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PowerShell IndexOf Method Guide
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- Basic Functionality
- IndexOf() returns first occurrence index of specified value in string or array
- Function searches from left to right, starting from index 0
- Returns -1 if value not found
- Search Options
- Default search is case-sensitive
- Case-insensitive search possible with StringComparison.OrdinalIgnoreCase
- LastIndexOf() returns last occurrence index
- Multiple elements can be searched using loop
- Usage Examples
- Finds character positions in strings
- Works with arrays and custom objects
- Can be combined with Substring() for text manipulation
- Useful for finding usernames in CSV files
- Alternatives
- Contains() method checks array existence without index
- Where-Object cmdlet provides alternative search functionality
- Regular expressions offer more powerful pattern matching
- Common Issues
- Method invocation error occurs with non-string variables
- Index out of bounds error requires array check
- String conversion needed for IndexOf() usage