[mono-vb] System.NullReferenceException: Object reference not set to an instance of an object at System.Windows.Forms.TreeView.MouseMoveHandler when dragging a node in a treeview

Klaus Siebke ksiebke at web.de
Sun May 17 10:23:52 EDT 2009


just a hint: This error mainly comes when any object in that line is not
defined or is having a null/nothing value.
Do you execute any SQL statements where one of the fields is not initialized
Or do you try to fill a null vaule into the treeview?
This may cause the error.


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