delete holes and return one masssage box

ArmoredVehicle/FormMapWithSetMachine.cs

@@ -127,6 +127,11 @@ namespace ArmoredVehicle
             MainForm form = new();
             if (form.ShowDialog() == DialogResult.OK)
             {
+                if (form.SelectedMachine == null)
+                {
+                    MessageBox.Show("Вы не создали объект");
+                    return;
+                }
                 DrawningObject machine = new(form.SelectedMachine);
                 if (_mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty] + machine != -1)
                 {

ArmoredVehicle/MapWithSetMachineGeneric.cs

@@ -112,7 +112,6 @@
         /// </summary>
         private void Shaking()
         {
-
             int j = _setMachines.Count - 1;
             for (int i = 0; i < _setMachines.Count; i++)
             {
@@ -134,7 +133,6 @@
                     }
                 }
             }
-
         }
         /// <summary>
         /// Метод отрисовки фона
@@ -190,7 +188,6 @@
                     currentHeight++;
                 }
                 if (currentHeight > height) return;
-
             }
 
         }

ArmoredVehicle/SetMachineGeneric.cs

@@ -63,7 +63,6 @@
 		{
 			if (position < _maxCount && position >= 0)
 			{
-
 				if (_places.ElementAt(position) != null)
 				{
 					T result = _places.ElementAt(position);
@@ -72,10 +71,8 @@
 
 					return result;
 				}
-
 				return null;
 			}
-
 			return null;
 		}
 		/// <summary>
@@ -99,9 +96,7 @@
 				if (position < _maxCount && position >= 0)
 				{
 					Insert(this[position], position);
-
 				}
-
 			}
 		}