LookUpEdit.QueryCheckBoxSelectorMemberIsSelected Event

Allows you to select items based on values in the data source field specified by the CheckBoxSelectorMember property.

Namespace: DevExpress.XtraEditors

Assembly: DevExpress.XtraEditors.v23.1.dll

NuGet Package: DevExpress.Win.Navigation

Declaration

C#

[DXCategory("Events")]
public event EventHandler<PopupCheckBoxSelectorMemberIsSelectedEventArgs> QueryCheckBoxSelectorMemberIsSelected

VB.NET

<DXCategory("Events")>
Public Event QueryCheckBoxSelectorMemberIsSelected As EventHandler(Of PopupCheckBoxSelectorMemberIsSelectedEventArgs)

Event Data

The QueryCheckBoxSelectorMemberIsSelected event's data class is PopupCheckBoxSelectorMemberIsSelectedEventArgs. The following properties provide information specific to this event:

Property	Description
IsSelected	Gets or sets whether to select the item.
Value	Gets the value in the data source.

Remarks

In Multiple Item Selection mode, you can use the CheckBoxSelectorMember property to define the item’s selected state based on the data source object’s property.

Handle the QueryCheckBoxSelectorMemberIsSelected and SetCheckBoxSelectorMemberValue events to convert field values if the specified field is not of the Boolean type:

C#

public partial class Form1 : DevExpress.XtraEditors.XtraForm {
    public Form1() {
        // ...
        lookUpEdit1.Properties.ValueMember = "ID";
        lookUpEdit1.Properties.DisplayMember = "Name";
        lookUpEdit1.Properties.EditValueType = DevExpress.XtraEditors.Repository.LookUpEditValueType.CSVString;
        lookUpEdit1.Properties.CheckBoxSelectorMember = "Manager";
    }
}
// Selects an item if its "Department.Manager" property is equal to the "Manager.FullName" property.
void lookUpEdit1_QueryCheckBoxSelectorMemberIsSelected(object sender, PopupCheckBoxSelectorMemberIsSelectedEventArgs e) {
    e.IsSelected = ((string)e.Value == manager.FullName);
}
// Posts the "Manager.FullName" property value to the "Department.Manager" property based on selection.
void lookUpEdit1_SetCheckBoxSelectorMemberValue(object sender, PopupCheckBoxSelectorMemberValueEventArgs e) {
    if(e.IsSelected)
        e.Value = manager.FullName;
    else e.Value = null;
}

public class Manager {
    public int ID { get; set; }
    public string FullName { get; set; }
    public string Departments { get; set; }
}
public class Department {
    public int ID { get; set; }
    public string Name { get; set; }
    public string Manager { get; set; }
}

VB.NET

Public Partial Class Form1
    Inherits DevExpress.XtraEditors.XtraForm

    Public Sub New()
        lookUpEdit1.Properties.ValueMember = "ID"
        lookUpEdit1.Properties.DisplayMember = "Name"
        lookUpEdit1.Properties.EditValueType = DevExpress.XtraEditors.Repository.LookUpEditValueType.CSVString
        lookUpEdit1.Properties.CheckBoxSelectorMember = "Manager"
    End Sub
End Class
' Selects an item if its "Department.Manager" property is equal to the "Manager.FullName" property.
Private Sub lookUpEdit1_QueryCheckBoxSelectorMemberIsSelected(ByVal sender As Object, ByVal e As PopupCheckBoxSelectorMemberIsSelectedEventArgs)
    e.IsSelected = (CStr(e.Value) = manager.FullName)
End Sub
' Posts the "Manager.FullName" property value to the "Department.Manager" property based on selection.
Private Sub lookUpEdit1_SetCheckBoxSelectorMemberValue(ByVal sender As Object, ByVal e As PopupCheckBoxSelectorMemberValueEventArgs)
    If e.IsSelected Then
        e.Value = manager.FullName
    Else
        e.Value = Nothing
    End If
End Sub

Public Class Manager
    Public Property ID As Integer
    Public Property FullName As String
    Public Property Departments As String
End Class

Public Class Department
    Public Property ID As Integer
    Public Property Name As String
    Public Property Manager As String
End Class