types and variables declaration RSS

• • Reply
  

  ronaldorezen...

  Member

  28 Points

  61 Posts

  types and variables declaration

  Jun 16, 2012 05:21 PM|LINK

  I have a doubt about a type declaration. In the code below, If I don't convert my already Decimal object to Decimal, I'm receiving this error: Error: No overload for method 'ToString' takes '1' arguments.

  Decimal? valorPatrocinio = null;
      if (IsPost) {
          if (!String.IsNullOrEmpty(Request.Form["valorPatrocinio"]) ){
              if (Request.Form["valorPatrocinio"].IsDecimal()){
                  valorPatrocinio = Request.Form["valorPatrocinio"].AsDecimal();
              }else{
                  ModelState.AddError("valorPatrocinio", "O valor informado não é válido.");
              }
          }
  
      }else if (detalhe!=null){
          valorPatrocinio = detalhe.ValorPatrocinio;
      }
  
  //This works: (Decimal)valorPatrocinio).ToString("C2")
  //This doesnt works: valorPatrocinio.ToString("C2")
      <input type="text" id="valorPatrocinio" name="valorPatrocinio" title="Informe o valor do patrocínio" 
  value="@(valorPatrocinio!=null ? ((Decimal)valorPatrocinio).ToString("C2") : "")"  />

  • Edited by ronaldorezende on Jun 16, 2012 05:22 PM
  • Edited by ronaldorezende on Jun 16, 2012 05:23 PM
  • Edited by ronaldorezende on Jun 16, 2012 05:24 PM
  • Edited by ronaldorezende on Jun 16, 2012 05:25 PM
  • Edited by ronaldorezende on Jun 16, 2012 05:26 PM
• • Reply
  

  AidyF

  Star

  9204 Points

  1570 Posts

  Re: types and variables declaration

  Jun 16, 2012 06:11 PM|LINK

  The decimal class supports various implementations of ToString, including one that accepts a format string as you are trying to use.  Vars of type decimal? are actually instances of Nullable<T> which only implements ToString with no variables.  That is why you have to cast to decimal in order to use the desired ToString

  • Edited by AidyF on Jun 16, 2012 06:11 PM
  • Marked as answer by ronaldorezende on Jun 16, 2012 06:13 PM