diff --git a/BeDesignerSCADA/Controls/MainCanvasPanel.xaml.cs b/BeDesignerSCADA/Controls/MainCanvasPanel.xaml.cs
index 56e1b1ef..9cb8c72c 100644
--- a/BeDesignerSCADA/Controls/MainCanvasPanel.xaml.cs
+++ b/BeDesignerSCADA/Controls/MainCanvasPanel.xaml.cs
@@ -345,7 +345,13 @@ namespace BeDesignerSCADA.Controls
                 {
                     System.Windows.Controls.ComboBox toggle = (System.Windows.Controls.ComboBox)sender;
                     if (toggle.Tag == null) return;
-                    CommunicationModel mode=viewModel.communicationPar?.CommunicationDevices?.ToList().Find(par => par.DeviceName == toggle.Tag.ToString());
+
+                    CommunicationPar communication = null;
+                    if (DataBusModel.GetInstance().KeyValues.ContainsKey(viewModel.VariablePath))
+                    {
+                        communication = DataBusModel.GetInstance().KeyValues[viewModel.VariablePath];
+                    }
+                    CommunicationModel mode= communication?.CommunicationDevices?.ToList().Find(par => par.DeviceName == toggle.Tag.ToString());
                     if (mode != null)
                     {
                         mode?.VarTableModels?.ToList().ForEach(par => { viewModel.DevValueList.Add(par.VarName); });
@@ -391,7 +397,12 @@ namespace BeDesignerSCADA.Controls
         private void namebox_DropDownOpened(object sender, EventArgs e)
         {
             viewModel.DevNameList = new System.Collections.ObjectModel.ObservableCollection<string>();
-            viewModel.communicationPar?.CommunicationDevices?.ToList().ForEach(x => { viewModel.DevNameList.Add(x.DeviceName); });
+            CommunicationPar communication = null;
+            if (DataBusModel.GetInstance().KeyValues.ContainsKey(viewModel.VariablePath))
+            {
+                communication = DataBusModel.GetInstance().KeyValues[viewModel.VariablePath];
+            }
+            communication?.CommunicationDevices?.ToList().ForEach(x => { viewModel.DevNameList.Add(x.DeviceName); });
         }
         #endregion
     }
diff --git a/BeDesignerSCADA/ViewModel/DataBusModel.cs b/BeDesignerSCADA/ViewModel/DataBusModel.cs
index 32cd725a..83a47665 100644
--- a/BeDesignerSCADA/ViewModel/DataBusModel.cs
+++ b/BeDesignerSCADA/ViewModel/DataBusModel.cs
@@ -46,10 +46,6 @@ namespace BeDesignerSCADA.ViewModel
         }
         #endregion
         /// <summary>
-        /// 刷新界面
-        /// </summary>
-        public Action<string> RefreshTheVariableManagerAction;
-        /// <summary>
         /// 刷新界面管理器
         /// </summary>
         /// <param name="path"></param>
@@ -68,7 +64,6 @@ namespace BeDesignerSCADA.ViewModel
                             KeyValues = new ConcurrentDictionary<string, CommunicationPar>();
                         }
                         KeyValues[path] = val;
-                        RefreshTheVariableManagerAction?.Invoke(path);
                         IsSucess = true;
                     }
                 }
diff --git a/BeDesignerSCADA/ViewModel/MainViewModelNew.cs b/BeDesignerSCADA/ViewModel/MainViewModelNew.cs
index 718ae6e1..88163615 100644
--- a/BeDesignerSCADA/ViewModel/MainViewModelNew.cs
+++ b/BeDesignerSCADA/ViewModel/MainViewModelNew.cs
@@ -37,7 +37,7 @@ namespace BeDesignerSCADA.ViewModel
             {
                 IsRunning = !IsRunning;
             });
-            DataBusModel.GetInstance().RefreshTheVariableManagerAction += RefreshTheVariableManagerActionHader;
+            //DataBusModel.GetInstance().RefreshTheVariableManagerAction += RefreshTheVariableManagerActionHader;
         }
 
         #region 变量
@@ -214,13 +214,13 @@ namespace BeDesignerSCADA.ViewModel
         {
             try
             {
-                if (path == VariablePath && !string.IsNullOrEmpty(VariablePath))
-                {
-                    if (DataBusModel.GetInstance().KeyValues.ContainsKey(VariablePath))
-                    {
-                        communicationPar = DataBusModel.GetInstance().KeyValues[VariablePath];
-                    }
-                }
+                //if (path == VariablePath && !string.IsNullOrEmpty(VariablePath))
+                //{
+                //    if (DataBusModel.GetInstance().KeyValues.ContainsKey(VariablePath))
+                //    {
+                //        communicationPar = DataBusModel.GetInstance().KeyValues[VariablePath];
+                //    }
+                //}
             }
             catch (Exception ex)
             {