检查加载程序集中的 window 是否打开

Question

我有下面的代码，在单击按钮时执行，从另一个 application.exe

打开 window

gAssembly = Assembly.LoadFrom(JLDBConnection.Properties.Settings.Default.DefaultString + @"\JLRetailTerminal.exe");
Type typ = gAssembly.GetExportedTypes().Where(s => s.Name == "RetailWindow").FirstOrDefault();
typ.GetMethod("Show").Invoke(Activator.CreateInstance(typ), null);

gAssembly是一个全局变量。
如何检查 "RetailWindow" 是否已打开并且不打开另一个 window？

Answer 1

你是唯一一个创造者吗？如果是这样，您可以存储 window 实例并检查 IsVisible:

即：

g_wnd = (Window)Activator.CreateInstance(type);

if (!g_wnd.IsVisible)
{
}

Answer 2

完整解决方案。

    var gAssembly = Assembly.LoadFrom(JLDBConnection.Properties.Settings.Default.DefaultString + @"\JLRetailTerminal.exe");
    Type typ = gAssembly.GetExportedTypes().Where(s => s.Name == "RetailWindow").FirstOrDefault();
    //if extend sale is set prevent multiple windows
    if (gWindow == null)
    {//show if window has never been opened
          gWindow = (Window)Activator.CreateInstance(typ);
          gWindow.Show();
    }
    else
    {//window has been opened
          var windows = Application.Current.Windows; //get all opened windows in applications                                        
          if (!windows.OfType<Window>().Contains(gWindow) || !(JLDBConnection.Properties.Settings.Default.ExtendSale == "Yes"))
          {   //if window has been closed   or not multiple sale database                                                                                
                gWindow = (Window)Activator.CreateInstance(typ);
                gWindow.Show();
          }
     }

检查加载程序集中的 window 是否打开

Check if window from loaded assembly is open

.net

c#

windows

wpf

.net-assembly