整理代码

ShrlAlgoToolkit.RevitAddins/RvCommon/PureModelCmd.cs

@@ -1,4 +1,6 @@
-using Autodesk.Revit.Attributes;
+using System.Windows;
+
+using Autodesk.Revit.Attributes;
 using Autodesk.Revit.DB;
 using eTransmitForRevitDB;
 using Nice3point.Revit.Toolkit.External;
@@ -19,7 +21,11 @@ public class PureModelCmd : ExternalCommand
             System.Windows.MessageBox.Show("请先保存文件");
             return;
         }
-
+        var result = MessageBox.Show("是否清理项目中的所有未使用项", "询问", MessageBoxButton.YesNo, MessageBoxImage.Question);
+        if(result == MessageBoxResult.No)
+        {
+            return;
+        }
         var options = new SaveAsOptions()
         {
             Compact = true,
@@ -34,7 +40,6 @@ public class PureModelCmd : ExternalCommand
         }
         catch (Exception)
         {
-
             throw;
         }