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Bug Report T1284711
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NullReferenceException is thrown when a filter is selected from a column filter dropdown

created 8 days ago (modified 8 days ago)

Steps to reproduce:

  1. Create a GridControl with a GridView;
  2. Set the GridColumn.OptionsFilter.FilterPopupMode property to FilterPopupMode.List;
  3. Run the project and the Magnifier application.
  4. Click the column filter icon and select a filter value in the drop-down list.

Expected results:

No exception occurs.

Current results:

After a certain number of item selections from the dropdown, NullReferenceException is thrown.

Additional information:

Call Stack
DevExpress.XtraEditors.v24.2.dll!DevExpress.Accessibility.ComboBoxEditItemsListAccessible.GetChildrenInfo() Line 40    C#
DevExpress.Utils.v24.2.dll!DevExpress.Accessibility.BaseAccessible.HasActualChildren.get()    Unknown
DevExpress.Utils.v24.2.dll!DevExpress.Accessibility.BaseAccessible.GetAccessibleById(int objectId, int childId)    Unknown
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.ComboBoxEdit.GetAccessibilityObjectById(int objectId) Line 717    C#
System.Windows.Forms.dll!System.Windows.Forms.Control.GetAccessibilityObject(int accObjId)    Unknown
System.Windows.Forms.dll!System.Windows.Forms.Control.GetInternalAccessibilityObject(int accObjId)    Unknown
System.Windows.Forms.dll!System.Windows.Forms.Control.WmGetObject(ref System.Windows.Forms.Message m)    Unknown
System.Windows.Forms.dll!System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m)    Unknown
DevExpress.Utils.v24.2.dll!DevExpress.XtraEditors.XtraControl.WndProc(ref System.Windows.Forms.Message m)    Unknown
DevExpress.Utils.v24.2.dll!DevExpress.Utils.Controls.ControlBase.BaseWndProc(ref System.Windows.Forms.Message m)    Unknown
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.BaseControl.WndProc(ref System.Windows.Forms.Message msg) Line 1032    C#
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.BaseEdit.WndProc(ref System.Windows.Forms.Message m)    Unknown
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.TextEdit.BaseEditWndProc(ref System.Windows.Forms.Message msg) Line 4268    C#
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.TextEdit.TextEditWorkingStrategy.WndProc(ref System.Windows.Forms.Message msg) Line 508    C#
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.TextEdit.WndProc(ref System.Windows.Forms.Message msg) Line 4262    C#
DevExpress.XtraEditors.v24.2.dll!DevExpress.XtraEditors.PopupBaseEdit.WndProc(ref System.Windows.Forms.Message msg) Line 1364    C#
DevExpress.XtraGrid.v24.2.dll!DevExpress.XtraGrid.Views.Base.ColumnFilterPopup.FilterComboBox.WndProc(ref System.Windows.Forms.Message msg)    Unknown
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Answers approved by DevExpress Support

created a day ago

We have addressed the issue described in this ticket and will include a fix in our next maintenance update. Should you need to apply our fix prior to official release, you can request a hotfix here.

Important Notes:

  • Hotfixes may be unavailable for Early Access/Beta builds or updates set for release within a week.
  • .NET only: in the NuGet Package Manager, use your personal NuGet feed and check the "Include prerelease" option to view the hotfix package in the "Updates" tab.
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