关于无窗体模式下，ThreadStateException的解决办法

症状：“在可以调用 OLE 之前，必须将当前线程设置为单线程单元(STA)模式。请确保您的 Main 函数带有 STAThreadAttribute 标记。 只有将调试器附加到该进程才会引发此异常”

 

我在无窗体模式下，使用OpenfileDialog.ShowDialog()时会出现上述问题，google之，都说用以下两种方法：

1、[STAThread]static void Main()

2、Thread app = new Thread(new ParameterizedThreadStart(ShowWindow)); app.ApartmentState = ApartmentState.STA;　//也可以　Thread newThread = new Thread(new ThreadStart(ThreadMethod));　newThread.SetApartmentState(ApartmentState.MTA);

 

但是不行。

 

于是乎，使用英文google之。得解。

 

解决代码如下：

private DialogResult STAShowDialog(FileDialog dialog) { DialogState state = new DialogState(); state.dialog = dialog; System.Threading.Thread t = new System.Threading.Thread(state.ThreadProcShowDialog); t.SetApartmentState(System.Threading.ApartmentState.STA); t.Start(); t.Join(); return state.result; } public class DialogState { public DialogResult result; public FileDialog dialog; public void ThreadProcShowDialog() { result = dialog.ShowDialog(); } } 调用时： OpenFileDialog openFileDlg= new OpenFileDialog(); openFileDlg.InitializeLifetimeService(); openFileDlg.Filter = "Config Files (*.config)|*.config| (*.xml)|*.xml"; openFileDlg.Title = "选择配置文件"; DialogResult ret = STAShowDialog(openFileDlg); if (ret == DialogResult.OK)