Decimal.Parse Method (String)

July 28, 2014

Converts the string representation of a number to its Decimal equivalent.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static decimal Parse(
	string s
)

Parameters

s
Type: System.String
The string representation of the number to convert.

Return Value

Type: System.Decimal
The Decimal number equivalent to the number contained in s.

ExceptionCondition
ArgumentNullException

s is null.

FormatException

s is not in the correct format.

OverflowException

s represents a number less than MinValue or greater than MaxValue.

Parameter s contains a number of the form:

[ws][sign][digits,]digits[.fractional-digits][ws]

Elements in square brackets ([ and ]) are optional. The following table describes each element.

Element

Description

ws

Optional white space.

sign

An optional sign.

digits

A sequence of digits ranging from 0 to 9.

,

A culture-specific thousands separator symbol.

.

A culture-specific decimal point symbol.

fractional-digits

A sequence of digits ranging from 0 to 9.

Parameter s is interpreted using the NumberStyles.Number style. This means that white space and thousands separators are allowed but currency symbols are not. To explicitly define the elements (such as currency symbols, thousands separators, and white space) that can be present in s, use either the Decimal.Parse(String, NumberStyles) or the Decimal.Parse(String, NumberStyles, IFormatProvider) method.

Parameter s is parsed using the formatting information in a NumberFormatInfo initialized for the current system culture. For more information, see CurrentInfo. To parse a string using the formatting information of some other culture, use the Decimal.Parse(String, IFormatProvider) or Decimal.Parse(String, NumberStyles, IFormatProvider) method.

If necessary, the value of s is rounded using rounding to nearest.

A Decimal has 29 digits of precision. If s represents a number that has more than 29 digits, but has a fractional part and is within the range of MaxValue and MinValue, the number is rounded, not truncated, to 29 digits using rounding to nearest.

If during a parse operation a separator is encountered in the s parameter, and the applicable currency or number decimal and group separators are the same, the parse operation assumes that the separator is a decimal separator rather than a group separator. For more information about separators, see CurrencyDecimalSeparator, NumberDecimalSeparator, CurrencyGroupSeparator, and NumberGroupSeparator.

The following code example uses the Parse(String) method to parse string representations of Decimal values.


string value;
decimal number;
// Parse an integer with thousands separators. 
value = "16,523,421";
number = Decimal.Parse(value);
outputBlock.Text += String.Format("'{0}' converted to {1}.", value, number) + "\n";
// Displays: 
//    16,523,421' converted to 16523421.

// Parse a floating point value with thousands separators
value = "25,162.1378";
number = Decimal.Parse(value);
outputBlock.Text += String.Format("'{0}' converted to {1}.", value, number) + "\n";
// Displays: 
//    25,162.1378' converted to 25162.1378.

// Parse a floating point number with US currency symbol.
value = "$16,321,421.75";
try
{
   number = Decimal.Parse(value);
   outputBlock.Text += String.Format("'{0}' converted to {1}.", value, number) + "\n";
}
catch (FormatException)
{
   outputBlock.Text += String.Format("Unable to parse '{0}'.", value) + "\n";
}
// Displays:
//    Unable to parse '$16,321,421.75'.   

// Parse a number in exponential notation
value = "1.62345e-02";
try
{
   number = Decimal.Parse(value);
   outputBlock.Text += String.Format("'{0}' converted to {1}.", value, number) + "\n";
}
catch (FormatException)
{
   outputBlock.Text += String.Format("Unable to parse '{0}'.", value) + "\n";
}
// Displays: 
//    Unable to parse '1.62345e-02'. 


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

Show:
© 2014 Microsoft