Bug Report T636902
Visible to All Users

PropertyGridControl - NullReferenceException is thrown on scrolling a control by using the mouse wheel

created 7 years ago

Just upgraded to 2018.1.3 and was clicking around. I'm using the PropertyGrid (VerticalGrid) and can consistently reproduce the following when using the scroll wheel inside a property.

An unhandled exception of type 'System.NullReferenceException' occurred in DevExpress.XtraVerticalGrid.v18.1.dll

Comments (3)

    at Void MouseWheel(DevExpress.Utils.MouseWheelScrollClientArgs) in DevExpress.XtraVerticalGrid.PGEditingState (DevExpress.XtraVerticalGrid.v18.1.dll)
    at Void OnScrollLine(DevExpress.Utils.DXMouseEventArgs, Int32, Boolean) in DevExpress.Utils.MouseWheelScrollHelper (DevExpress.Utils.v18.1.dll)
    at Void OnMouseWheel(System.Windows.Forms.MouseEventArgs) in DevExpress.Utils.MouseWheelScrollHelper (DevExpress.Utils.v18.1.dll)
    at Void WmMouseWheel(System.Windows.Forms.Message ByRef) in System.Windows.Forms.Control (System.Windows.Forms.dll)
    at Void WndProc(System.Windows.Forms.Message ByRef) in System.Windows.Forms.Control (System.Windows.Forms.dll)
    at Void WndProc(System.Windows.Forms.Message ByRef) in DevExpress.XtraEditors.Container.EditorContainer (DevExpress.XtraEditors.v18.1.dll)
    at Void WndProc(System.Windows.Forms.Message ByRef) in DevExpress.XtraVerticalGrid.VGridControlBase (DevExpress.XtraVerticalGrid.v18.1.dll)
    at IntPtr Callback(IntPtr, Int32, IntPtr, IntPtr) in System.Windows.Forms.NativeWindow (System.Windows.Forms.dll)

    DevExpress Support Team 7 years ago

      Hi,

      We have successfully reproduced the behavior you described and passed this ticket to our developers' team for further research. Please bear with us. We will notify you as soon as we make any progress.

        Of course! Thanks for responding so quickly!

        Answers approved by DevExpress Support

        created 7 years ago (modified 7 years ago)

        We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.

        Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.

          Comments (2)
          KM KM
          Kerry Mitchell 7 years ago

            how to download this patch? other tickets are now referring here for this fix but there is no download link?

            DevExpress Support Team 7 years ago

              Hello Doug,

              The hotfix has been withdrawn, since we plan to release the new minor version (18.1.4). It will be available within a week.
              We will notify you by email when the new release is ready for download. Also, you can get all information about updates on our What's New page.

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