Financial OHLC Chart with Trading Signals — WinForms

ProEssentials v10 WinForms .NET 8 — a complete financial charting app built on Pego (the categorical / date-axis graph object): OHLC candlesticks for ten real stock symbols with Bollinger Bands, RSI, a custom stochastic oscillator, and Buy/Sell signal annotations generated from stochastic turning points. Direct2D, four synchronized multi-axes.

---

What This Demonstrates

• OHLC candlesticks via SpecificPlotMode.BoxPlot with real CSV stock data (MSFT, AAPL, AMD, AMZN, CSCO, META, NFLX, QCOM, SBUX, TSLA).
• Technical studies computed in StockPriceLoader.cs: 20-day Bollinger Bands (Upper / SMA / Lower), 10-day RSI, and a custom stochastic oscillator (30-day window, 15-day D-period).
• Buy/Sell signal generation — turning-point detection on the Slow %D with a 7-point lookahead, a −6.0 slope threshold, and a 60 overbought floor. The tuned signals are the kind of feature you could feed to an AI/ML model.
• Four synchronized axes — Price 70%, Volume 10%, RSI 10%, Stochastic 10% — with drag-to-resize dividers.
• Interactive table annotations — a clickable portfolio selector panel plus a live OHLCV readout updated on mouse hover (DrawTable) and arrow-key cursor navigation after clicking a candlestick.
• Date/time axis with serial OADate handling and automatic skipping of non-trading days.
• Code-built UI — the form is constructed entirely in C# (no .Designer.cs, no .resx); the chart fills the window.

---

WinForms vs WPF

This is the WinForms sibling of the WPF Financial OHLC example. The ProEssentials chart configuration is identical between the two — only the host shell differs. Specifics of the port:

• WPF PegoWpf → WinForms Pego; event-handler delegate types adjust accordingly (Pego.DataHotSpotEventHandler, etc.).
• WPF Pego1.Loaded initialization → idiomatic MainForm_Load.
• Cursor.LastMouseMove returns a System.Drawing.Point on WinForms (it was a System.Windows.Point on WPF), so the tooltip handler uses var and drops the (int) casts WPF needed — see the note in Pego1_PeCustomTrackingDataText.
• The single WPF-only line, IsManipulationEnabled (WPF touch pinch/pan opt-in), has no WinForms equivalent on the control and is omitted; mouse-wheel zoom and middle-drag pan are unchanged.
• CSV paths resolve against the executable folder (AppContext.BaseDirectory).

➡️ WPF version: wpf-chart-financial-ohlc-trading-signals-proessentials

---

Data

The ten *.csv files (≈65 KB each) are bundled and copied next to the executable on build. CSV format: Date, Close, Volume, Open, High, Low.

---

Prerequisites

• Visual Studio 2022
• .NET 8 SDK (Windows)
• Internet connection for NuGet restore
• x64

---

How to Run

1. Clone this repository
2. Open FinancialOhlcChart.sln in Visual Studio 2022
3. Build → Rebuild Solution (restores the NuGet package automatically)
4. Press F5
5. Click a symbol in the left panel to switch; hover candlesticks for the live OHLCV readout; click a candle then use arrow keys to step through points

Designer note: This project has no .Designer.cs file by design — the UI is built in code in MainForm.cs. There is nothing for the WinForms designer to open, which avoids the native-control designer issues entirely.

---

NuGet Package

References ProEssentials.Chart.Net80.x64.Winforms from nuget.org. Package restore happens automatically on build.

---

License

Example code is MIT licensed. ProEssentials requires a commercial license for continued use.