why argument out of range exception ?

[smith flyers]

string thingword=" testing hmmm";

string firstLetter,res tOfWord;

foreach (string word in thingword.Split ())

{

Console.WriteLi ne(word); // if this only use for output and the rest in
the block is commented, no error !!!

firstLetter = word.Substring( 0,1);

restOfWord = word.Substring( 1, word.Length -1);

Console.WriteLi ne(firstLetter) ;

Console.WriteLi ne(restOfWord);

}





error:::



Unhandled Exception: System.Argument OutOfRangeExcep tion: Index and length
must r
efer to a location within the string.
Parameter name: length
at System.String.S ubstring(Int32 startIndex, Int32 length)
at Class1.jimmy.Ma in(String[] what) in c:\documents and settings\jim\my
docum
ents\visual studio projects\consol eapplication1\c lass1.cs:line 43
Press any key to continue

[Gareth]

Re: why argument out of range exception ?

what if the word = a single character, i.e. word = "A"

That would cause the word.Substring( 1, word.Length - 1); to fail with that
error.


"smith flyers" <flyer@masfd.co m> wrote in message
news:3fafbec8$1 _1@news.tm.net. my...[color=blue]
>
>
> string thingword=" testing hmmm";
>
> string firstLetter,res tOfWord;
>
> foreach (string word in thingword.Split ())
>
> {
>
> Console.WriteLi ne(word); // if this only use for output and the rest in
> the block is commented, no error !!!
>
> firstLetter = word.Substring( 0,1);
>
> restOfWord = word.Substring( 1, word.Length -1);
>
> Console.WriteLi ne(firstLetter) ;
>
> Console.WriteLi ne(restOfWord);
>
> }
>
>
>
>
>
> error:::
>
>
>
> Unhandled Exception: System.Argument OutOfRangeExcep tion: Index and length
> must r
> efer to a location within the string.
> Parameter name: length
> at System.String.S ubstring(Int32 startIndex, Int32 length)
> at Class1.jimmy.Ma in(String[] what) in c:\documents and settings\jim\my
> docum
> ents\visual studio projects\consol eapplication1\c lass1.cs:line 43
> Press any key to continue
>
>
>[/color]

[Brian W]

Re: why argument out of range exception ?

On your first iteration the value of word is ""

This will generate the error when you call Substring


Brian W

"smith flyers" <flyer@masfd.co m> wrote in message
news:3fafbec8$1 _1@news.tm.net. my...[color=blue]
>
>
> string thingword=" testing hmmm";
>
> string firstLetter,res tOfWord;
>
> foreach (string word in thingword.Split ())
>
> {
>
> Console.WriteLi ne(word); // if this only use for output and the rest in
> the block is commented, no error !!!
>
> firstLetter = word.Substring( 0,1);
>
> restOfWord = word.Substring( 1, word.Length -1);
>
> Console.WriteLi ne(firstLetter) ;
>
> Console.WriteLi ne(restOfWord);
>
> }
>
>
>
>
>
> error:::
>
>
>
> Unhandled Exception: System.Argument OutOfRangeExcep tion: Index and length
> must r
> efer to a location within the string.
> Parameter name: length
> at System.String.S ubstring(Int32 startIndex, Int32 length)
> at Class1.jimmy.Ma in(String[] what) in c:\documents and settings\jim\my
> docum
> ents\visual studio projects\consol eapplication1\c lass1.cs:line 43
> Press any key to continue
>
>
>[/color]