using Syncfusion.Windows.Forms.Tools;

public class MyForm : Form
{
    private GroupView groupView1;
    private ImageList imageList1;
    
    public MyForm()
    {
        InitializeComponent();
        
        // Create GroupView
        this.groupView1 = new GroupView();
        this.groupView1.Location = new Point(10, 10);
        this.groupView1.Size = new Size(200, 300);
        this.groupView1.FlatLook = true;
        
        // Setup ImageList
        this.imageList1 = new ImageList();
        this.imageList1.Images.Add(Image.FromFile("icon1.png"));
        this.imageList1.Images.Add(Image.FromFile("icon2.png"));
        this.imageList1.Images.Add(Image.FromFile("icon3.png"));
        
        // Assign ImageList
        this.groupView1.SmallImageList = this.imageList1;
        this.groupView1.SmallImageView = true;
        
        // Add items
        this.groupView1.GroupViewItems.AddRange(new GroupViewItem[] {
            new GroupViewItem("My Computer", 0, true, null, "Item0"),
            new GroupViewItem("Network", 1, true, null, "Item1"),
            new GroupViewItem("Recycle Bin", 2, true, null, "Item2")
        });
        
        // Handle selection event
        this.groupView1.GroupViewItemSelected += GroupView1_ItemSelected;
        
        // Add to form
        this.Controls.Add(this.groupView1);
    }
    
    private void GroupView1_ItemSelected(object sender, EventArgs e)
    {
        int selectedIndex = this.groupView1.SelectedItem;
        string selectedText = this.groupView1.GroupViewItems[selectedIndex].Text;
        MessageBox.Show($"Selected: {selectedText}");
    }
}

// Create toolbox-style GroupView
this.groupView1.FlatLook = true;
this.groupView1.FlowView = true;
this.groupView1.ShowFlowViewItemText = true;
this.groupView1.IntegratedScrolling = true;
this.groupView1.SmallImageView = true;
this.groupView1.AllowDragDrop = true;

// Configure highlighting
this.groupView1.HighlightText = true;
this.groupView1.HighlightImage = true;
this.groupView1.HighlightItemColor = Color.LightBlue;
this.groupView1.HighlightTextColor = Color.DarkBlue;

// Add single item
GroupViewItem newItem = new GroupViewItem(
    text: "New Item",
    imageIndex: 3,
    visible: true,
    toolTipText: null,
    name: "NewItem1"
);
this.groupView1.GroupViewItems.Add(newItem);

// Add multiple items
this.groupView1.GroupViewItems.AddRange(new GroupViewItem[] {
    new GroupViewItem("Item 1", 0, true, null, "Item1"),
    new GroupViewItem("Item 2", 1, true, null, "Item2"),
    new GroupViewItem("Item 3", 2, true, null, "Item3")
});

// Enable highlighting
this.groupView1.HighlightText = true;
this.groupView1.HighlightImage = true;

// Set highlight colors
this.groupView1.HighlightItemColor = Color.LightGray;
this.groupView1.HighlightTextColor = Color.Black;

// Set selection colors
this.groupView1.SelectedItemColor = Color.Navy;
this.groupView1.SelectedTextColor = Color.White;
this.groupView1.SelectedHighlightItemColor = Color.Blue;
this.groupView1.SelectedHighlightTextColor = Color.Yellow;

// Enable drag-and-drop
this.groupView1.AllowDragDrop = true;
this.groupView1.AllowDragAnyObject = true;

// Handle reorder event
this.groupView1.GroupViewItemsReordered += (sender, e) => {
    // Items have been reordered
    UpdateItemPositions();
};

// Enable in-place renaming for specific item
int itemIndexToRename = 2;
this.groupView1.InplaceRenameItem(itemIndexToRename);

// Handle rename event
this.groupView1.GroupViewItemRenamed += (sender, e) => {
    GroupItemRenamedEventArgs args = (GroupItemRenamedEventArgs)e;
    MessageBox.Show($"Renamed from '{args.OldLabel}' to '{args.NewLabel}'");
};

// Handle ShowContextMenu event
this.groupView1.ShowContextMenu += GroupView1_ShowContextMenu;

private void GroupView1_ShowContextMenu(object sender, EventArgs e)
{
    ContextMenuStrip menu = new ContextMenuStrip();
    
    // Add menu items
    menu.Items.Add("Add New Item", null, AddNewItem_Click);
    menu.Items.Add("Remove Item", null, RemoveItem_Click);
    menu.Items.Add(new ToolStripSeparator());
    menu.Items.Add("Properties", null, Properties_Click);
    
    // Check if mouse is over an item
    if (this.groupView1.ContextMenuItem != -1)
    {
        menu.Items[1].Enabled = true; // Enable Remove
    }
    else
    {
        menu.Items[1].Enabled = false; // Disable Remove
    }
    
    // Show context menu
    menu.Show(this.groupView1, this.groupView1.PointToClient(Cursor.Position));
}