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

Description

SByte TryParse(String, NumberStyles, IFormatProvider, SByte)tries to convert the string representation of a number in a specified style and culture-specific format to its SByte equivalent, and returns a value that indicates whether the conversion succeeded.

Syntax

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


[CLSCompliantAttribute(false)]/*from www. j  a  va  2 s  .  c  om*/
public static bool TryParse(
  string s,
  NumberStyles style,
  IFormatProvider provider,
  out sbyte result
)

Parameters

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

s - A string representing a number to convert.
style - A bitwise combination of enumeration values that indicates the permitted format of s. A typical value to specify is Integer.
provider - An object that supplies culture-specific formatting information about s.
result - When this method returns, contains the 8-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

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

Example

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


using System;/*from   w  w  w.  j  av a2  s  . co m*/
using System.Globalization;

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

      numericString = "123";
      styles = NumberStyles.Integer;
      CallTryParse(numericString, styles);

      numericString = "-123";
      styles = NumberStyles.None;
      CallTryParse(numericString, styles);

      numericString = "123.00";
      styles = NumberStyles.Integer | NumberStyles.AllowDecimalPoint;
      CallTryParse(numericString, styles);

      numericString = "123.72";
      styles = NumberStyles.Integer | NumberStyles.AllowDecimalPoint;
      CallTryParse(numericString, styles);

      numericString = "10E-01";
      styles = NumberStyles.Integer | NumberStyles.AllowExponent;
      CallTryParse(numericString, styles); 

      numericString = "12E-01";
      CallTryParse(numericString, styles);

      numericString = "12E01";
      CallTryParse(numericString, styles); 

      numericString = "C8";
      CallTryParse(numericString, NumberStyles.HexNumber);

      numericString = "0x8C";
      CallTryParse(numericString, NumberStyles.HexNumber);
   }

   private static void CallTryParse(string stringToConvert, NumberStyles styles)
   {
      sbyte number;
      bool result = SByte.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.