сдано

KOP_Labs/KOP_Labs/CustomComboBox.Designer.cs

@@ -38,7 +38,7 @@
             textBox.Size = new Size(263, 27);
             textBox.TabIndex = 0;
             textBox.TextChanged += textBox_TextChanged;
-            textBox.Enter += textBox_Enter;
+            //textBox.Enter += textBox_Enter;
             // 
             // CustomComboBox
             // 

KOP_Labs/KOP_Labs/CustomComboBox.cs

@@ -17,6 +17,7 @@ namespace KOP_Labs
         {
             InitializeComponent();
         }
+
         public int? MinValue { get; set; }
         public int? MaxValue { get; set; }
 
@@ -45,7 +46,7 @@ namespace KOP_Labs
                 }
                 else
                 {
-                    textBox.ForeColor = Color.Black;
+                    textBox.ForeColor = Color.Green;
                 }
             }
 

KOP_Labs/KOP_Labs/CustomTree.cs

@@ -44,8 +44,11 @@ namespace KOP_Labs
 
         public void AddObjectToTree<T>(T obj)
         {
+            if (hierarchy == null)
+            {
+                throw new HierarcyNullException("Иерархия не задана");
+            }
             TreeNode currentNode = treeView.Nodes.Count > 0 ? treeView.Nodes[0] : treeView.Nodes.Add("");
-
             foreach (var property in hierarchy)
             {
                 var value = obj.GetType().GetProperty(property).GetValue(obj, null).ToString();
@@ -63,6 +66,10 @@ namespace KOP_Labs
 
         public T GetSelectedObject<T>() where T : new()
         {
+            if (hierarchy == null)
+            {
+                throw new HierarcyNullException("Иерархия не задана");
+            }
             if (treeView.SelectedNode == null)
             {
                 throw new InvalidOperationException("Узел не выбран");

KOP_Labs/WinFormForTest/Form1.Designer.cs

@@ -42,8 +42,8 @@
             // customComboBox1
             // 
             customComboBox1.Location = new Point(264, 50);
-            customComboBox1.Max = 20;
+            customComboBox1.MaxValue = 20;
-            customComboBox1.Min = 5;
+            customComboBox1.MinValue = 5;
             customComboBox1.Name = "customComboBox1";
             customComboBox1.Size = new Size(301, 125);
             customComboBox1.TabIndex = 0;