IndexOfString

The IndexOfString function returns the zero-based index of the first occurrence of the search string in the input string. If the Search string is not found, the function returns -1.

Syntax

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int IndexOfString(
  string targetString,
  string searchString,
  bool ignoreCase
);

Parameters

targetString

The string to be searched.

searchString

The string to search for.

ignoreCase

Optional. If set to true, the search will be case-sensitive. If either set to false or not set, the search will be case-insensitive.

Return Values

Returns a zero-based index of the first occurrence of the search string in the input string. If the search string is not found, returns -1. Also, it returns -1 if either targetString or searchString is empty, null or the length of the target string is less than that of the search string.