C# Int16 TryParse(String, NumberStyles, IFormatProvider, Int16)

Description

Int16 TryParse(String, NumberStyles, IFormatProvider, Int16)converts the string representation of a number in a specified style and culture-specific format to its 16-bit signed integer equivalent. A return value indicates whether the conversion succeeded or failed.

Syntax

Int16.TryParse(String, NumberStyles, IFormatProvider, Int16) has the following syntax.


public static bool TryParse(
  string s,//from   w  ww  .  j ava  2 s .  c o  m
  NumberStyles style,
  IFormatProvider provider,
  out short result
)

Parameters

Int16.TryParse(String, NumberStyles, IFormatProvider, Int16) has the following parameters.

s - A string containing a number to convert. The string is interpreted using the style specified by style.
style - A bitwise combination of enumeration values that indicates the style elements that can be present in s. A typical value to specify is NumberStyles.Integer.
provider - An object that supplies culture-specific formatting information about s.
result - When this method returns, contains the 16-bit signed integer value equivalent to the number contained in s, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is null or String.Empty, is not in a format compliant with style, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized.

Returns

Int16.TryParse(String, NumberStyles, IFormatProvider, Int16) method returns true if s was converted successfully; otherwise, false.

Example

The following example calls the Int16.TryParse(String, NumberStyles, IFormatProvider, Int16) method with a number of different string values.


using System;//w ww.  ja v a 2 s  . co  m
using System.Globalization;

public class StringParsing
{
   public static void Main()
   {
      string numericString;
      NumberStyles styles;

      numericString = "12345";
      styles = NumberStyles.Integer;
      CallTryParse(numericString, styles);

      numericString = "-1234";
      styles = NumberStyles.None;
      CallTryParse(numericString, styles);

      numericString = "12345.00";
      styles = NumberStyles.Integer | NumberStyles.AllowDecimalPoint;
      CallTryParse(numericString, styles);

      numericString = "12345.72";
      styles = NumberStyles.Integer | NumberStyles.AllowDecimalPoint;
      CallTryParse(numericString, styles);

      numericString = "12,234"; 
      styles = NumberStyles.Integer | NumberStyles.AllowThousands;
      CallTryParse(numericString, styles);

      numericString = "12E-01";
      styles = NumberStyles.Integer | NumberStyles.AllowExponent;
      CallTryParse(numericString, styles); 

      numericString = "12E03";
      CallTryParse(numericString, styles); 

      numericString = "80c1";
      CallTryParse(numericString, NumberStyles.HexNumber);

      numericString = "0x80C1";
      CallTryParse(numericString, NumberStyles.HexNumber);      
   }

   private static void CallTryParse(string stringToConvert, NumberStyles styles)
   {
      short number;
      bool result = Int16.TryParse(stringToConvert, styles, 
                                   CultureInfo.InvariantCulture, out number);
      if (result)
         Console.WriteLine("Converted '{0}' to {1}.", stringToConvert, number);
      else
         Console.WriteLine("Attempted conversion of '{0}' failed.", 
                           Convert.ToString(stringToConvert));
   }
}

The code above generates the following result.