Regular Exp

Question

hi,

 I want accept decimal no eg1023.56, 59.00,1566.36

decimal point is allow for only one time

 

public static bool validdecimal(string text)
{
Regex regex = new Regex("^\d*\.?((25)|(50)|(5)|(75)|(0)|(00))?$");////Not work
return !regex.IsMatch(text);
}

 

on call

e.Handled = !ClassValidation.Validdecimal(e.Text);