Comprehensive and Detailed In-Depth Explanation:
When a UiPath bot tries to read an Excel file that is open in another application, it encounters an IOException (Input/Output Exception).
Step-by-Step Execution Guide: Handling IOException in UiPath
1️⃣ Try to Read an Open Excel File
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Read Range Workbook: "Employees.xlsx"
2️⃣ If the file is already open, IOException occurs
3️⃣ The "IOException" Catch Block Handles the Error
Real-World Use Case: Ensuring File Availability Before Reading
???? Scenario:
A bot is scheduled to read employee records every morning at 8 AM.
✔ If an employee accidentally leaves the Excel file open, the bot will fail.
✔ To prevent failure, the bot:
Tries to read the file.
If IOException occurs, sends an email alert instead of failing.
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Try
Read Range Workbook: "Employees.xlsx"
Catch ex As IOException
Send Email: "Please close the Employees file!"
???? This makes the automation resilient!
Why the other options are incorrect?
❌ A. None – An exception will occur if the file is open.
❌ C. BusinessRuleException – This is for custom business logic errors, not file access issues.
❌ D. Exception – The IOException block specifically catches this error before reaching the generic Exception block.
✅ Reference:
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