing(UpDownParsingEventArgs<T>)

Raises the Parsing event, to allow easily hooking into the parse logic.

Declaration
protected virtual void OnParsing(UpDownParsingEventArgs<T> e)
Parameters
Type Name Description
UpDownParsingEventArgs<T> e

The UpDownParsingEventArgs<T> instance containing the event data.
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OnSpin(SpinEventArgs)

Occurs when the spinner spins.

Declaration
protected virtual void OnSpin(SpinEventArgs e)
Parameters
Type Name Description
SpinEventArgs e

Event args.
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OnValueChanged(RoutedPropertyChangedEventArgs<T>)

Raises the ValueChanged event when Value property has changed.

Declaration
protected virtual void OnValueChanged(RoutedPropertyChangedEventArgs<T> e)
Parameters
Type Name Description
RoutedPropertyChangedEventArgs<T> e

Event args.
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OnValueChanging(RoutedPropertyChangingEventArgs<T>)

Raises the ValueChanging event when Value property is changing.

Declaration
protected virtual void OnValueChanging(RoutedPropertyChangingEventArgs<T> e)
Parameters
Type Name Description
RoutedPropertyChangingEventArgs<T> e

Event args.
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ParseValue(String)

Called by ApplyValue to parse user input.

Declaration
protected abstract T ParseValue(string text)
Parameters
Type Name Description
System.String text

User input.
Returns
Type Description
T

Value parsed from user input.
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SelectAllText()

Selects all text.

Declaration
protected virtual void SelectAllText()
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SetValue(Object)

SetValue override to set value to Value property.

Declaration
public sealed override void SetValue(object value)
Parameters
Type Name Description
System.Object value

New value.
Overrides

Events

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ParseError

Occurs when there is an error in parsing user input and allows adding parsing logic.

Declaration
public event EventHandler<UpDownParseErrorEventArgs> ParseError
Event Type
Type Description
System.EventHandler<UpDownParseErrorEventArgs>
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Parsing

Occurs when a value is being parsed and allows custom parsing.

Declaration
public event EventHandler<UpDownParsingEventArgs<T>> Parsing
Event Type
Type Description
System.EventHandler<UpDownParsingEventArgs<T>>
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ValueChanged

Occurs when Value property has changed.

Declaration
public event RoutedPropertyChangedEventHandler<T> ValueChanged
Event Type
Type Description
RoutedPropertyChangedEventHandler<T>
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ValueChanging

Occurs when Value property is changing.

Declaration
public event RoutedPropertyChangingEventHandler<T> ValueChanging
Event Type
Type Description
RoutedPropertyChangingEventHandler<T>

Extension Methods