Help handling exceptions

I wrote and tested the WinForms application, and everything works fine on my machine (cliche, I know). When I created the installation project and installed it on the employee machine, it receives the following message:

   ************** Exception Text **************
   System.IndexOutOfRangeException: There is no row at position 0.
   at System.Data.RBTree`1.GetNodeByIndex(Int32 userIndex)
   at System.Data.RBTree`1.get_Item(Int32 index)
   at System.Data.DataRowCollection.get_Item(Int32 index)
   at MyApp.MainForm.MainForm_Load(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(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)

I admit I'm new when it comes to handling exceptions like this. The text does not make much sense to me, and I do not know how best to debug it, since I cannot get an error on my machine.

Can someone tell me what the problem is, or advise me the best way to debug this? Any help is much appreciated!

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4 answers

-, DataRowCollection , DataRowCollection (.. ). , , , .

(F9) MainForm_Load (F10 F11) , , DataRowCollection.

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- node , ...

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You create a collection of data strings and join it with collection[0], without checking if it has at least one element. Perhaps your coleague is connecting to an empty data store that has no rows?

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Source: https://habr.com/ru/post/1724435/


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