Class RadFilterViewElement

The main element of the RadFilterView control. Can be used as an element, hosted into another RadControl.

Inheritance
System.Object
DisposableObject
RadObject
RadElement
VisualElement
RadComponentElement
RadItem
UIItemBase
LightVisualElement
RadFilterViewElement
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Telerik.WinControls.UI
Assembly: Telerik.WinControls.UI.dll

Syntax

public class RadFilterViewElement : LightVisualElement, INotifyPropertyChanged, ICustomTypeDescriptor, ISupportSystemSkin, IComponent, IDisposable, IBindableComponent, ISupportDrag, ISupportDrop, IShortcutProvider, IStylableElement, IStylableNode, IPrimitiveElement, IShapedElement, IFillElement, IBorderElement, IBoxStyle, IBoxElement, IImageElement, ITextPrimitive, ITextProvider, IDataItemSource, IFilterViewCategoriesOwner

Constructors

RadFilterViewElement()

Initializes a new instance of the RadFilterViewElement class.

Declaration
public RadFilterViewElement()

Properties

AssociatedFilterable

Gets or sets the associated filterable. This is a control or a class that implements the IFilterable interface.

Declaration
public IFilterable AssociatedFilterable { get; set; }
Property Value
IFilterable

AutoGenerateCategories

Gets or sets a value indicating whether to auto generate categories when the DataSource property is set.

Declaration
public bool AutoGenerateCategories { get; set; }
Property Value
System.Boolean

A value indicating whether to auto generate categories.

Categories

Gets the categories collection.

Declaration
public RadItemOwnerGenericCollection<BaseFilterViewCategoryElement> Categories { get; }
Property Value
RadItemOwnerGenericCollection<BaseFilterViewCategoryElement>

CategoriesFactory

Gets or sets the factory responsible for creating category elements.

Declaration
public FilterViewCategoriesFactory CategoriesFactory { get; set; }
Property Value
FilterViewCategoriesFactory

ContextMenu

Gets or sets the context menu.

Declaration
public RadContextMenuDropDown ContextMenu { get; set; }
Property Value
RadContextMenuDropDown

DataSource

Gets or sets the data source.

Declaration
public object DataSource { get; set; }
Property Value
System.Object

ElementsPanel

Gets the panel which holds all category elements.

Declaration
public StackLayoutPanel ElementsPanel { get; }
Property Value
StackLayoutPanel

Expression

Gets the filter expression.

Declaration
public string Expression { get; }
Property Value
System.String

FilterDescriptors

Gets the filter descriptors collection.

Declaration
public FilterDescriptorCollection FilterDescriptors { get; }
Property Value
FilterDescriptorCollection

FilteringMode

Gets or sets the filtering mode.

Declaration
public FilteringMode FilteringMode { get; set; }
Property Value
FilteringMode

HorizontalScrollBar

Gets the horizontal scrollbar element.

Declaration
public RadScrollBarElement HorizontalScrollBar { get; }
Property Value
RadScrollBarElement

LoadCategoriesAsync

Declaration
public bool LoadCategoriesAsync { get; set; }
Property Value
System.Boolean

VerticalScrollBar

Gets the vertical scrollbar element.

Declaration
public RadScrollBarElement VerticalScrollBar { get; }
Property Value
RadScrollBarElement

Methods

ApplyFilterDescriptor(FilterDescriptor)

Applies a FilterDescriptor programmatically. Note that each category can apply a filter descriptor only when a specific FilterOperator is used. Here is a list of allowed operators for different categories: Text and CheckedDropDownList - IsEqualTo, IsContainedIn and IsNull. DropDownList - IsEqualTo, IsNull Bool - IsEqualTo, IsNotEqualTo Numeric - IsGreaterThan, IsGreaterThanOrEqualTo, IsLessThan, IsLessThanOrEqualTo or IsEqualTo. DateTime - IsGreaterThan, IsGreaterThanOrEqualTo, IsLessThan, IsLessThanOrEqualTo or IsEqualTo.

Declaration
public virtual bool ApplyFilterDescriptor(FilterDescriptor filterDescriptor)
Parameters
FilterDescriptor filterDescriptor

Returns
System.Boolean

ArrangeOverride(SizeF)

Arranges the RadFilterViewElement to its final location. The element must call the Arrange method of each of its children.

Declaration
protected override SizeF ArrangeOverride(SizeF finalSize)
Parameters
System.Drawing.SizeF finalSize

The size that is available for element.
Returns
System.Drawing.SizeF

The rectangle occupied by the element. Usually finalSize. Should you return different size, the Layout system will restart measuring and rearranging the items. That could lead to infinite recursion.
Overrides
Remarks

In this method call to the Arrange method of each child must be made.

CategoryFilterChanged(IFilterViewCategory)

Called when the filter of a category is changed.

Declaration
public void CategoryFilterChanged(IFilterViewCategory categoryItem)
Parameters
IFilterViewCategory categoryItem

The category with changed filter.
Implements

ClearAllFilters()

Clears all applied filters.

Declaration
public virtual void ClearAllFilters()

CreateBindingContext()

Declaration
protected virtual BindingContext CreateBindingContext()
Returns
System.Windows.Forms.BindingContext

CreateChildElements()

Creates child elements.

Declaration
protected override void CreateChildElements()
Overrides

CreateContextMenu()

Creates context menu.

Declaration
protected virtual RadContextMenuDropDown CreateContextMenu()
Returns
RadContextMenuDropDown

The new RadContextMenuDropDown instance.

CreateHorizontalScrollBarElement()

Creates a horizontal scrollbar.

Declaration
protected virtual RadScrollBarElement CreateHorizontalScrollBarElement()
Returns
RadScrollBarElement

The new RadScrollBarElement instance.

CreateListSource()

Creates the list source.

Declaration
protected virtual RadListSource<FilterViewDataItem> CreateListSource()
Returns
RadListSource<FilterViewDataItem>

CreateStackPanel()

Creates a stack panel, which holds all categories.

Declaration
protected virtual StackLayoutPanel CreateStackPanel()
Returns
StackLayoutPanel

The new StackLayoutPanel instance.

CreateVerticalScrollBarElement()

Creates a vertical scrollbar.

Declaration
protected virtual RadScrollBarElement CreateVerticalScrollBarElement()
Returns
RadScrollBarElement

The new RadScrollBarElement instance.

DisposeManagedResources()

Declaration
protected override void DisposeManagedResources()
Overrides

InitializeCategories()

Initialized the categories.

Declaration
public virtual void InitializeCategories()

InitializeCategoriesAsync()

Initializes the categories asynchronously.

Declaration
public void InitializeCategoriesAsync()

InitializeDropDownMenu()

Initializes the items of the default context menu.

Declaration
protected virtual void InitializeDropDownMenu()

InitializeFields()

Initializes the fields.

Declaration
protected override void InitializeFields()
Overrides

MeasureOverride(SizeF)

Measures the space required by the RadFilterViewElement

Used by the layout system.

Declaration
protected override SizeF MeasureOverride(SizeF availableSize)
Parameters
System.Drawing.SizeF availableSize

The size that is available to the RadFilterViewElement. The available size can be infinity (to take the full size of the element)
Returns
System.Drawing.SizeF

The minimum size required by the element to be completely visible. Cannot be infinity.
Overrides
Remarks

In this method call to the Measure method of each child must be made.

OnCategoryCreated(FilterViewCategoryCreatedEventArgs)

Called when a category element is created. This event is suitable to modify properties of the Category element.

Declaration
protected virtual void OnCategoryCreated(FilterViewCategoryCreatedEventArgs args)
Parameters
FilterViewCategoryCreatedEventArgs args

The event arguments.

OnCategoryCreating(FilterViewCategoryCreatingEventArgs)

Called when a category is about to be created. This event is suitable to modify the values collection(sort/add/remove/reorder) or modify/replace the Category element.

Declaration
protected virtual void OnCategoryCreating(FilterViewCategoryCreatingEventArgs args)
Parameters
FilterViewCategoryCreatingEventArgs args

The event arguments.

OnContextMenuClosed()

Raises the ContextMenuClosed event.

Declaration
protected virtual void OnContextMenuClosed()

OnContextMenuClosing(CancelEventArgs)

Raises the ContextMenuClosing event.

Declaration
protected virtual void OnContextMenuClosing(CancelEventArgs args)
Parameters
System.ComponentModel.CancelEventArgs args

The event arguments.

OnContextMenuItemClick(Object, EventArgs)

Called when an item of the context menu is clicked by the user.

Declaration
protected virtual void OnContextMenuItemClick(object sender, EventArgs e)
Parameters
System.Object sender

The clicked item.
System.EventArgs e

The event arguments.

OnContextMenuOpened()

Raises the ContextMenuOpened event.

Declaration
protected virtual void OnContextMenuOpened()

OnContextMenuOpening(CancelEventArgs)

Raises the ContextMenuOpening event.

Declaration
protected virtual void OnContextMenuOpening(CancelEventArgs args)
Parameters
System.ComponentModel.CancelEventArgs args

The event arguments.

OnFilterChanged(FilterChangedEventArgs)

Called when the filter is changed.

Declaration
protected virtual void OnFilterChanged(FilterChangedEventArgs args)
Parameters
FilterChangedEventArgs args

The event arguments.

OnMouseDown(MouseEventArgs)

Called when a mouse-down event is fired.

Declaration
protected override void OnMouseDown(MouseEventArgs e)
Parameters
System.Windows.Forms.MouseEventArgs e

The event arguments.
Overrides

OnMouseMove(MouseEventArgs)

Called when a mouse-move event is fired.

Declaration
protected override void OnMouseMove(MouseEventArgs e)
Parameters
System.Windows.Forms.MouseEventArgs e

The event arguments.
Overrides

OnMouseUp(MouseEventArgs)

Called when a mouse-up event is fired.

Declaration
protected override void OnMouseUp(MouseEventArgs e)
Parameters
System.Windows.Forms.MouseEventArgs e

The event arguments.
Overrides

OnMouseWheel(MouseEventArgs)

Raises the MouseWheel event.

Declaration
protected override void OnMouseWheel(MouseEventArgs e)
Parameters
System.Windows.Forms.MouseEventArgs e

The event arguments.
Overrides

PrepareCategories()

Identifies and creates the categories elements.

Declaration
protected virtual void PrepareCategories()

ProcessCategoryData()

Processes and populates with data the categories.

Declaration
protected virtual void ProcessCategoryData()

ProcessMouseWheelScroll(MouseEventArgs, RadScrollBarElement)

Called when a mouse wheel event is raised.

Declaration
protected virtual void ProcessMouseWheelScroll(MouseEventArgs e, RadScrollBarElement scrollBar)
Parameters
System.Windows.Forms.MouseEventArgs e

The event arguments.
RadScrollBarElement scrollBar

The scrollbar element.

RemoveFilterDescriptor(FilterDescriptor)

Clears the filter of the category that matches the PropertyName of the given FilterDescriptor.

Declaration
public virtual void RemoveFilterDescriptor(FilterDescriptor filterDescriptor)
Parameters
FilterDescriptor filterDescriptor

SetupCategory(BaseFilterViewCategoryElement, ICollection<Object>)

Fires the CategoryCreating and CategoryCreated events and creates category items.

Declaration
public void SetupCategory(BaseFilterViewCategoryElement category, ICollection<object> values)
Parameters
BaseFilterViewCategoryElement category

The category element.
System.Collections.Generic.ICollection<System.Object> values

The values of the category.

ShouldArrangeChild(RadElement)

Gets a value indicating, whether a child will be arranged during the ArrangeOverride.

Declaration
protected override bool ShouldArrangeChild(RadElement child)
Parameters
RadElement child

The child.
Returns
System.Boolean

Whether the child will be arranged in ArrangeOverride.
Overrides

ShouldMeasureChild(RadElement)

Gets a value indicating, whether a child will be measured during the MeasureOverride.

Declaration
protected override bool ShouldMeasureChild(RadElement child)
Parameters
RadElement child

The child.
Returns
System.Boolean

Whether the child will be measured in MeasureOverride.
Overrides

ShowContextMenu(IFilterViewCategory, Point)

Shows a context menu by given category and location.

Declaration
public virtual void ShowContextMenu(IFilterViewCategory category, Point location)
Parameters
IFilterViewCategory category

The category.
System.Drawing.Point location

The location of context menu.
Implements

UpdateAssociatedFilterable()

Updates the FilterDescriptors collection of the AssociatedFilterable with current filters applied to this element categories.

Declaration
protected virtual void UpdateAssociatedFilterable()

UpdateCategory(IFilterViewCategory)

Declaration
public void UpdateCategory(IFilterViewCategory category)
Parameters
IFilterViewCategory category

Implements

UpdateScrollbars()

Updates the scroll bars visibility and value range.

Declaration
public void UpdateScrollbars()

Events

CategoryCreated

An event that occurs when a category is created and populated with items. This event is suitable to modify properties of the Category element.

Declaration
public event FilterViewCategoryCreatedEventHandler CategoryCreated
Event Type
FilterViewCategoryCreatedEventHandler

CategoryCreating

An event that occurs when a category is created and is about to be populated with items. This event is suitable to modify the values collection(sort/add/remove/reorder) or modify/replace the Category element.

Declaration
public event FilterViewCategoryCreatingEventHandler CategoryCreating
Event Type
FilterViewCategoryCreatingEventHandler

ContextMenuClosed

Occurs when the context menu is closed.

Declaration
public event EventHandler ContextMenuClosed
Event Type
System.EventHandler

ContextMenuClosing

Occurs when the context menu is closing.

Declaration
public event CancelEventHandler ContextMenuClosing
Event Type
System.ComponentModel.CancelEventHandler

ContextMenuItemClick

Occurs when an item in the context menu is clicked.

Declaration
public event HandledEventHandler ContextMenuItemClick
Event Type
System.ComponentModel.HandledEventHandler

ContextMenuOpened

Occurs when the context menu is opened.

Declaration
public event EventHandler ContextMenuOpened
Event Type
System.EventHandler

ContextMenuOpening

Occurs when the context menu is opening.

Declaration
public event CancelEventHandler ContextMenuOpening
Event Type
System.ComponentModel.CancelEventHandler

FilterChanged

An event that occurs when the filter is changed.

Declaration
public event FilterChangedEventHandler FilterChanged
Event Type
FilterChangedEventHandler

Explicit Interface Implementations

IDataItemSource.BindingComplete()

Declaration
void IDataItemSource.BindingComplete()
Implements

IDataItemSource.BindingContext

Declaration
BindingContext IDataItemSource.BindingContext { get; }
Returns
System.Windows.Forms.BindingContext

Implements

IDataItemSource.BindingContextChanged

Declaration
event EventHandler IDataItemSource.BindingContextChanged
Returns
System.EventHandler

Implements

IDataItemSource.Initialize()

Initializes IDataItemSource.

Declaration
void IDataItemSource.Initialize()
Implements

IDataItemSource.MetadataChanged(PropertyDescriptor)

Declaration
void IDataItemSource.MetadataChanged(PropertyDescriptor pd)
Parameters
System.ComponentModel.PropertyDescriptor pd

Implements

IDataItemSource.NewItem()

Create new row item.

Declaration
IDataItem IDataItemSource.NewItem()
Returns
IDataItem

Implements

Extension Methods