Cron Expression Generator - Demo Application

This is a demo WinForms application for the CronExpressionControl component.

Features

• Interactive UI: Test all features of the Cron Expression Generator control
• Real-time Updates: See the cron expression and description update as you configure settings
• Copy to Clipboard: Easily copy the generated expression
• Expression Testing: View detailed breakdown of the expression fields
• Reset: Clear the expression back to default values

How to Run

1. Set SGU_Tools_CronExpressionBuilder.Demo as the startup project
2. Press F5 or click Run in Visual Studio
3. The demo application window will open

How to Use

Tabs

Navigate through the six tabs to configure different parts of the cron expression:

1. Seconds: Configure second-level scheduling (0-59)
2. Minutes: Configure minute-level scheduling (0-59)
3. Hours: Configure hour-level scheduling (0-23)
4. Day: Configure day scheduling with advanced options:
   • Day of week or day of month
   • Last day, last weekday, nth occurrence
   • Nearest weekday, days before end of month
5. Month: Configure month scheduling (JAN-DEC)
6. Year: Configure year scheduling

Bottom Display

• Cron Expression: Shows the generated Quartz 7-field cron expression
• Description: Human-readable explanation of when the expression will execute

Toolbar Buttons

• Clear: Resets the expression to default values (0 0 0 ? * * *)
• Copy Expression: Copies the cron expression to the clipboard
• Test Expression: Shows a detailed breakdown of all fields and validation status

Example Usage

Every Day at Midnight

1. Go to Seconds tab ? Select "Every second" (default is "0")
2. Go to Minutes tab ? Select "Every minute" (default is "0")
3. Go to Hours tab ? Select "Every hour" (default is "0")
4. Go to Day tab ? Select "Every day"
5. Result: 0 0 0 ? * * *

Every Weekday at 9 AM

1. Seconds: 0
2. Minutes: 0
3. Hours: Select "Specific hour" ? Check 09
4. Day: Select "Specific day of the week" ? Check Monday-Friday
5. Result: 0 0 9 ? * 2,3,4,5,6 *

First Monday of Every Month at Noon

1. Seconds: 0
2. Minutes: 0
3. Hours: Select "Specific hour" ? Check 12
4. Day: Select "On the" ? Choose "1st" ? "Monday" ? "of the month"
5. Result: 0 0 12 ? * 2#1 *

Testing Scenarios

Use this application to test:

• ? All tab configurations
• ? Expression building accuracy
• ? Description generation
• ? UI responsiveness
• ? Edge cases (last day, nth occurrence, etc.)
• ? Copy/paste functionality
• ? Expression validation

Notes

• The control generates Quartz 7-field cron expressions by default
• The format is: second minute hour dayOfMonth month dayOfWeek year
• Special characters supported: * ? - , / L W #
• Day fields use ? to indicate "no specific value"