UserDesignerOptions.FieldListMaxExpandLevelOnSearch Property

Specifies how many levels of the field list tree are searched when the user enters text into a search box.

Namespace: DevExpress.XtraReports.Configuration

Assembly: DevExpress.XtraReports.v23.2.dll

NuGet Package: DevExpress.Reporting.Core

Declaration

C#

public int FieldListMaxExpandLevelOnSearch { get; set; }

VB.NET

Public Property FieldListMaxExpandLevelOnSearch As Integer

Property Value

Type	Description
Int32	Number of levels to expand the tree node and search.

Property Paths

You can access this nested property as listed below:

Object Type	Path to FieldListMaxExpandLevelOnSearch
ReportingSettings	.UserDesignerOptions .FieldListMaxExpandLevelOnSearch
Settings	.UserDesignerOptions .FieldListMaxExpandLevelOnSearch

Remarks

When a data source contains nested fields, the FieldListMaxExpandLevelOnSearch property allows you to restrict search to the specified number of levels. Initially it is set to 6. You can specify its value as follows:

C#

DevExpress.XtraReports.Configuration.Settings.Default.UserDesignerOptions.FieldListMaxExpandLevelOnSearch = 4;

VB.NET

DevExpress.XtraReports.Configuration.Settings.Default.UserDesignerOptions.FieldListMaxExpandLevelOnSearch = 4

Take the following example of an infinitely nested data source:

C#

using DevExpress.DataAccess.ObjectBinding;
using System.Collections.Generic;
using System.ComponentModel;

[HighlightedClass]
[DisplayName("Recurrent Data Source")]
public class RDataProvider {

    [HighlightedMember]
    [DisplayName("ManagerKey")]
    public IEnumerable<ManagerKey> ManagerKey { get; set; }

    [HighlightedMember]
    [DisplayName("User")]
    public IEnumerable<User> User { get; set; }
}

public class User {
    public string Name { get; set; }
    public string Email { get; set; }
    public IEnumerable<ManagerKey> ManagerKeys {get; set; }
}

public class ManagerKey {
    public string Name { get; set; }
    public string Description { get; set; }
    public string ID { get; set; }
    public User Manager { get; set; }

}

VB.NET

Imports DevExpress.DataAccess.ObjectBinding
Imports System.Collections.Generic
Imports System.ComponentModel

<HighlightedClass, DisplayName("Recurrent Data Source")>
Public Class RDataProvider

  <HighlightedMember, DisplayName("ManagerKey")>
  Public Property ManagerKey() As IEnumerable(Of ManagerKey)

  <HighlightedMember, DisplayName("User")>
  Public Property User() As IEnumerable(Of User)
End Class

Public Class User
  Public Property Name() As String
  Public Property Email() As String
  Public Property ManagerKeys() As IEnumerable(Of ManagerKey)
End Class

Public Class ManagerKey
  Public Property Name() As String
  Public Property Description() As String
  Public Property ID() As String
  Public Property Manager() As User

End Class 

The FieldListMaxExpandLevelOnSearch value prevents the search box from infinite recursion. The following image shows the search-as-you-type feature when FieldListMaxExpandLevelOnSearch is set to 4: