修改了添加设备界面和变量表界面

ViewModels/VariableTableViewModel.cs

@@ -1,3 +1,4 @@
+using System.Collections.ObjectModel;
 using CommunityToolkit.Mvvm.ComponentModel;
 using PMSWPF.Models;
 
@@ -7,7 +8,14 @@ partial class VariableTableViewModel : ViewModelBase
 {
     [ObservableProperty]
     private VariableTable variableTable;
+    [ObservableProperty]
+    private ObservableCollection<DataVariable> _dataVariables;
+
     public override void OnLoaded()
     {
+        if (VariableTable.DataVariables!=null )
+        {
+            _dataVariables = new ObservableCollection<DataVariable>(VariableTable.DataVariables);
+        }
     }
 }