asp.net - Trimming Strings within C# .Net application -

new enough c#.

just can't head around trimming string. want able trim whitespace after string messing database amount of whitespace get. here's 1 of entities i'd in.

[regularexpression(@"^[a-za-z0-9 ]+$", errormessage = "use letters , numbers please")] [display(name = "serial number ")] public string serialno {         {         try         {             string serialnumber = serialno.trim();             return serialnumber;         }         catch (exception e)         {             console.writeline(e);             return serialno;         }     }     set     {         this.serialno = serialno;     } } 

i don't know if i'm going wrong appreciated!

edit: error "an unhandled exception of type 'system.stackoverflowexception' occurred in photocopierinformationmanagementservices.dll"

the following end in stackoverflow excption keep executing infinitely, set block getting called again , due this.serialno= inside set block:

set {     this.serialno = serialno; // calling set of serialno recursively } 

you can change code :

private string _serialno; [regularexpression(@"^[a-za-z0-9 ]+$", errormessage = "use letters , numbers please")] [display(name = "serial number ")] public string serialno {         {         try         {             _serialno= _serialno.trim();             return _serialno;         }         catch (exception e)         {             console.writeline(e);             return _serialno;         }     }     set     {         _serialno= value;     } } 

but recommend trim in setter property like:

private string _serialno; [regularexpression(@"^[a-za-z0-9 ]+$", errormessage = "use letters , numbers please")] [display(name = "serial number ")] public string serialno {         {         return _serialno;     }     set     {         _serialno= value?.trim();     } }