simple math

[=?Utf-8?B?cm9kY2hhcg==?=]

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

it's one of those days...

thanks,
rodchar

[Chris Shepherd]

rodchar wrote:

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

it's one of those days...

int newval = int.Parse(value) - 1;

If you want to keep it as a string:

value = (int.Parse(value) - 1).ToString();

Chris.

[Jon Skeet [C# MVP]]

rodchar <ro*****@discussions.microsoft.comwrote:

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

it's one of those days...

You parse it (e.g. int.Parse) and then subtract one. Call ToString() on
the result if you want it back as a string.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[=?UTF-8?B?U8O4cmVuIFJlaW5rZQ==?=]

rodchar wrote:

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

TryParse it to an int, subtract 1, and ToString it back again.

/Søren

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

You cannot do it directly as a string (well you could really).
So first you use Convert.ToInt , do the operation and call to string again:

string number = "123"
number = (Convert.ToInt32( number) + 1 ).ToString();

--
Ignacio Machin
http://www.laceupsolutions.com
Mobile & warehouse Solutions.
"rodchar" <ro*****@discussions.microsoft.comwrote in message
news:25**********************************@microsof t.com...

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

it's one of those days...

thanks,
rodchar

[j1mb0jay]

rodchar wrote:

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

it's one of those days...

thanks,
rodchar

If the value is a string ....

int i = Integer.parse(string);
i--;
string = i.ToString();
Regards j1mb0jay

[=?Utf-8?B?cm9kY2hhcg==?=]

Thanks everyone for showing the many different way to do this.
Rod.

"rodchar" wrote:

hey all,
given:
String value;

how do you subtract 1 from value assuming it's a number?

it's one of those days...

thanks,
rodchar