Can anyone tell me in C# how to take a substr of a variable and compare it
to a literal ascii number.

ie:

if ( myvar.substr( 1,1 ) == 65 )
{
....
}

thanks,

glenn

One way:

if ( ASC(myvar.substr( 1,1 )) == 65 )
{
...
}

Chris

"glenn" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Can anyone tell me in C# how to take a substr of a variable and compare it
> to a literal ascii number.
>
> ie:
>
> if ( myvar.substr( 1,1 ) == 65 )
> {
> ...
> }
>
> thanks,
>
> glenn
>
>

glenn <(E-Mail Removed)> wrote:
> Can anyone tell me in C# how to take a substr of a variable and compare it
> to a literal ascii number.
>
> ie:
>
> if ( myvar.substr( 1,1 ) == 65 )
> {
> ...
> }

Is substr 1-based? If so:

if (myvar[0]=='A')
or
if (myvar[0]==65)

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Chris, Master of All Things Insignificant <chris@No_Spam_Please.com>
wrote:
> One way:
>
> if ( ASC(myvar.substr( 1,1 )) == 65 )
> {
> ...
> }

Except that isn't C#

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Thanks guys. What about this, will this also work?

Convert.ToChar( myvar.substr( 1, 1) ) == 65

which is the best method? as far as the fastest executing?


thanks,

glenn

"Jon Skeet [C# MVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> glenn <(E-Mail Removed)> wrote:
> > Can anyone tell me in C# how to take a substr of a variable and compare
it
> > to a literal ascii number.
> >
> > ie:
> >
> > if ( myvar.substr( 1,1 ) == 65 )
> > {
> > ...
> > }
>
> Is substr 1-based? If so:
>
> if (myvar[0]=='A')
> or
> if (myvar[0]==65)
>
> --
> Jon Skeet - <(E-Mail Removed)>
> http://www.pobox.com/~skeet
> If replying to the group, please do not mail me too

"glenn" <(E-Mail Removed)> wrote in news:eFo7YrwEFHA.3120
@TK2MSFTNGP12.phx.gbl:
> Thanks guys. What about this, will this also work?
>
> Convert.ToChar( myvar.substr( 1, 1) ) == 65
>
> which is the best method? as far as the fastest executing?

Offhand yes - but its very innefficient. Jon's method is much simpler and
thus faster.



--
Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
"Programming is an art form that fights back"

Make your ASP.NET applications run faster
http://www.atozed.com/IntraWeb/

glenn <(E-Mail Removed)> wrote:
> Thanks guys. What about this, will this also work?
>
> Convert.ToChar( myvar.substr( 1, 1) ) == 65

No, because there is no "substr" method. You can use Substring, but
that seems pretty pointless.

> which is the best method? as far as the fastest executing?

Using the indexer is faster, but more importantly it's clearer. Chances
are it's not going to be the bottleneck anyway.

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

Thanks...

glenn

"Jon Skeet [C# MVP]" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> glenn <(E-Mail Removed)> wrote:
> > Can anyone tell me in C# how to take a substr of a variable and compare
it
> > to a literal ascii number.
> >
> > ie:
> >
> > if ( myvar.substr( 1,1 ) == 65 )
> > {
> > ...
> > }
>
> Is substr 1-based? If so:
>
> if (myvar[0]=='A')
> or
> if (myvar[0]==65)
>
> --
> Jon Skeet - <(E-Mail Removed)>
> http://www.pobox.com/~skeet
> If replying to the group, please do not mail me too