Исправления

AccordionBus/AccordionBus/CollectionGenericObjects/AbstractCompany.cs

@@ -29,14 +29,14 @@ namespace AccordionBus.CollectionGenericObjects
             _collection.SetMaxCount = GetMaxCount;
         }
 
-        public static bool operator +(AbstractCompany company, DrawningBus bus)
+        public static int operator +(AbstractCompany company, DrawningBus bus)
         {
-            return company._collection?.Insert(bus) ?? false;
+            return company._collection.Insert(bus);
         }
 
-        public static bool operator -(AbstractCompany company, int position)
+        public static DrawningBus? operator -(AbstractCompany company, int position)
         {
-            return company._collection?.Remove(position) ?? false;
+            return company._collection.Remove(position);
         }
 
         public DrawningBus? GetRandomObject()

AccordionBus/AccordionBus/CollectionGenericObjects/ICollectionGenericObjects.cs

@@ -22,20 +22,20 @@ namespace AccordionBus.CollectionGenericObjects
         /// </summary>
         /// <param name="obj">добавляемый объект</param>
         /// <returns></returns>
-        bool Insert(T obj);
+        int Insert(T obj);
         /// <summary>
         /// вставить по позиции
         /// </summary>
         /// <param name="obj">добавляемый объект</param>
         /// <param name="position">индекс</param>
         /// <returns></returns>
-        bool Insert(T obj, int position);
+        int Insert(T obj, int position);
         /// <summary>
         /// удаление
         /// </summary>
         /// <param name="position">индекс</param>
         /// <returns></returns>
-        bool Remove(int position);
+        T? Remove(int position);
         /// <summary>
         /// получение объекта по позиции
         /// </summary>

AccordionBus/AccordionBus/CollectionGenericObjects/MassiveGenericObjects.cs

@@ -26,27 +26,27 @@ namespace AccordionBus.CollectionGenericObjects
             return _collection[position];
         }
 
-        public bool Insert(T obj)
+        public int Insert(T obj)
         {
             for (int i = 0; i < _collection.Length; i++)
             {
                 if (_collection[i] == null)
                 {
                     _collection[i] = obj;
-                    return true;
+                    return i;
                 }
             }
-            return false;
+            return -1;
         }
 
-        public bool Insert(T obj, int position)
+        public int Insert(T obj, int position)
         {
-            if (position < 0 || position >= _collection.Length) { return false; }
+            if (position < 0 || position >= _collection.Length) { return -1; }
 
             if (_collection[position] == null)
             {
                 _collection[position] = obj;
-                return true;
+                return position;
             }
             else
             {
@@ -55,7 +55,7 @@ namespace AccordionBus.CollectionGenericObjects
                     if (_collection[i] == null)
                     {
                         _collection[i] = obj;
-                        return true;
+                        return i;
                     }
                 }
 
@@ -64,19 +64,20 @@ namespace AccordionBus.CollectionGenericObjects
                     if (_collection[i] == null)
                     {
                         _collection[i] = obj;
-                        return true;
+                        return i;
                     }
                 }
             }
-            return false;
+            return -1;
         }
 
-        public bool Remove(int position)
+        public T? Remove(int position)
         {
-            if (position < 0 || position >= _collection.Length) { return false;}
+            if (position < 0 || position >= _collection.Length) { return null;}
 
+            T? obj = _collection[position];
             _collection[position] = null;
-            return true;
+            return obj;
         }
     }
 }

AccordionBus/AccordionBus/FormBusCollection.cs

@@ -55,7 +55,7 @@ namespace AccordionBus
                     return;
             }
 
-            if (_company + _drawningBus)
+            if (_company + _drawningBus != -1)
             {
                 MessageBox.Show("Объект добавлен");
                 pictureBox.Image = _company.Show();
@@ -89,7 +89,7 @@ namespace AccordionBus
             if (MessageBox.Show("Удалить объект?", "Удаление", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No) return;
 
             int pos = Convert.ToInt32(maskedTextBox.Text);
-            if (_company - pos)
+            if (_company - pos is DrawningBus)
             {
                 MessageBox.Show("Объект удалён");
                 pictureBox.Image = _company.Show();