This method is used to converts the specified string representation of a number to an equivalent single-precision floating-point number, using the specified culture-specific formatting information.
Syntax:
public static float ToSingle (string value, IFormatProvider provider);
Parameters:
- value: It is a string that contains the number to convert.
- provider: It is an object that supplies culture-specific formatting information.
Return Value: This method returns a single-precision floating-point number that is equivalent to the number in value, or 0 (zero) if value is null.
Exceptions:
- FormatException: If the value does not consist of an optional sign followed by a sequence of digits (0 through 9).
- OverFlowException: If the value represents a number that is less than MinValue or greater than MaxValue.
Below programs illustrate the use of Convert.ToSingle(String, IFormatProvider) Method:
Example 1:
csharp
// C# program to demonstrate the // Convert.ToSingle() Method using System;
using System.Globalization;
class GFG {
// Main Method public static void Main()
{ try {
// creating object of CultureInfo
CultureInfo cultures = new CultureInfo( "en-US" );
// declaring and initializing String array
string [] values = { "123.45" , "+12.345" ,
"-1234.5" };
// calling get() Method
Console.Write( "Converted float value"
+ " from a specified string " );
for ( int j = 0; j < values.Length; j++)
{
get (values[j], cultures);
}
}
catch (FormatException e)
{
Console.WriteLine( "\n" );
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
catch (OverflowException e)
{
Console.WriteLine( "\n" );
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
} // Defining get() method public static void get ( string s,
CultureInfo cultures)
{ // converting string to specified float
float val = Convert.ToSingle(s, cultures);
// display the converted float value
Console.Write( " {0}, " , val);
} } |
Output
Converted float value from a specified string 123.45, 12.345, -1234.5,
Example 2: For FormatException
csharp
// C# program to demonstrate the // Convert.ToSingle() Method using System;
using System.Globalization;
class GFG {
// Main Method public static void Main()
{ try {
// creating object of CultureInfo
CultureInfo cultures = new CultureInfo( "en-US" );
// declaring and initializing String array
string [] values = { "12.345" , "+1234.5" ,
"-123.45" };
// calling get() Method
Console.Write( "Converted float value"
+ " of specified strings: " );
for ( int j = 0; j < values.Length; j++)
{
get (values[j], cultures);
}
Console.WriteLine( "\n" );
string s = "123 456, 789" ;
Console.WriteLine( "format of s is invalid " );
// converting string to specified float
float val = Convert.ToSingle(s, cultures);
// display the converted float value
Console.Write( " {0}, " , val);
}
catch (FormatException e)
{
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
catch (OverflowException e)
{
Console.Write( "Exception Thrown: " );
Console.Write( "{0}" , e.GetType(), e.Message);
}
} // Defining get() method public static void get ( string s,
CultureInfo cultures)
{ // converting string to
// specified float value
float val = Convert.ToSingle(s, cultures);
// display the converted
// float value
Console.Write( " {0}, " , val);
} } |
Output:
Converted float value of specified strings: 12.345, 1234.5, -123.45, format of s is invalid Exception Thrown: System.FormatException
Reference: