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  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9.  
  10. namespace WindowsFormsApplication1
  11. {
  12.     public partial class Form1 : Form
  13.     {
  14.         public Form1()
  15.         {
  16.             InitializeComponent();
  17.         }
  18.  
  19.         private void Form1_Load(object sender, EventArgs e)
  20.         {
  21.             CollapsiblePanel cp = new CollapsiblePanel();
  22.             this.Controls.Add(cp);
  23.         }
  24.     }
  25.     //
  26.     public class CollapsiblePanel : SplitContainer
  27.     {
  28.         public Button OpenCloseButton;
  29.         public TextBox TextBox;
  30.         public CollapsiblePanel()
  31.         {
  32.             this.Orientation = Orientation.Horizontal;
  33.             this.IsSplitterFixed = false;
  34.             this.OpenCloseButton = new Button();
  35.             this.OpenCloseButton.Dock = DockStyle.Fill;
  36.             this.OpenCloseButton.Click += new EventHandler(_OpenCloseButton_Click);
  37.             this.Panel1.Controls.Add(OpenCloseButton);
  38.             this.TextBox = new TextBox();
  39.             this.TextBox.Multiline = true;
  40.             this.TextBox.Dock = DockStyle.Fill;
  41.             this.Panel2.Controls.Add(TextBox);
  42.  
  43.         }
  44.  
  45.         void CollapsiblePanel_SizeChanged(object sender, EventArgs e)
  46.         {
  47.         }
  48.  
  49.         void _OpenCloseButton_Click(object sender, EventArgs e)
  50.         {
  51.             this.Panel2Collapsed = !this.Panel2Collapsed;
  52.         }
  53.     }
  54. }
  55.  
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https://ideone.com/RgKVD
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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