Class DropDownListBase

Represent a base class which is used to create a list control like SfComboBox or SfAutocomplete. These controls are used to selected item(s) from the suggestions displayed in drop down.

Inheritance

System.Object

SfView

SfDropdownEntry

DropDownListBase

SfAutocomplete

SfComboBox

Implements

IDrawableLayout

Microsoft.Maui.Graphics.IDrawable

Microsoft.Maui.IAbsoluteLayout

Microsoft.Maui.ILayout

Microsoft.Maui.IView

Microsoft.Maui.IElement

Microsoft.Maui.ITransform

Microsoft.Maui.IContainer

System.Collections.Generic.IList<Microsoft.Maui.IView>

System.Collections.Generic.ICollection<Microsoft.Maui.IView>

System.Collections.Generic.IEnumerable<Microsoft.Maui.IView>

System.Collections.IEnumerable

Microsoft.Maui.ISafeAreaView

Microsoft.Maui.IPadding

Microsoft.Maui.IVisualTreeElement

Inherited Members

SfDropdownEntry.IsDropDownOpenProperty

SfDropdownEntry.PlaceholderProperty

SfDropdownEntry.PlaceholderColorProperty

SfDropdownEntry.ClearButtonIconColorProperty

SfDropdownEntry.StrokeProperty

SfDropdownEntry.IsClearButtonVisibleProperty

SfDropdownEntry.MaxDropDownHeightProperty

SfDropdownEntry.FontSizeProperty

SfDropdownEntry.FontFamilyProperty

SfDropdownEntry.FontAttributesProperty

SfDropdownEntry.TextColorProperty

SfDropdownEntry.OnFontChanged(Font, Font)

SfDropdownEntry.Focus()

SfDropdownEntry.Unfocus()

SfDropdownEntry.ArrangeContent(Rect)

SfDropdownEntry.MeasureContent(Double, Double)

SfDropdownEntry.OnDraw(ICanvas, RectF)

SfDropdownEntry.OnDropdownOpening()

SfDropdownEntry.IsClearButtonVisible

SfDropdownEntry.Placeholder

SfDropdownEntry.PlaceholderColor

SfDropdownEntry.ClearButtonIconColor

SfDropdownEntry.MaxDropDownHeight

SfDropdownEntry.IsDropDownOpen

SfDropdownEntry.Stroke

SfDropdownEntry.FontSize

SfDropdownEntry.FontAttributes

SfDropdownEntry.FontFamily

SfDropdownEntry.TextColor

SfView.OnBindingContextChanged()

SfView.MeasureOverride(Double, Double)

SfView.ArrangeOverride(Rect)

SfView.OnMeasure(Double, Double)

SfView.IDrawableLayout.InvalidateDrawable()

SfView.Children

SfView.ClipToBounds

SfView.Padding

SfView.IDrawableLayout.DrawingOrder

Namespace: Syncfusion.Maui.Inputs.DropDownControls

Assembly: Syncfusion.Maui.Inputs.dll

Syntax

public abstract class DropDownListBase : SfDropdownEntry, IDrawableLayout, IDrawable, IAbsoluteLayout, ILayout, IView, IElement, ITransform, IContainer, IList<IView>, ICollection<IView>, IEnumerable<IView>, IEnumerable, ISafeAreaView, IPadding, IVisualTreeElement, ITouchListener, ITextElement, IKeyboardListener

Constructors

DropDownListBase()

Initializes a new instance of the DropDownListBase class.

Declaration

public DropDownListBase()

Fields

DisplayMemberPathProperty

Identifies DisplayMemberPath bindable property.

Declaration

public static readonly BindableProperty DisplayMemberPathProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the DisplayMemberPath bindable property.

ItemsSourceProperty

Identifies ItemsSource bindable property.

Declaration

public static readonly BindableProperty ItemsSourceProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the ItemsSource bindable property.

ItemTemplateProperty

Identifies ItemTemplate bindable property.

Declaration

public static readonly BindableProperty ItemTemplateProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the ItemTemplate bindable property.

SelectedItemProperty

Identifies SelectedItem bindable property.

Declaration

public static readonly BindableProperty SelectedItemProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the SelectedItem bindable property.

SelectedValuePathProperty

Identifies SelectedValuePath bindable property.

Declaration

public static readonly BindableProperty SelectedValuePathProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the SelectedValuePath bindable property.

SelectedValueProperty

Identifies SelectedValue bindable property.

Declaration

public static readonly BindableProperty SelectedValueProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the SelectedValue bindable property.

TextMemberPathProperty

Identifies TextMemberPath bindable property.

Declaration

public static readonly BindableProperty TextMemberPathProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the TextMemberPath bindable property.

TextProperty

Identifies Text bindable property.

Declaration

public static readonly BindableProperty TextProperty

Field Value

Type	Description
Microsoft.Maui.Controls.BindableProperty	The identifier for the Text bindable property.

Properties

DisplayMemberPath

Gets or sets the name or path of the property that is displayed for each data item in the drop down.

Declaration

public string DisplayMemberPath { get; set; }

Property Value

Type	Description
System.String	The default value is string.Empty.

Remarks

In non-editable mode, search will be performed using DisplayMemberPath when the popup is opened. If TextMemberPath is null or string.Empty, then searching and displaying the selected value in selection box area will be based on DisplayMemberPath. If both TextMemberPath and DisplayMemberPath properties are null or string.Empty, then searching and displaying the selected value will be based on value received from object.ToString.

ItemsSource

Gets or sets an object source used to generate the content of the control.

Declaration

public object ItemsSource { get; set; }

Property Value

Type	Description
System.Object	The default value is null.

ItemTemplate

Gets or sets the data template for dropdown item in dropdown view.

Declaration

public DataTemplate ItemTemplate { get; set; }

Property Value

Type	Description
Microsoft.Maui.Controls.DataTemplate	The default value is null.

SelectedItem

Gets or sets the selected item.

Declaration

public object SelectedItem { get; set; }

Property Value

Type	Description
System.Object	The default value is null.

Remarks

Editor will show PlaceHolderText when no item is selected.

SelectedValue

Gets the value of the SelectedItem obtained using SelectedValuePath.

Declaration

public object SelectedValue { get; }

Property Value

Type	Description
System.Object	The default value is null.

Remarks

The value of the selected item.

SelectedValuePath

Gets or sets the property path that is used to get the SelectedValue property of the SelectedItem property.

Declaration

public string SelectedValuePath { get; set; }

Property Value

Type	Description
System.String	The default value is string.Empty.

Remarks

If SelectedValuePath is null, SelectedValue will be received from object.ToString.

Text

Gets the text that is used to display in the text box portion of the control.

Declaration

public string Text { get; }

Property Value

Type	Description
System.String	The default value is string.Empty.

Remarks

This property does not have effect in non-editable mode.

TextMemberPath

Gets or sets the property path that is used to display the selected value in the text box portion or non-editable display area.

Declaration

public string TextMemberPath { get; set; }

Property Value

Type	Description
System.String	The default value is string.Empty.

Remarks

In editable mode, search will be performed using TextMemberPath. In non-editable mode, search will be performed using TextMemberPath when the popup is not opened. In non-editable mode, search will be performed using DisplayMemberPath when the popup is opened. If TextMemberPath is null or string.Empty, then searching and displaying the selected value in selection box area will be based on DisplayMemberPath. If both TextMemberPath and DisplayMemberPath properties are null or string.Empty, then searching and displaying the selected value will be based on value received from object.ToString.

Methods

OnHandlerChanged()

Handler changed method.

Declaration

protected override void OnHandlerChanged()

Overrides

SfDropdownEntry.OnHandlerChanged()

OnPropertyChanged(String)

PropertyChanged method.

Declaration

protected override void OnPropertyChanged(string propertyName = null)

Parameters

Type	Name	Description
System.String	propertyName

Events

Completed

The completed event gets raised when pressing enter key or return key after the text is entered in the input field. It is applicable only for editable modes.

Declaration

public event EventHandler Completed

Event Type

Type	Description
System.EventHandler

SelectionChanged

Occurs when the current selection is changed.

Declaration

public event EventHandler<SelectionChangedEventArgs> SelectionChanged

Event Type

Type	Description
System.EventHandler<SelectionChangedEventArgs>

Implements

IDrawableLayout

Microsoft.Maui.Graphics.IDrawable

Microsoft.Maui.IAbsoluteLayout

Microsoft.Maui.ILayout

Microsoft.Maui.IView

Microsoft.Maui.IElement

Microsoft.Maui.ITransform

Microsoft.Maui.IContainer

System.Collections.Generic.IList<>

System.Collections.Generic.ICollection<>

System.Collections.Generic.IEnumerable<>

System.Collections.IEnumerable

Microsoft.Maui.ISafeAreaView

Microsoft.Maui.IPadding

Microsoft.Maui.IVisualTreeElement