A ProEssentials v10 WPF .NET 8 demonstration of a full-featured financial charting application with OHLC candlesticks, technical studies, and custom trading signal annotations across 10 real stock symbols.
This is a self-contained WPF implementation of Example 030 — Table Annotations, Hot Spots from the ProEssentials library, extended into a complete financial charting application.
| Axis | Content | Height |
|---|---|---|
| Price | OHLC candlesticks + Bollinger Bands + SMA 20 | 70% |
| Volume | Volume bars | 10% |
| RSI | Relative Strength Index (10-day) | 10% |
| Stochastic | Custom Fast %K and Slow %D | 10% |
- Bollinger Bands — 20-day SMA with upper and lower bands (±2σ)
- RSI — Relative Strength Index, 10-day smoothed
- Custom Stochastic Oscillator — 30-day window, 15-day D-period with tuned parameters (not a standard textbook stochastic)
The signal generation detects turning points in the Slow %D stochastic using a 7-point lookahead window:
// Sell: steep downward slope from overbought territory
if (fDif < -6.0F && Pego1.PeData.Y[10, pnt] > 60.0F)
// → Sell signal annotation
// Buy: direction reverses upward from downtrend
if (fDif > 0)
// → Buy signal annotationThe tuned parameters — 30-day window, 15-day D-period, 7-point lookahead, -6.0 slope threshold, 60.0 overbought floor — produce signals that could serve as input features to an AI/ML trading or decision support system. This is not an AI system itself — it demonstrates how technical analysis signal generation can be implemented in C# as a data pipeline stage.
Real historical daily OHLCV data included as CSV files:
MSFT AAPL AMD AMZN CSCO META NFLX QCOM SBUX TSLA
Click any symbol in the left panel to switch — data reloads and all studies and signals are recalculated instantly.
- Left panel — clickable stock symbol selector (table annotation hot spots)
- Hover — live OHLCV data shown in the left panel (Date, H, L, O, C, V)
- Tooltip — formatted OHLCV on mouse hover
- Click candlestick — enables arrow-key cursor navigation
- Left-click drag — zoom box
- Mouse wheel — horizontal zoom
- Pinch gesture — zoom (touch screen)
- Right-click — full context menu
- ZoomWindow — overview panel showing current view position
- Y-axis auto-scale — price axis rescales as you pan/zoom
- Drag axis borders — resize individual axis proportions
Table Annotation Hot Spots — table annotation cells become
interactive UI elements. Clicking a symbol triggers a
PeTableAnnotation event that reloads data for the new symbol.
DrawTable(0) — lightweight partial redraw that updates only
the table annotation without redrawing the full chart — used in
MouseMove to update OHLCV data at 60fps without chart flicker.
ConvPixelToGraph() — converts mouse pixel coordinates to
chart data coordinates, used to identify the nearest data point
under the cursor.
Date/time axis — serial date handling with DateTimeMode,
DeltasPerDay, and DeltaX = -1 for daily data.
SpecificPlotMode.BoxPlot — renders the OHLC data as
candlesticks using the High/Low/Open/Close subsets.
PeCustomTrackingDataText — custom tooltip content event
for formatted multi-line OHLCV display.
- Visual Studio 2022
- .NET 8 SDK
- Internet connection for NuGet restore
Designer Support: Visual Studio designer requires the full ProEssentials installation. The project builds and runs correctly via NuGet without a full installation.
1. Clone this repository
2. Open FinancialOhlcChart.sln in Visual Studio 2022
3. Build → Rebuild Solution (restores NuGet package automatically)
4. Press F5
5. Click any stock symbol in the left panel to switch symbols
This project references
ProEssentials.Chart.Net80.x64.Wpf
from nuget.org. Package restore happens automatically on build.
- WPF Quickstart — Simple Scientific Graph
- GigaPrime2D WPF — 100 Million Points
- GigaPrime3D — 3D Surface Height Map
- No-hassle evaluation download
- gigasoft.com
Example code is MIT licensed. ProEssentials requires a commercial license for continued use.