在大多数情况下,OpenFileDialog不会出现问题,但是在极少数情况下,显示它会导致应用程序不确定地挂起,直到过程结束。
OpenFileDialog的定义如下:
var dialog = new OpenFileDialog
{
ValidateNames = false,
CheckFileExists = false,
CheckPathExists = true,
FileName = "This Folder",
};
if (dialog.ShowDialog() == DialogResult.OK)
{
//logic here
}
类似问题的答案表明,该问题可能与我的应用程序正在使用的DLL有关。
可能成功运行的相关调试输出如下:
无论何时启动程序:
...
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\iertutil.dll'.
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\propsys.dll'.
Exception thrown at 0x74EC3572 in Program Name.exe: Microsoft C++ exception: EEFileLoadException at memory location 0x00B3D034.
Exception thrown at 0x74EC3572 in Program Name.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000.
Exception thrown at 0x74EC3572 in Program Name.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000.
'Program Name.exe' (CLR v4.0.30319: Program Name.exe): Loaded 'Microsoft.GeneratedCode'.
'Program Name.exe' (Win32): Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\Microsoft.V9921e851#\10e86f631668518a182dfda3901d1848\Microsoft.VisualBasic.ni.dll'.
...
第一次在程序运行中显示OpenFileDialog:
...
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sxs.dll'.
mincore\com\oleaut32\dispatch\ups.cpp(2125)\OLEAUT32.dll!77444221: (caller: 77444318) ReturnHr(1) tid(7cb0) 8002801D Library not registered.
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\StructuredQuery.dll'.
...
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp140.dll'.
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\vcruntime140.dll'.
Exception thrown at 0x74EC3572 in Program Name.exe: Microsoft C++ exception: Mso::RegistryException at memory location 0x0B15C968.
Exception thrown at 0x74EC3572 in Program Name.exe: Microsoft C++ exception: [rethrow] at memory location 0x00000000.
'Program Name.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msi.dll'.
...
由于打开OpenFileDialog导致应用程序很少挂起,因此我没有任何调试输出。
当我在其CLI模式下运行该应用程序时,没有上述异常。
我已经尝试研究上述异常消息,但这并没有导致我找到解决方案。
您知道什么可能导致此问题吗?
您对我如何继续调试问题有任何建议吗?
这也发生在我身上。发生这种情况是因为调用openFileDialog的表单是在另一个线程中创建的,但是我仍然不知道为什么会发生这种情况。可能的工作方式是:
var dialog = new OpenFileDialog
{
ValidateNames = false,
CheckFileExists = false,
CheckPathExists = true,
FileName = "This Folder",
};
this.Hide();
if (dialog.ShowDialog() == DialogResult.OK)
{
//logic here
}
this.Show();