String.LastIndexOfAny throwing an odd exception
String.LastIndexOfAny throwing an odd exception
I am
running into an unexpected (on my behalf) exception using
String.LastIndexOfAny(char[], int, int) that I can't seem to figure
out. The following code will replicate this by throwing an
ArgumentOutOfRangeException, "Count [3rd variable] must be positive and count must refer to a location within the string/array/collection.", when I call
test.LastIndexOfAny(anyOf, start, count) even though "count" will pass
if I test for boundaries (0, test.Length) prior to this call:
string test = "chicken nugget";
char[] anyOf = { ' ', 'e' };
int start = 0;
int count = 10;
int lastIndex = test.LastIndexOfAny(anyOf, start, count);
Anyone
have any ideas where I am going wrong using this function I am using
this on a TextBox .Text to find the last index of a list of chars
(anyOf) anywhere prior to the cursor (count) ultimately to recreate
Ctrl-Back functionality so suggestions to recreate that behavior is
also helpful.
String.LastIndexOfAny throwing an odd exception
rr12
"This method begins searching at the startIndex character position of this instance and proceeds backwards towards the beginning until either a character in anyOf is found or count character positions have been examined."
so. . . wouldnt you want:
int lastIndex = test.LastIndexOfAny(anyOf, count-1, count);