Class SummaryAggregateBase

Class that contains the methods and properties for all the aggregation calculations. It serves as the base for all the aggregators.

Inheritance
System.Object
SummaryAggregateBase
Namespace: Syncfusion.UI.Xaml.Data
Assembly: Syncfusion.Data.WinUI.dll
Syntax
public class SummaryAggregateBase : Object, ISummaryExpressionAggregate, ISummaryAggregate, ISummaryAggregateForGroup

Constructors

SummaryAggregateBase()

Declaration
public SummaryAggregateBase()

Methods

AdjustSummaryCalculation(Object, Object, Object, NotifyCollectionChangedAction, String, Int32)

Adjusts the summary calculation based on the given values.

Declaration
public virtual object AdjustSummaryCalculation(object currentValue, object oldValue, object newValue, NotifyCollectionChangedAction recordaction, string propertyName, int recordCount)
Parameters
Type Name Description
System.Object currentValue

The current summary value.
System.Object oldValue

The old summary value.
System.Object newValue

The new summary value.
System.Collections.Specialized.NotifyCollectionChangedAction recordaction

The collection changed action.
System.String propertyName

The name of the property that is changed.
System.Int32 recordCount

The count of the records in the group.
Returns
Type Description
System.Object

Returns the modified value of the summary calculation based on the given values.

CalculateAggregateExpressionFunc()

Calculates the aggregate expression func for the group.

Declaration
public virtual Action<IEnumerable, string, Expression<Func<string, object, object>>, PropertyInfo> CalculateAggregateExpressionFunc()
Returns
Type Description
System.Action<System.Collections.IEnumerable, System.String, System.Linq.Expressions.Expression<System.Func<System.String, System.Object, System.Object>>, System.Reflection.PropertyInfo>

The aggregate expression func for the group.

CalculateAggregateFunc()

Calculates the custom aggregate for the specified summary column.

Declaration
public virtual Action<IEnumerable, string, PropertyInfo> CalculateAggregateFunc()
Returns
Type Description
System.Action<System.Collections.IEnumerable, System.String, System.Reflection.PropertyInfo>

The custom aggregate for the specified summary column.

CalculateAggregateFuncForGroup()

Calculates the aggregate func for the group.

Declaration
public virtual Action<IEnumerable, string, PropertyInfo> CalculateAggregateFuncForGroup()
Returns
Type Description
System.Action<System.Collections.IEnumerable, System.String, System.Reflection.PropertyInfo>

The aggregate func for the group.

Implements