Siticone Sunburst Chart

// Commits the DataSource and processes the hierarchy.
// Call this method after setting DataSource, IDMember, ParentIDMember, etc.
public void LoadChart()
{
    siticoneSunburstChart1.DataSource = myDataTable;
    siticoneSunburstChart1.IDMember = "Id";
    siticoneSunburstChart1.ParentIDMember = "ParentId";
    siticoneSunburstChart1.LabelMember = "Name";
    siticoneSunburstChart1.ValueMember = "Amount";
    
                // Triggers the calculation and rendering
    siticoneSunburstChart1.DataBind();
}

// 1. NodeClick Event
// Fires when a specific segment is clicked.
// Provides access to the underlying data item and node level.
chart.NodeClick += (s, e) => 
{
                Console.WriteLine($"Clicked: {e.Label}, Value: {e.Value}");
    
                // Access original data object
                var row = e.DataItem as DataRowView;
};

// 2. NodeHover Event
// Fires continuously as the mouse moves over different segments.
chart.NodeHover += (s, e) => 
{
    lblStatus.Text = $"Hovering: {e.Label}";
};

// 3. NodeDrilledDown Event
// Fires when the user drills down (clicks a child) or drills up (clicks center).
// Useful for updating breadcrumbs or external titles.
chart.NodeDrilledDown += (s, e) => 
{
                Debug.WriteLine($"Current Root Context: {e.Label}");
};

// 4. ThemeChanged Event
// Fires when the Theme property is updated.
chart.ThemeChanged += (s, e) => 
{
                Debug.WriteLine($"New Theme Applied: {e.NewTheme}");
};

// 5. DataLoaded Event
// Fires after DataBind() completes and the hierarchy is built.
// Provides NodeCount and MaxDepth stats.
chart.DataLoaded += (s, e) => 
{
                MessageBox.Show($"Chart loaded with {e.NodeCount} nodes. Depth: {e.MaxDepth}");
};

private void LoadSalesData()
{
                // 1. Create Data Structure
                DataTable dt = new DataTable();
    dt.Columns.Add("ID", typeof(int));
    dt.Columns.Add("ParentID", typeof(int));
    dt.Columns.Add("Category", typeof(string));
    dt.Columns.Add("Sales", typeof(double));

                // 2. Populate Hierarchical Data
                // Root Categories (ParentID is null)
    dt.Rows.Add(1, DBNull.Value, "Electronics", 0);
    dt.Rows.Add(2, DBNull.Value, "Furniture", 0);

                // Sub-Categories (Linked to Parent IDs)
    dt.Rows.Add(3, 1, "Laptops", 5000);
    dt.Rows.Add(4, 1, "Smartphones", 8000);
    dt.Rows.Add(5, 2, "Chairs", 1500);
    dt.Rows.Add(6, 2, "Tables", 2000);

                // 3. Configure Chart Properties
    siticoneSunburstChart1.DataSource = dt;
    siticoneSunburstChart1.IDMember = "ID";
    siticoneSunburstChart1.ParentIDMember = "ParentID";
    siticoneSunburstChart1.LabelMember = "Category";
    siticoneSunburstChart1.ValueMember = "Sales";

                // 4. Apply Visual Styling
    siticoneSunburstChart1.Theme = SunburstThemePreset.Oceanic;
    siticoneSunburstChart1.CenterHoleRatio = 0.3f;
    siticoneSunburstChart1.ShowLabels = true;

                // 5. Bind Data
    siticoneSunburstChart1.DataBind();
}

public class FileNode
{
                public int FileId { get; set; }
                public int? FolderId { get; set; }
                public string Name { get; set; }
                public double SizeKB { get; set; }
}

private void BindFileSystem()
{
                var files = new List<FileNode>
    {
                new FileNode { FileId = 1, FolderId = null, Name = "C: Drive", SizeKB = 0 },
                new FileNode { FileId = 2, FolderId = 1, Name = "Program Files", SizeKB = 0 },
                new FileNode { FileId = 3, FolderId = 1, Name = "Users", SizeKB = 0 },
                new FileNode { FileId = 4, FolderId = 2, Name = "App1", SizeKB = 450 },
                new FileNode { FileId = 5, FolderId = 2, Name = "App2", SizeKB = 900 },
                new FileNode { FileId = 6, FolderId = 3, Name = "Documents", SizeKB = 120 }
    };

    siticoneSunburstChart1.DataSource = files;
    siticoneSunburstChart1.IDMember = "FileId";
    siticoneSunburstChart1.ParentIDMember = "FolderId";
    siticoneSunburstChart1.LabelMember = "Name";
    siticoneSunburstChart1.ValueMember = "SizeKB";
    
                // Enable Drilldown to navigate folders
    siticoneSunburstChart1.EnableDrilldown = true;
    siticoneSunburstChart1.Theme = SunburstThemePreset.Graphite;
    
    siticoneSunburstChart1.DataBind();
}

private void SetupInteractiveChart()
{
                // 1. Define a Custom Palette
    siticoneSunburstChart1.ColorPalette = new List<Color> 
    { 
                Color.FromArgb(52, 152, 219),  // Blue
                Color.FromArgb(46, 204, 113),  // Green
                Color.FromArgb(155, 89, 182),  // Purple
                Color.FromArgb(241, 196, 15)   // Yellow
    };
    
                // 2. Style Tweaks
    siticoneSunburstChart1.LabelForeColor = Color.White;
    siticoneSunburstChart1.NodeBorderColor = Color.FromArgb(40, 40, 40);
    siticoneSunburstChart1.CenterHoleRatio = 0.4f;

                // 3. Wire Up Events
    siticoneSunburstChart1.NodeHover += Chart_NodeHover;
    siticoneSunburstChart1.NodeDrilledDown += Chart_Drill;
}

private void Chart_NodeHover(object sender, SunburstNodeEventArgs e)
{
                // Display details in a label next to the chart
    lblInfo.Text = $"Segment: {e.Label}\nValue: {e.Value:N0}\nLevel: {e.Level}";
}

private void Chart_Drill(object sender, SunburstNodeEventArgs e)
{
                // Update breadcrumb when user clicks to drill down
    lblBreadcrumb.Text = $"Current View: {e.Label}";
}

public enum SunburstThemePreset
{
    Custom,     // Uses the ColorPalette property
    Vibrant,    // Bright, high-contrast colors
    Ocean,      // Blues and Cyans
    Forest,     // Greens and Earth tones
    Sunset,     // Reds, Oranges, Yellows
    Graphite,   // Grayscale
    Pastel,     // Soft, desaturated colors
    Sunrise,    // Warm gradients
    Oceanic,    // Deep sea colors
    Desert,     // Browns and Sands
    Winter,     // Cold blues and whites
    Autumn,     // Fall colors
    Spring,     // Fresh greens
    Summer,     // Hot warm colors
    Volcanic,   // Dark reds and oranges
    Glacial,    // Icy whites and blues
    Royal,      // Purples and Golds
    Neon,       // Bright neon colors
    Metallic,   // Silvers and grays
    Earthy,     // Natural browns
    Sky,        // Light airy blues
    Ruby,       // Gemstone reds
    Emerald     // Gemstone greens
}