单击任何单元格时,DataGrid会从CurrencyManager中抛出IndexOutOfRangeException

Question

我在Windows窗体上有一个数据网格.

当我最初更新该网格以包含数据,然后单击它时,我得到以下异常.

值得注意的是,异常是在窗体处理窗体的内部,因此在我启动窗体时捕获异常.

请注意,我必须勾选调用堆栈中的"显示外部代码"以显示下面的调用堆栈,否则它只显示[外部代码].

在预感/故障排除步骤方面,并认为这可能是造成由被为其选择的项目,然后这是目前选择的项目解雇的消息,我曾尝试.SelectAll();在DataGridView更新后的数据,这有相同的结果.

例外情况:

IndexOutOfRangeException
{"Index -1 does not have a value."}

调用堆栈:

System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.this[int].get(int index) + 0xa1 bytes 
System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.Current.get() + 0x16 bytes    
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.DataGridViewDataConnection.OnRowEnter(System.Windows.Forms.DataGridViewCellEventArgs e) + 0x101 bytes    
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.OnRowEnter(ref System.Windows.Forms.DataGridViewCell dataGridViewCell = null, int columnIndex = 1, int rowIndex = 0, bool canCreateNewRow, bool validationFailureOccurred) + 0x218 bytes 
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.SetCurrentCellAddressCore(int columnIndex = 1, int rowIndex = 0, bool setAnchorCellAddress, bool validateCurrentCell, bool throughMouseClick = true) + 0x59f bytes   
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.OnCellMouseDown(System.Windows.Forms.DataGridView.HitTestInfo hti, bool isShiftDown, bool isControlDown) + 0x12db bytes  
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.OnCellMouseDown(System.Windows.Forms.DataGridViewCellMouseEventArgs e) + 0x318 bytes 
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.OnMouseDown(System.Windows.Forms.MouseEventArgs e) + 0x153 bytes 
System.Windows.Forms.dll!System.Windows.Forms.Control.WmMouseDown(ref System.Windows.Forms.Message m, System.Windows.Forms.MouseButtons button, int clicks) + 0xcf bytes    
System.Windows.Forms.dll!System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m) + 0x86e bytes 
System.Windows.Forms.dll!System.Windows.Forms.DataGridView.WndProc(ref System.Windows.Forms.Message m) + 0x92 bytes 
System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.OnMessage(ref System.Windows.Forms.Message m) + 0x10 bytes    
System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.WndProc(ref System.Windows.Forms.Message m) + 0x31 bytes  
System.Windows.Forms.dll!System.Windows.Forms.NativeWindow.DebuggableCallback(System.IntPtr hWnd, int msg = 513, System.IntPtr wparam, System.IntPtr lparam) + 0x57 bytes   
[Native to Managed Transition]  
[Managed to Native Transition]  
System.Windows.Forms.dll!System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(int dwComponentID, int reason = 4, int pvLoopData = 0) + 0x24e bytes  
System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(int reason = 4, System.Windows.Forms.ApplicationContext context = {System.Windows.Forms.Application.ModalApplicationContext}) + 0x177 bytes 
System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoop(int reason, System.Windows.Forms.ApplicationContext context) + 0x61 bytes    
System.Windows.Forms.dll!System.Windows.Forms.Application.RunDialog(System.Windows.Forms.Form form) + 0x33 bytes    
System.Windows.Forms.dll!System.Windows.Forms.Form.ShowDialog(System.Windows.Forms.IWin32Window owner) + 0x373 bytes    

Answer 1

最终通过使用泛型BindingList作为数据源而不是通用来解决该问题List.

由于数据源中的值需要根据用户与表单的交互进行更改,因此我们重新填充列表并在每次更改时重新附加它(当它是a时List<>).

INotifyPropertyChanged在对列表中的对象实现之后,我们使用了BindingList<>现在绑定数据并在需要时刷新.

虽然我仍然不知道为什么使用该列表会导致问题,但我很高兴我有一个可行的解决方案.