Class QueryableGroupDescription

Serves as a base class for group descriptors of QueryableDataProvider. that will be used for column and row grouping.

Inheritance
System.Object
Cloneable
SettingsNode
DescriptionBase
GroupDescriptionBase
GroupDescription
QueryableGroupDescription
QueryablePropertyGroupDescriptionBase
Inherited Members
System.Object.ToString()
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.Pivot.Queryable
Assembly: Telerik.WinControls.PivotGrid.dll

Syntax

public abstract class QueryableGroupDescription : GroupDescription, INotifyPropertyChanged, ISupportInitialize, IObservableServiceProvider, IServiceProvider, IGroupDescription, IDescriptionBase, ISortableGroupDescription, INamed, IEditable, IDescriptionsReferencing, IGrandTotalSupport

Properties

CalculatedItems

Gets the collection of calculated items that are used to initialize a group with a set of subgroups and summarized value.

Declaration
public Collection<CalculatedItem> CalculatedItems { get; }
Property Value
System.Collections.ObjectModel.Collection<CalculatedItem>

NeedsProcessing

Gets a value indicating whether grouped data should be processed before handing it over to the engine.

Declaration
protected virtual bool NeedsProcessing { get; }
Property Value
System.Boolean

true if should process; otherwise, false.

Methods

CloneCore(Cloneable)

Creates a deep copy of this group description by copying core properties including sort order and group comparer. This method ensures that cloned instances maintain their grouping and sorting configuration independently.

Declaration
protected override void CloneCore(Cloneable source)
Parameters
Cloneable source

The source group description to clone from.
Overrides
Remarks

Notes to Inheritors If you derive from Cloneable, you may need to override this method to copy all properties. It is essential that all implementations call the base implementation of this method (if you don't call base you should manually copy all needed properties including base properties).

CreateGroupKeyExpression(IEnumerable<Expression>)

Creates the group key expression.

Declaration
protected abstract Expression CreateGroupKeyExpression(IEnumerable<Expression> valueExpressions)
Parameters
System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression> valueExpressions

Value expressions used for generating group key.
Returns
System.Linq.Expressions.Expression

Expression that creates group key for the given item.

CreateGroupKeyValuesExpressions(ParameterExpression)

Creates value expressions for values that will be used for generating group key expression.

Declaration
protected abstract IEnumerable<Expression> CreateGroupKeyValuesExpressions(ParameterExpression itemExpression)
Parameters
System.Linq.Expressions.ParameterExpression itemExpression

The parameter expression, which will be used for grouping.
Returns
System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression>

Value expressions.

GetAllNames(IEnumerable<Object>, IEnumerable<Object>)

Returns all possible group keys for this instance.

Declaration
protected override IEnumerable<object> GetAllNames(IEnumerable<object> uniqueNames, IEnumerable<object> parentGroupNames)
Parameters
System.Collections.Generic.IEnumerable<System.Object> uniqueNames

Enumeration of all unique group keys that were discovered after grouping.
System.Collections.Generic.IEnumerable<System.Object> parentGroupNames

Enumeration of all parent groups.
Returns
System.Collections.Generic.IEnumerable<System.Object>

Returns all possible group keys for this instance.
Overrides

Extension Methods