System.InvalidOperationException:集合已修改;表单关闭时可能不会执行枚举操作

Question

我通过从表单中删除线形来解决此问题。

原始帖子

当我的表格关闭时，我会收到以下错误：

System.InvalidOperationException：集合已修改；枚举操作可能无法执行

只有当程序部署在计算机上而不是在调试期间时，才会出现这种情况。如果我隐藏窗体，它不会只在窗体关闭时出现。

我们非常感谢您的帮助，因为现在这真的很烦人。提前感谢，
Craig

p.s.以下是FormClosed事件

    'Disconnect from database
    cn.Close()
    cn.Dispose()

堆栈跟踪

   ************** Exception Text **************
   System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
   at System.Collections.Generic.List`1.Enumerator.MoveNext()
   at Microsoft.VisualBasic.PowerPacks.ShapeCollection.Dispose(Boolean disposing)
   at Microsoft.VisualBasic.PowerPacks.ShapeContainer.Dispose(Boolean disposing)
   at System.ComponentModel.Component.Dispose()
   at System.Windows.Forms.Control.Dispose(Boolean disposing)
   at System.ComponentModel.Component.Dispose()
   at System.Windows.Forms.Control.Dispose(Boolean disposing)
   at System.Windows.Forms.TabControl.Dispose(Boolean disposing)
   at System.ComponentModel.Component.Dispose()
   at System.Windows.Forms.Control.Dispose(Boolean disposing)
   at System.Windows.Forms.Form.Dispose(Boolean disposing)
   at EquiManager.frmEditJumpingShow.Dispose(Boolean disposing)
   at System.ComponentModel.Component.Dispose()
   at System.Windows.Forms.Form.WmClose(Message& m)
   at System.Windows.Forms.Form.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)

Answer 1

我删除了线条形状，错误消失了。