C# Single TryParse(String, Single)

Description

Single TryParse(String, Single) converts the string representation of a number to its single-precision floating-point number equivalent. A return value indicates whether the conversion succeeded or failed.

Syntax

Single.TryParse(String, Single) has the following syntax.


public static bool TryParse(
  string s,
  out float result
)

Parameters

Single.TryParse(String, Single) has the following parameters.

s - A string representing a number to convert.
result - When this method returns, contains single-precision floating-point number equivalent to the numeric value or symbol 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 a number in a valid format, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized.

Returns

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

Example

The following example uses the TryParse(String, Single) method to convert the string representations of numeric values to Single values.


/*from www .  j  a v  a 2  s .  c  om*/
using System;
public class MainClass{
  public static void Main(String[] argv){  
    string value;
    float number;
    
    // Parse a floating-point value with a thousands separator. 
    value = "1,234.56";
    if (Single.TryParse(value, out number))
       Console.WriteLine(number);
    else
       Console.WriteLine("Unable to parse '{0}'.", value);      
    
    // Parse a floating-point value with a currency symbol and a  
    // thousands separator. 
    value = "$1,234.56";
    if (Single.TryParse(value, out number))
       Console.WriteLine(number);
    else
       Console.WriteLine("Unable to parse '{0}'.", value);   
    
    // Parse value in exponential notation. 
    value = "-1.234e6";
    if (Single.TryParse(value, out number))
       Console.WriteLine(number);
    else
       Console.WriteLine("Unable to parse '{0}'.", value);   
    
    // Parse a negative integer value. 
    value = "-123456787123456781";
    if (Single.TryParse(value, out number))
       Console.WriteLine(number);
    else
       Console.WriteLine("Unable to parse '{0}'.", value);   

  }
}

The code above generates the following result.