AggregateOperand.AggregatedExpression Property

Gets or sets the operator that defines how to process objects from a collection that CollectionProperty specifies.

Namespace: DevExpress.Data.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

Declaration

public CriteriaOperator AggregatedExpression { get; set; }

Property Value

Type	Description
CriteriaOperator	The operator that defines how to process objects from a collection that CollectionProperty specifies.

Remarks

This property must specify a path through object relationships (Sum([Income]) or Sum([Cargo.Price])), and does not support nested expressions and complex property paths like Max(Document.<PersonID>LastName).

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the AggregatedExpression property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-make-the-auto-filter-rows-filter-accent-insensitive-e5021/CS/DxSample/Filtering/ClientCriteriaVisitorBase.cs#L38

protected virtual CriteriaOperator VisitAggregate(AggregateOperand theOperand) {
    CriteriaOperator aggregatedExpression = this.AcceptOperator(theOperand.AggregatedExpression);
    CriteriaOperator condition = this.AcceptOperator(theOperand.Condition);

XDL_how-to-delete-all-criteria-corresponding-to-a-particular-field-from-criteriaoperator-e3396/CS/WindowsApplication3/CriteriaHelper.cs#L50

CriteriaOperator condition = theOperand.Condition.Accept(this) as CriteriaOperator;
CriteriaOperator expression = theOperand.AggregatedExpression.Accept(this) as CriteriaOperator;
if(object.ReferenceEquals(condition, null) || object.ReferenceEquals(expression, null) || object.ReferenceEquals(operand, null)) return null;

VB.NET

how-to-make-the-auto-filter-rows-filter-accent-insensitive-e5021/VB/DxSample/Filtering/ClientCriteriaVisitorBase.vb#L44

Protected Overridable Function VisitAggregate(ByVal theOperand As AggregateOperand) As CriteriaOperator
    Dim aggregatedExpression As CriteriaOperator = Me.AcceptOperator(theOperand.AggregatedExpression)
    Dim condition As CriteriaOperator = Me.AcceptOperator(theOperand.Condition)

XDL_how-to-delete-all-criteria-corresponding-to-a-particular-field-from-criteriaoperator-e3396/VB/WindowsApplication3/CriteriaHelper.vb#L61

Dim condition As CriteriaOperator = TryCast(theOperand.Condition.Accept(Me), CriteriaOperator)
Dim expression As CriteriaOperator = TryCast(theOperand.AggregatedExpression.Accept(Me), CriteriaOperator)
If Object.ReferenceEquals(condition, Nothing) OrElse Object.ReferenceEquals(expression, Nothing) OrElse Object.ReferenceEquals(operand, Nothing) Then