updated the closing logic of the dialog

src/Shared/HandyControlDemo_Shared/ViewModel/Basic/InteractiveDialogViewModel.cs

@@ -6,13 +6,12 @@ using GalaSoft.MvvmLight.Command;
 using GalaSoft.MvvmLight.CommandWpf;       
 #endif
 using HandyControl.Tools.Extension;
-using HandyControlDemo.Data;
 
 namespace HandyControlDemo.ViewModel.Basic
 {
     public class InteractiveDialogViewModel : ViewModelBase, IDialogResultable<string>
     {
-        public Action<string> CloseAction { get; set; }
+        public Action CloseAction { get; set; }
 
         private string _result;
 
@@ -38,6 +37,6 @@ namespace HandyControlDemo.ViewModel.Basic
 #endif
         }
 
-        public RelayCommand CloseCmd => new Lazy<RelayCommand>(() => new RelayCommand(() => CloseAction?.Invoke(MessageToken.MainWindow))).Value;
+        public RelayCommand CloseCmd => new Lazy<RelayCommand>(() => new RelayCommand(() => CloseAction?.Invoke())).Value;
     }
 }

src/Shared/HandyControlDemo_Shared/ViewModel/Controls/DialogDemoViewModel.cs

@@ -9,6 +9,7 @@ using GalaSoft.MvvmLight.CommandWpf;
 #endif
 using HandyControl.Controls;
 using HandyControl.Tools.Extension;
+using HandyControlDemo.Data;
 using HandyControlDemo.UserControl;
 using HandyControlDemo.ViewModel.Basic;
 using HandyControlDemo.Window;
@@ -51,7 +52,7 @@ namespace HandyControlDemo.ViewModel
             }
             else
             {
-                Dialog.Show<TextDialogWithTimer>().GetResultAsync<string>();
+                Dialog.Show<TextDialogWithTimer>(MessageToken.MainWindow).GetResultAsync<string>();
             }
         }
 #else
@@ -68,7 +69,7 @@ namespace HandyControlDemo.ViewModel
             }
             else
             {
-                await Dialog.Show<TextDialogWithTimer>().GetResultAsync<string>();
+                await Dialog.Show<TextDialogWithTimer>(MessageToken.MainWindow).GetResultAsync<string>();
             }
         }
 #endif

src/Shared/HandyControl_Shared/Controls/Other/Dialog.cs

@@ -12,6 +12,8 @@ namespace HandyControl.Controls
 {
     public class Dialog : ContentControl
     {
+        private string _token;
+
         private Adorner _container;
 
         private static readonly Dictionary<string, System.Windows.Window> WindowDic = new Dictionary<string, System.Windows.Window>();
@@ -99,6 +101,7 @@ namespace HandyControl.Controls
         {
             var dialog = new Dialog
             {
+                _token = token,
                 Content = content
             };
 
@@ -139,19 +142,16 @@ namespace HandyControl.Controls
             return dialog;
         }
 
-        public void Close(string token = "")
+        public void Close()
         {
-            if (!string.IsNullOrEmpty(token))
+            if (string.IsNullOrEmpty(_token))
-            {
-                if (WindowDic.TryGetValue(token, out var window))
-                {
-                    Close(window);
-                }
-            }
-            else
             {
                 Close(VisualHelper.GetActiveWindow());
             }
+            else if (WindowDic.TryGetValue(_token, out var window))
+            {
+                Close(window);
+            }
         }
 
         private void Close(System.Windows.Window window)

src/Shared/HandyControl_Shared/Tools/Extension/DialogExtension.cs

@@ -9,7 +9,7 @@ namespace HandyControl.Tools.Extension
     {
         T Result { get; set; }
 
-        Action<string> CloseAction { get; set; }
+        Action CloseAction { get; set; }
     }
 
     public static class DialogExtension