ASPxTreeList.FilterExpression Property

Gets or sets the filter criterion which is applied to the tree list.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v23.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue("")]
public string FilterExpression { get; set; }

VB.NET

<DefaultValue("")>
Public Property FilterExpression As String

Property Value

Type	Default	Description
String	String.Empty	A String value that specifies the filter criterion.

Remarks

Online Demo

ASPxTreeList - Filter Control

Examples

The following examples illustrate different scenarios on how to filter the tree list data.

• Filtering data by dates.

  C#

  DateTime date1 = new DateTime(1995, 1, 1);
  DateTime date2 = new DateTime(1995, 7, 1);
  string filter = String.Format("[OrderDate] > #{0}# And [OrderDate] < #{1}#",
                      date1.ToShortDateString(), date2.ToShortDateString());
  ASPxTreeList1.FilterExpression = filter;
  

• Applying a filter that selects orders shipped to Albuquerque (USA). The filter criteria are displayed within the ASPxTreeList’s title.

  C#

  ASPxTreeList1.FilterExpression = "[Country] = 'USA' AND [UnitPrice] > 50";
  ASPxTreeList1.Caption = ASPxTreeList1.FilterExpression;
  

  Result: