RAD Studio VCL Reference
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Returns the position of a string in the list.
function IndexOf(const S: WideString): Integer;
__fastcall int IndexOf(const BSTR S);
Call IndexOf to obtain the position of the first occurrence of the string S. IndexOf returns the 0-based index of the string. Thus, if S matches the first string in the list, IndexOf returns 0, if S is the second string, IndexOf returns 1, and so on. If the string is not in the string list, IndexOf returns -1.
IndexOf uses a case-sensitive search. To locate a string case-insensitively, use the IndexOfIgnoreCase method instead.
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