public class GcCheckedGroupBox : GcGroupBoxControlBase 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using GrapeCity.Win.Containers;

namespace GrapeCity.Win.PlusPak.SampleCodes_CS
{
    public class GcCheckedGroupBoxForm : Form
    {
        private GrapeCity.Win.Containers.GcCheckedGroupBox gcCheckedGroupBox1;
        private System.Windows.Forms.ListBox listBox1;
        private Button button1;
        private ComboBox comboBox1;
        private Label label1;
        private Button button2;
        private Button button3;
        private CheckBox checkBox1;
        private System.ComponentModel.IContainer components = null;

        private void InitializeComponent()
        {
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.button1 = new System.Windows.Forms.Button();
            this.comboBox1 = new System.Windows.Forms.ComboBox();
            this.label1 = new System.Windows.Forms.Label();
            this.button2 = new System.Windows.Forms.Button();
            this.button3 = new System.Windows.Forms.Button();
            this.checkBox1 = new System.Windows.Forms.CheckBox();
            this.gcCheckedGroupBox1 = new GrapeCity.Win.Containers.GcCheckedGroupBox();
            ((System.ComponentModel.ISupportInitialize)(this.gcCheckedGroupBox1)).BeginInit();
            this.SuspendLayout();
            // 
            // listBox1
            // 
            this.listBox1.FormattingEnabled = true;
            this.listBox1.Location = new System.Drawing.Point(12, 158);
            this.listBox1.Name = "listBox1";
            this.listBox1.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
            this.listBox1.Size = new System.Drawing.Size(202, 108);
            this.listBox1.TabIndex = 1;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(236, 40);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(112, 23);
            this.button1.TabIndex = 11;
            this.button1.Text = "Collapse all items";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // comboBox1
            // 
            this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.comboBox1.FormattingEnabled = true;
            this.comboBox1.Items.AddRange(new object[] {
            "All items",
            "Checked items",
            "Checked indices"});
            this.comboBox1.Location = new System.Drawing.Point(12, 131);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(103, 21);
            this.comboBox1.TabIndex = 12;
            this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.ComboBox_SelectedIndexChanged);
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(236, 13);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(62, 13);
            this.label1.TabIndex = 13;
            this.label1.Text = "Commands:";
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(236, 68);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(112, 23);
            this.button2.TabIndex = 14;
            this.button2.Text = "Uncheck all items";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(236, 97);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(109, 23);
            this.button3.TabIndex = 15;
            this.button3.Text = "Disable all items";
            this.button3.UseVisualStyleBackColor = true;
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // checkBox1
            // 
            this.checkBox1.AutoSize = true;
            this.checkBox1.Location = new System.Drawing.Point(12, 9);
            this.checkBox1.Name = "checkBox1";
            this.checkBox1.Size = new System.Drawing.Size(118, 17);
            this.checkBox1.TabIndex = 16;
            this.checkBox1.Text = "Button Appearance";
            this.checkBox1.UseVisualStyleBackColor = true;
            this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
            // 
            // gcCheckedGroupBox1
            // 
            this.gcCheckedGroupBox1.Location = new System.Drawing.Point(12, 32);
            this.gcCheckedGroupBox1.Name = "gcCheckedGroupBox1";
            this.gcCheckedGroupBox1.Size = new System.Drawing.Size(150, 93);
            this.gcCheckedGroupBox1.TabIndex = 0;
            // 
            // GcCheckedGroupBoxForm
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(407, 275);
            this.Controls.Add(this.checkBox1);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.comboBox1);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.listBox1);
            this.Controls.Add(this.gcCheckedGroupBox1);
            this.Name = "GcCheckedGroupBoxForm";
            this.Text = "GcCheckedGroupBox";
            ((System.ComponentModel.ISupportInitialize)(this.gcCheckedGroupBox1)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        public GcCheckedGroupBoxForm()
        {
            InitializeComponent();

            InitializeMyGcCheckedGroupBox();

            this.comboBox1.SelectedIndex = 0;
        }

        private void InitializeMyGcCheckedGroupBox()
        {
            // Set the header text by setting Text property.
            this.gcCheckedGroupBox1.Text = "&Collapse All";

            // Enable gcCheckedGroupBox1 to expand or collapse. 
            this.gcCheckedGroupBox1.HeaderType = HeaderType.ExpanderAndText;

            // Create a top-line border group box.
            this.gcCheckedGroupBox1.GroupStyle = GroupStyle.TopLine;

            // Initialize the layout of items by LayoutSettings.
            this.gcCheckedGroupBox1.LayoutSettings.LayoutMode = LayoutMode.Table;
            this.gcCheckedGroupBox1.LayoutSettings.Orientation = System.Windows.Forms.Orientation.Vertical;
            this.gcCheckedGroupBox1.LayoutSettings.RowCount = 3;
            this.gcCheckedGroupBox1.LayoutSettings.HorizontalAdjustment = GrapeCity.Win.Containers.LineAdjustment.Distributed;
            this.gcCheckedGroupBox1.LayoutSettings.VerticalAdjustment = GrapeCity.Win.Containers.LineAdjustment.Average;

            this.gcCheckedGroupBox1.ItemCheckedChanged +=
                new System.EventHandler<GrapeCity.Win.Containers.CheckBoxItemEventArgs>(this.gcCheckedGroupBox1_ItemCheckedChanged);
            this.gcCheckedGroupBox1.HeaderStateChange +=
                new System.EventHandler<GrapeCity.Win.Containers.HeaderStateChangeEventArgs>(this.gcCheckedGroupBox1_HeaderStateChange);

            // Create and add some items.
            CheckBoxItem[] items = new CheckBoxItem[] 
            {
                new CheckBoxItem("item1"),
                new CheckBoxItem("item2",true),
                new CheckBoxItem("item3"),
                new CheckBoxItem("item4", true),
                new CheckBoxItem("item5", true),
            };
            this.gcCheckedGroupBox1.Items.AddRange(items);
        }

        // Update the items for listBox1 when item checked changed in gcCheckedGroupBox1,
        private void gcCheckedGroupBox1_ItemCheckedChanged(object sender, GrapeCity.Win.Containers.CheckBoxItemEventArgs e)
        {
            if (e.CheckBoxItem.Checked)
            {
                // Set special styles for checked items.
                e.CheckBoxItem.ForeColor = Color.Red;
                e.CheckBoxItem.Font = new Font(e.CheckBoxItem.Font, FontStyle.Bold);
            }
            else
            {
                // Reset these properties will cause the properties to retrieve their values from gcCheckedGroupBox1.
                e.CheckBoxItem.ForeColor = Color.Empty;
                e.CheckBoxItem.Font = null;
            }

            // Update the items displayed in listBox1.
            this.DisplayItems();
        }

        // Display different type of items according to the current comboBox1's SelectedIndex.
        private void DisplayItems()
        {
            if (this.comboBox1.SelectedIndex == 0)
            {
                this.DisplayAllItems();
            }
            else if (this.comboBox1.SelectedIndex == 1)
            {
                this.DisplayAllCheckedItems();
            }
            else if (this.comboBox1.SelectedIndex == 2)
            {
                this.DisplayAllCheckedIndices();
            }
        }

        // Fill listBox1 with all the items in gcCheckedGroupBox1.
        private void DisplayAllItems()
        {
            // Display all the items of gcCheckedGroupBox1 in list box.
            this.listBox1.Items.Clear();
            CheckBoxItemCollection items = this.gcCheckedGroupBox1.Items;
            foreach (CheckBoxItem item in items)
            {
                this.listBox1.Items.Add(
                     item.Text + 
                    " index: " + items.IndexOf(item).ToString() + 
                    " checked state: " + item.Checked);
            }
        }       

        // Fill listBox1 with all the checked items in gcCheckedGroupBox1.
        private void DisplayAllCheckedItems()
        {
            // Display all checked items of gcCheckedGroupBox1 in list box.
            this.listBox1.Items.Clear();
            CheckedCheckBoxItemCollection checkedItems = this.gcCheckedGroupBox1.CheckedItems;
            foreach (CheckBoxItem item in checkedItems)
            {
                this.listBox1.Items.Add(item.Text);
            }
        }

        // Fill listBox1 with all the indices of checked items in gcCheckedGroupBox1.
        private void DisplayAllCheckedIndices()
        {
            // Display all the indices of checked items of gcCheckedGroupBox1 in list box.
            this.listBox1.Items.Clear();
            CheckedCheckBoxIndexCollection checkedIndices = this.gcCheckedGroupBox1.CheckedIndices;
            foreach (int index in checkedIndices)
            {
                this.listBox1.Items.Add(index.ToString());
            }
        }

        // Click button1 will expand or collapse the gcCheckedGroupBox1.
        private void button1_Click(object sender, EventArgs e)
        {
            if (this.gcCheckedGroupBox1.IsExpanded)
            {
                this.gcCheckedGroupBox1.Collapse();
            }
            else
            {
                this.gcCheckedGroupBox1.Expand();
            }
            this.UpdateButton1Text();
        }

        // Click the button2 will check or uncheck all the check box items.
        private void button2_Click(object sender, EventArgs e)
        {
            if (AreAllItemsUnchecked)
            {
                this.gcCheckedGroupBox1.CheckAllItems();
            }
            else
            {
                this.gcCheckedGroupBox1.UncheckAllItems();
            }

            // Update button2's text to appropriate value.
            this.UpdateButton2Text();
        }

        // Click button3 will enable or disable all the check box items.
        private void button3_Click(object sender, EventArgs e)
        {
            if (AreAllItemsDisabled)
            {
                this.gcCheckedGroupBox1.EnableAllItems();
            }
            else
            {
                this.gcCheckedGroupBox1.DisableAllItems();
            }

            // Update button3's text to appropriate value.
            this.UpdateButton3Text();
        }

        // update the header text when gcCheckedGroupBox1's header state changes.
        private void gcCheckedGroupBox1_HeaderStateChange(object sender, HeaderStateChangeEventArgs e)
        {
            if (e.CurrentState == HeaderState.Expanded)
            {
                this.gcCheckedGroupBox1.Text = "&Collapse All";
            }
            else if (e.CurrentState == HeaderState.Collapsed)
            {
                this.gcCheckedGroupBox1.Text = "&Expand All";
            }

            this.UpdateButton1Text();
        }

        // Display the items in listBox1 when comboBox1 selected index is changed.
        private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.DisplayItems();
        }

        // Change the appearance of items by setting ItemSettings.
        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            if (this.checkBox1.Checked)
            {
                this.gcCheckedGroupBox1.ItemSettings.Appearance = Appearance.Button;
            }
            else
            {
                this.gcCheckedGroupBox1.ItemSettings.Appearance = Appearance.Normal;
            }
        }

        // Update the button1's text according to whether gcCheckedGroupBox1 is expanded.
        private void UpdateButton1Text()
        {
            if (this.gcCheckedGroupBox1.IsExpanded)
            {
                this.button1.Text = "&Collapse All";
            }
            else
            {
                this.button1.Text = "&Expand All";
            }
        }

        // Update the button2's text according to whether all the items in gcCheckedGroupBox1 are checked.
        private void UpdateButton2Text()
        {
            if (AreAllItemsUnchecked)
            {
                this.button2.Text = "Check all items";

            }
            else
            {
                this.button2.Text = "Uncheck all items";
            }
        }

        // Update the button3's text according to whether all the items in gcCheckedGroupBox1 are enabled.
        private void UpdateButton3Text()
        {
            if (AreAllItemsDisabled)
            {
                this.button3.Text = "Enable all items";
            }
            else
            {
                this.button3.Text = "Disable all items";
            }
        }

        private bool AreAllItemsUnchecked
        {
            get
            {
                if (this.gcCheckedGroupBox1.HeaderType == HeaderType.CheckerAndText)
                {
                    return this.gcCheckedGroupBox1.HeaderState == HeaderState.Unchecked;
                }
                else
                {
                    return this.gcCheckedGroupBox1.CheckedItems.Count == 0;
                }
            }
        }
        private bool AreAllItemsDisabled
        {
            get
            {
                if (this.gcCheckedGroupBox1.HeaderType == HeaderType.EnablerAndText)
                {
                    return this.gcCheckedGroupBox1.HeaderState == HeaderState.Unchecked;
                }
                else
                {
                    foreach (CheckBoxItem item in this.gcCheckedGroupBox1.Items)
                    {
                        if (item.Enabled)
                            return false;
                    }
                    return true;
                }
            }
        }

        [STAThread]
        public static void Main(string[] args)
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new GcCheckedGroupBoxForm());
        }
    }

}