BuyLog In
Bug Report T512772
Visible to All Users

TreeListEditor - NullReferenceException occurs on the second ListView recreation after changing the corresponding Application Model node

created 8 years ago (modified 8 years ago)

[DevExpress Support Team: CLONED FROM S173664: How to refresh View appearance after making changes to the Application Model in code]

  1. Problem – start ListView “Test Bo 1” and execute 2 times action “SwitchMasterDetailMode” -> NRE should be thrown. This is a small bug, I guess.

UPDATED by Dennis (DevExpress Support):
  at DevExpress.ExpressApp.Win.Controls.ObjectTreeList.UpdateDataSource(Boolean updateContent)
   at DevExpress.XtraTreeList.TreeList.UpdateDataSourceOnChangeDataSource()
   at DevExpress.XtraTreeList.TreeList.set_DataSource(Object value)
   at DevExpress.ExpressApp.Win.Controls.ObjectTreeList.set_DataSource(Object value)
   at DevExpress.ExpressApp.TreeListEditors.Win.TreeListEditor.UpdateControlDataSource()
   at DevExpress.ExpressApp.TreeListEditors.Win.TreeListEditor.treeList_VisibleChanged(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnVisibleChanged(EventArgs e)
   at DevExpress.XtraEditors.Container.EditorContainer.OnVisibleChanged(EventArgs e)
   at DevExpress.XtraTreeList.TreeList.OnVisibleChanged(EventArgs e)
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at DevExpress.XtraEditors.Container.EditorContainer.WndProc(Message& m)
   at DevExpress.XtraTreeList.TreeList.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Sign in to comment on this post

Answers approved by DevExpress Support

created 8 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.

    Sign in to comment on this post

    Disclaimer: The information provided on DevExpress.com and affiliated web properties (including the DevExpress Support Center) is provided "as is" without warranty of any kind. Developer Express Inc disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. Please refer to the DevExpress.com Website Terms of Use for more information in this regard.

    Confidential Information: Developer Express Inc does not wish to receive, will not act to procure, nor will it solicit, confidential or proprietary materials and information from you through the DevExpress Support Center or its web properties. Any and all materials or information divulged during chats, email communications, online discussions, Support Center tickets, or made available to Developer Express Inc in any manner will be deemed NOT to be confidential by Developer Express Inc. Please refer to the DevExpress.com Website Terms of Use for more information in this regard.