AggregateOperand Class

The operator that calculates an aggregate expression (MIN, MAX, SUM, etc.).

Namespace: DevExpress.XamarinForms.Core.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

NuGet Package: DevExpress.XamarinForms.Core

Declaration

[Serializable]
public class AggregateOperand :
    CriteriaOperator

Related API Members

The following members return AggregateOperand objects:

Show 11 links

• AggregateOperand.Avg(CriteriaOperator)
• AggregateOperand.Clone()
• AggregateOperand.Count()
• AggregateOperand.Count(CriteriaOperator)
• AggregateOperand.Exists()
• AggregateOperand.Exists(CriteriaOperator)
• AggregateOperand.Max(CriteriaOperator)
• AggregateOperand.Min(CriteriaOperator)
• AggregateOperand.Single(CriteriaOperator)
• AggregateOperand.Sum(CriteriaOperator)
• OperandProperty.Item[CriteriaOperator]

Remarks

You can use the AggregateOperand operand to compose criteria which are based on the collection properties to filter the collection. It represents the results of aggregate operations performed on these types of properties.

Note

• AggregateOperand.AggregatedExpression 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).
• AggregatedExpression may produce null instead of zero for an empty collection on a server side.

Inheritance

Object

CriteriaOperator

AggregateOperand

ContainsOperator