String and int comparison

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C#

foreach (String entry in GetPageParams().AllKeys)
               {
                   id = Convert.ToInt32(GetPageParams<string>("hdnHistorySave"));
                   if (entry.StartsWith("txtMessage"))
                   {
                       TicketId = entry.ToString().Substring(10);
                       if (id == Convert.ToInt32(TicketId))
                       {
                           objTicket.TicketDetailId = id;
                           objTicket.Message = GetPageParams<string>("txtMessage"+id);

                       }
                   }
               }

Is it possible to do like this?? Because am getting an error ("input string not i correct format") at the id==TicketId Checking .. Please help !

Posted 14-Jun-12 2:05am

Arjun Menon U.K

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Timberbird 14-Jun-12 8:11am

Check your TicketId value, it cannot be converted to Int32 - put a breakpoint and see its value. Also, entry.ToString() is not needed as entry is already a string

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Abhinav S · Accepted Answer · 2012-06-14T02:08:00

Solution 1

You can compare two values of the same type.
If you have a string "12" and a number 2, you can convert the string to a number and then compare it with 2.

If your string is "A12", then you won't be able to convert this to a number.

To avoid an error while converting an alphanumeric string to a number, you can use the TryParse method[^]. This will help you avoid an error while conversion.

Posted 14-Jun-12 2:08am

Abhinav S

v3

Comments

Arjun Menon U.K 14-Jun-12 8:11am

Thanks Abinav....I'll try and let you know

NaveenNeo 14-Jun-12 8:15am

Abhinav S is correct, but why can't you convert int to string and then compare them.Because you are only performing the comparison so i think comparing string will work in your case.

Arjun Menon U.K 14-Jun-12 8:58am

Worked Fine... there was a comma coming in the string .. my fault... Thanks a lot Abinav and Naveenaka :) Cheers

BillW33 14-Jun-12 9:02am

Good answer, Abhinav, +5.

Abhinav S 15-Jun-12 2:58am

Thank you.

Espen Harlinn 15-Jun-12 2:55am

Perfect :-D

Abhinav S 15-Jun-12 2:58am

Thank you.