UInt32.Parse Method (String)

Updated: May 2010

Converts the string representation of a number to its 32-bit unsigned integer equivalent.

This API is not CLS-compliant. The CLS-compliant alternative is Parse(String).

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

public static uint Parse(
	string s


Type: System.String
A string that represents the number to convert.

Return Value

Type: System.UInt32
A 32-bit unsigned integer equivalent to the number contained in s.


The s parameter is null.


The s parameter is not of the correct format.


The s parameter represents a number that is less than UInt32.MinValue or greater than UInt32.MaxValue.

The s parameter should be the string representation of a number in the following form.


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




Optional white space.


An optional sign. Valid sign characters are determined by the NumberFormatInfo.NegativeSign and NumberFormatInfo.PositiveSign properties of the current culture. However, the negative sign symbol can be used only with zero; otherwise, the method throws an OverflowException.


A sequence of digits ranging from 0 to 9. Any leading zeros are ignored.


The string specified by the s parameter is interpreted by using the NumberStyles.Integer style. It cannot contain any group separators or decimal separator, and it cannot have a decimal portion.

The s parameter is parsed by using the formatting information in a System.Globalization.NumberFormatInfo object that is initialized for the current system culture. For more information, see NumberFormatInfo.CurrentInfo. To parse a string by using the formatting information of a specific culture, use the Parse(String, IFormatProvider) method.

The following example uses the Parse(String) method to parse an array of string values.

string[] values = { "+13230", "-0", "1,390,146", "$190,235,421,127",
                    "0xFA1B", "163042", "-10", "14065839182",
                    "16e07", "134985.0", "-12034" };
foreach (string value in values)
      uint number = UInt32.Parse(value);
      outputBlock.Text += String.Format("{0} --> {1}", value, number) + "\n";
   catch (FormatException)
      outputBlock.Text += String.Format("{0}: Bad Format", value) + "\n";
   catch (OverflowException)
      outputBlock.Text += String.Format("{0}: Overflow", value) + "\n";
// The example displays the following output:
//       +13230 --> 13230
//       -0 --> 0
//       1,390,146: Bad Format
//       $190,235,421,127: Bad Format
//       0xFA1B: Bad Format
//       163042 --> 163042
//       -10: Overflow
//       14065839182: Overflow
//       16e07: Bad Format
//       134985.0: Bad Format
//       -12034: Overflow      


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.




May 2010

Revised extensively.

Information enhancement.