* UIComboTreeView：增加CanSelectRootNode，单选时是否可选择父节点

SunnyUI.Demo/Controls/FCombobox.Designer.cs

@@ -56,19 +56,19 @@
             treeNode9});
             System.Windows.Forms.TreeNode treeNode11 = new System.Windows.Forms.TreeNode("节点2");
             System.Windows.Forms.TreeNode treeNode12 = new System.Windows.Forms.TreeNode("节点3");
-            System.Windows.Forms.TreeNode treeNode13 = new System.Windows.Forms.TreeNode("节点0");
+            System.Windows.Forms.TreeNode treeNode13 = new System.Windows.Forms.TreeNode("节点00");
-            System.Windows.Forms.TreeNode treeNode14 = new System.Windows.Forms.TreeNode("节点1");
+            System.Windows.Forms.TreeNode treeNode14 = new System.Windows.Forms.TreeNode("节点01");
-            System.Windows.Forms.TreeNode treeNode15 = new System.Windows.Forms.TreeNode("节点2");
+            System.Windows.Forms.TreeNode treeNode15 = new System.Windows.Forms.TreeNode("节点02");
-            System.Windows.Forms.TreeNode treeNode16 = new System.Windows.Forms.TreeNode("节点3");
+            System.Windows.Forms.TreeNode treeNode16 = new System.Windows.Forms.TreeNode("节点03");
             System.Windows.Forms.TreeNode treeNode17 = new System.Windows.Forms.TreeNode("节点0", new System.Windows.Forms.TreeNode[] {
             treeNode13,
             treeNode14,
             treeNode15,
             treeNode16});
-            System.Windows.Forms.TreeNode treeNode18 = new System.Windows.Forms.TreeNode("节点4");
+            System.Windows.Forms.TreeNode treeNode18 = new System.Windows.Forms.TreeNode("节点11");
-            System.Windows.Forms.TreeNode treeNode19 = new System.Windows.Forms.TreeNode("节点5");
+            System.Windows.Forms.TreeNode treeNode19 = new System.Windows.Forms.TreeNode("节点12");
-            System.Windows.Forms.TreeNode treeNode20 = new System.Windows.Forms.TreeNode("节点6");
+            System.Windows.Forms.TreeNode treeNode20 = new System.Windows.Forms.TreeNode("节点13");
-            System.Windows.Forms.TreeNode treeNode21 = new System.Windows.Forms.TreeNode("节点7");
+            System.Windows.Forms.TreeNode treeNode21 = new System.Windows.Forms.TreeNode("节点14");
             System.Windows.Forms.TreeNode treeNode22 = new System.Windows.Forms.TreeNode("节点1", new System.Windows.Forms.TreeNode[] {
             treeNode18,
             treeNode19,
@@ -412,23 +412,23 @@
             this.uiComboTreeView4.MinimumSize = new System.Drawing.Size(63, 0);
             this.uiComboTreeView4.Name = "uiComboTreeView4";
             treeNode13.Name = "节点0";
-            treeNode13.Text = "节点0";
+            treeNode13.Text = "节点00";
             treeNode14.Name = "节点1";
-            treeNode14.Text = "节点1";
+            treeNode14.Text = "节点01";
             treeNode15.Name = "节点2";
-            treeNode15.Text = "节点2";
+            treeNode15.Text = "节点02";
             treeNode16.Name = "节点3";
-            treeNode16.Text = "节点3";
+            treeNode16.Text = "节点03";
             treeNode17.Name = "节点0";
             treeNode17.Text = "节点0";
             treeNode18.Name = "节点4";
-            treeNode18.Text = "节点4";
+            treeNode18.Text = "节点11";
             treeNode19.Name = "节点5";
-            treeNode19.Text = "节点5";
+            treeNode19.Text = "节点12";
             treeNode20.Name = "节点6";
-            treeNode20.Text = "节点6";
+            treeNode20.Text = "节点13";
             treeNode21.Name = "节点7";
-            treeNode21.Text = "节点7";
+            treeNode21.Text = "节点14";
             treeNode22.Name = "节点1";
             treeNode22.Text = "节点1";
             treeNode23.Name = "节点2";

SunnyUI/Controls/DropItem/UIComboTreeViewItem.cs

@@ -22,6 +22,8 @@ namespace Sunny.UI
             }
         }
 
+        public bool CanSelectRootNode { get; set; }
+
         public UIComboTreeViewItem()
         {
             InitializeComponent();
@@ -63,7 +65,7 @@ namespace Sunny.UI
             this.panel.MinimumSize = new System.Drawing.Size(1, 1);
             this.panel.Name = "panel";
             this.panel.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
-            this.panel.RectSides = ((System.Windows.Forms.ToolStripStatusLabelBorderSides)(((System.Windows.Forms.ToolStripStatusLabelBorderSides.Left | System.Windows.Forms.ToolStripStatusLabelBorderSides.Right) 
+            this.panel.RectSides = ((System.Windows.Forms.ToolStripStatusLabelBorderSides)(((System.Windows.Forms.ToolStripStatusLabelBorderSides.Left | System.Windows.Forms.ToolStripStatusLabelBorderSides.Right)
             | System.Windows.Forms.ToolStripStatusLabelBorderSides.Bottom)));
             this.panel.Size = new System.Drawing.Size(250, 44);
             this.panel.TabIndex = 1;
@@ -120,10 +122,13 @@ namespace Sunny.UI
 
         private void TreeView_NodeMouseClick(object sender, System.Windows.Forms.TreeNodeMouseClickEventArgs e)
         {
-            if (!treeView.CheckBoxes && e.Node.Nodes.Count == 0)
+            if (!treeView.CheckBoxes)
             {
-                DoValueChanged(this, e.Node);
+                if (e.Node.Nodes.Count == 0 || CanSelectRootNode)
-                CloseParent();
+                {
+                    DoValueChanged(this, e.Node);
+                    CloseParent();
+                }
             }
         }
 

SunnyUI/Controls/UIComboTreeView.cs

@@ -53,6 +53,9 @@ namespace Sunny.UI
             set => item.CheckBoxes = value;
         }
 
+        [DefaultValue(false), Description("单选时是否可选择父节点"), Category("SunnyUI")]
+        public bool CanSelectRootNode { get; set; }
+
         [DefaultValue(false), Description("是否显示连线"), Category("SunnyUI")]
         public bool ShowLines
         {
@@ -127,6 +130,7 @@ namespace Sunny.UI
         {
             ItemForm.Size = ItemSize;
             item.TreeView.ExpandAll();
+            item.CanSelectRootNode = CanSelectRootNode;
             ItemForm.Show(this);
         }