April Rechner in .NET

Question

Wo ich eine gute April Rechnerfunktion für UK Geschäft ..

Answer 1

private double GetAPR() 
{ 

    int i = 0; 
    for (;;) 
    { 

     apr = (rate*((Math.Pow((1 + rate), duration)))/
       ((Math.Pow((1 + rate), duration)) - 1)) - 
       (installment/(loanamount - extracost)); 
     if (apr >= 0) 
     { 
      lblapr.Text = apr.ToString() + " + " + i.ToString(); 
      break; 
     } 
     else 
     { 
      i++; 
      rate = rate*1200; 
      rate = Math.Round(rate, 3); 
      rate = rate + 0.01; 
      rate = rate/1200; 
     } 
    } 

    return rate; 
}