完成Mqtt服务器添加功能

DMS.WPF/ViewModels/Dialogs/MqttAliasDialogViewModel.cs

@@ -3,7 +3,7 @@ using CommunityToolkit.Mvvm.Input;
 
 namespace DMS.WPF.ViewModels.Dialogs;
 
-public partial class MqttAliasDialogViewModel : ObservableObject
+public partial class MqttAliasDialogViewModel : DialogViewModelBase<string>
 {
     [ObservableProperty]
     private string _title = "设置MQTT别名";
@@ -31,4 +31,16 @@ public partial class MqttAliasDialogViewModel : ObservableObject
     {
         
     }
+
+    [RelayCommand]
+    private void Confirm()
+    {
+        Close(MqttAlias);
+    }
+
+    [RelayCommand]
+    private void Cancel()
+    {
+        Close(null);
+    }
 }