DXCollectionView.FilterExpression Property

Gets or sets the DXCollectionView‘s filter expression. This is a bindable property.

Namespace : DevExpress.Maui.CollectionView

Assembly : DevExpress.Maui.CollectionView.dll

NuGet Package : DevExpress.Maui.CollectionView

Declaration

csharp

public CriteriaOperator FilterExpression { get; set; }

Property Value

Type	Description
CriteriaOperator

A criteria operator that specifies a filter expression.

Remarks

When you apply a filter, the view displays a subset of items that meet the specified criteria. You can filter data in the DXCollectionView against single or multiple data fields.

To build filter expressions, use Criteria Operators.

You can also set the FilterString property to specify a filter expression. Note that the FilterExpression and FilterString properties are dependent. If you update one of them, the other changes as well.

Call the CriteriaOperator.Parse method to convert a filter string to its CriteriaOperator equivalent.

Example

The following example filters out persons whose name starts with the letter M:

csharp

using DevExpress.Data.Filtering;
//...
    collectionView.FilterExpression = new FunctionOperator(FunctionOperatorType.StartsWith, new OperandProperty("Name"), new ConstantValue("M"));