A first chance exception of type 'System.ComponentModel.Win32Exception' occurred in WindowsBase.dll
问题 I have a .NET 4.0 WPF project. When I open a FileDialog, choose some files and press the OK button, then I see in the output window this error: A first chance exception of type 'System.ComponentModel.Win32Exception' occurred in WindowsBase.dll OpenFileDialog fileDialog = new OpenFileDialog(); fileDialog.Multiselect = true; DialogResult result = fileDialog.ShowDialog(); if (result == DialogResult.OK) { Why do I get that Exception before the if-statement? 回答1: It sounds like you're seeing a