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V25.1
  • 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.v25.1.dll

    NuGet Package: DevExpress.Reporting.Core

    Declaration

    public int FieldListMaxExpandLevelOnSearch { get; set; }

    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:

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

    Take the following example of an infinitely nested data source:

    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; }
    
    }
    

    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:

    FieldListMaxExpandLevelOnSearch Equals 4

    See Also