| Description |
Returns the index of the first occurence of any of the set of character Values in the current string.
If not found, then -1 is returned.
The scan is case sensitive.
The scan starts at the beginning and continues until either a character is found, or the string is exhausted.
The scan can be forced to commence from the Start character, and can be limited to Count scan characters.
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| | Notes | Very Important : Methods in .Net treat strings as starting at 0, unlike traditional Delphi where they started at 1.
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| Microsoft MSDN Links |
system
system.String
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| A simple example |
program Project1;
{$APPTYPE CONSOLE}
var
strA : String;
strArray : Array[1..3] of Char;
result : Integer;
begin
strA := 'Hello World';
Console.WriteLine('Guide= 1111111111');
Console.WriteLine(' 01234567890123456789');
Console.WriteLine('strA = ' + strA);
strArray[1] := 'h'; // Not in the string
strArray[2] := 'o'; // In positions 4 and 7 of the string
strArray[3] := 'd'; // In position 11 of the string
result := strA.IndexOfAny(strArray);
Console.WriteLine('Looking for h,o,d');
Console.WriteLine('Result = ' + result.ToString);
Console.ReadLine;
end.
| | Show full unit code | Guide= 1111111111
01234567890123456789
strA = Hello World
Looking for h,o,d
Result = 4
| | | Specifying a start position | program Project1;
{$APPTYPE CONSOLE}
var
strA : String;
strArray : Array[1..3] of Char;
result : Integer;
begin
strA := 'Hello World';
Console.WriteLine('Guide= 1111111111');
Console.WriteLine(' 01234567890123456789');
Console.WriteLine('strA = ' + strA);
strArray[1] := 'h'; // Not in the string
strArray[2] := 'o'; // In positions 4 and 7 of the string
strArray[3] := 'd'; // In position 11 of the string
result := strA.IndexOfAny(strArray, 0);
Console.WriteLine('Looking for h,o,d, starting @ 0');
Console.WriteLine('Result = ' + result.ToString);
result := strA.IndexOfAny(strArray, 6);
Console.WriteLine('Looking for h,o,d, starting @ 6');
Console.WriteLine('Result = ' + result.ToString);
result := strA.IndexOfAny(strArray, 8);
Console.WriteLine('Looking for h,o,d, starting @ 8');
Console.WriteLine('Result = ' + result.ToString);
Console.ReadLine;
end.
| | Show full unit code | Guide= 1111111111
01234567890123456789
strA = Hello World
Looking for h,o,d, starting @ 0
Result = 4
Looking for h,o,d, starting @ 6
Result = 7
Looking for h,o,d, starting @ 8
Result = 10
| | | Specifying a start position and limit in the character scan | program Project1;
{$APPTYPE CONSOLE}
var
strA : String;
strArray : Array[1..3] of Char;
result : Integer;
begin
strA := 'Hello World';
Console.WriteLine('Guide= 1111111111');
Console.WriteLine(' 01234567890123456789');
Console.WriteLine('strA = ' + strA);
strArray[1] := 'h'; // Not in the string
strArray[2] := 'o'; // In positions 4 and 7 of the string
strArray[3] := 'd'; // In position 11 of the string
result := strA.IndexOfAny(strArray, 0, 3);
Console.WriteLine('Looking for h,o,d, starting @ 0 for a count of 3');
Console.WriteLine('Result = ' + result.ToString);
result := strA.IndexOfAny(strArray, 6, 3);
Console.WriteLine('Looking for h,o,d, starting @ 6 for a count of 3');
Console.WriteLine('Result = ' + result.ToString);
result := strA.IndexOfAny(strArray, 8, 3);
Console.WriteLine('Looking for h,o,d, starting @ 8 for a count of 3');
Console.WriteLine('Result = ' + result.ToString);
Console.ReadLine;
end.
| | Show full unit code | Guide= 1111111111
01234567890123456789
strA = Hello World
Looking for h,o,d, starting @ 0 for a count of 3
Result = -1
Looking for h,o,d, starting @ 6 for a count of 3
Result = 7
Looking for h,o,d, starting @ 8 for a count of 3
Result = 10
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