* UIComboTreeView：更新多选后编辑框的文字显示

SunnyUI.Demo/Controls/FCombobox.Designer.cs

@@ -311,6 +311,7 @@
             this.uiComboTreeView1.Size = new System.Drawing.Size(150, 29);
             this.uiComboTreeView1.TabIndex = 43;
             this.uiComboTreeView1.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;
+            this.uiComboTreeView1.NodeSelected += new Sunny.UI.UIComboTreeView.OnNodeSelected(this.uiComboTreeView1_NodeSelected);
             // 
             // uiLine1
             // 
@@ -350,6 +351,7 @@
             this.uiComboTreeView2.Size = new System.Drawing.Size(150, 29);
             this.uiComboTreeView2.TabIndex = 46;
             this.uiComboTreeView2.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft;
+            this.uiComboTreeView2.NodesSelected += new Sunny.UI.UIComboTreeView.OnNodesSelected(this.uiComboTreeView2_NodesSelected);
             // 
             // uiComboTreeView3
             // 

SunnyUI.Demo/Controls/FCombobox.cs

@@ -32,5 +32,15 @@ namespace Sunny.UI.Demo
             uiComboBox1.Items.Add("102");
             uiComboBox1.Items.Add("103");
         }
+
+        private void uiComboTreeView1_NodeSelected(object sender, System.Windows.Forms.TreeNode node)
+        {
+            ShowInfoTip(node.Text);
+        }
+
+        private void uiComboTreeView2_NodesSelected(object sender, System.Windows.Forms.TreeNodeCollection node)
+        {
+            ShowInfoTip(uiComboTreeView2.Text);
+        }
     }
 }

SunnyUI/Controls/UIComboTreeView.cs

@@ -1,9 +1,12 @@
 using System.ComponentModel;
 using System.Drawing;
+using System.Text;
 using System.Windows.Forms;
 
 namespace Sunny.UI
 {
+    [DefaultEvent("NodeSelected")]
+    [DefaultProperty("Nodes")]
     [ToolboxItem(true)]
     public class UIComboTreeView : UIDropControl
     {
@@ -84,12 +87,35 @@ namespace Sunny.UI
             }
             else
             {
+                StringBuilder sb = new StringBuilder();
+                foreach (TreeNode node in Nodes)
+                {
+                    if (node.Checked) sb.Append(node.Text + "; ");
+                    AddChildNodeText(node, sb);
+                }
+
+                Text = sb.ToString();
                 NodesSelected?.Invoke(this, Nodes);
             }
 
             Invalidate();
         }
 
+        private void AddChildNodeText(TreeNode node, StringBuilder sb)
+        {
+            if (node.Nodes.Count > 0)
+            {
+                foreach (TreeNode child in node.Nodes)
+                {
+                    if (child.Checked)
+                        sb.Append(child.Text + "; ");
+
+                    if (child.Nodes.Count > 0)
+                        AddChildNodeText(child, sb);
+                }
+            }
+        }
+
         private void UIComboTreeView_ButtonClick(object sender, System.EventArgs e)
         {
             ItemForm.Size = ItemSize;

SunnyUI/Controls/UITreeView.cs

@@ -741,7 +741,7 @@ namespace Sunny.UI
                                 {
                                     lineX -= Indent;
 
-                                    if (pNode.Level == 0 && pNode.NextNode != null)
+                                    if (pNode.NextNode != null)
                                         e.Graphics.DrawLine(pn, lineX, lineY, lineX, e.Node.Bounds.Top);
 
                                     if (pNode.NextNode != null)