Returns the position of the first occurrence in the specified string of the given search string.
The lowest-index position of value in source if it is found, or -1 if source does not contain value.
If value is an empty string, the return value will always be 0
.
This function performs a case-sensitive word search using the invariant culture.
string::index-of('testing string', 'test') ==> 0
string::index-of('testing string', '') ==> 0
string::index-of('testing string', 'Test') ==> -1
string::index-of('testing string', 'ing') ==> 4
StringFunctions Class | NAnt.Core.Functions Namespace