UInt64.Parse Method (String)
Converts the string representation of a number to its 64-bit unsigned integer equivalent.
This API is not CLS-compliant.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- s
-
Type:
System.String
A string that represents the number to convert.
| Exception | Condition |
|---|---|
| ArgumentNullException | The s parameter is null. |
| FormatException | The s parameter is not in the correct format. |
| OverflowException | The s parameter represents a number less than UInt64.MinValue or greater than UInt64.MaxValue. |
The s parameter should be the string representation of a number in the following form.
[ws][sign]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. 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. |
digits | A sequence of digits ranging from 0 to 9. Any leading zeros are ignored. |
Note |
|---|
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 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) { try { ulong number = UInt64.Parse(value); Console.WriteLine("{0} --> {1}", value, number); } catch (FormatException) { Console.WriteLine("{0}: Bad Format", value); } catch (OverflowException) { Console.WriteLine("{0}: Overflow", value); } } // 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 --> 14065839182 // 16e07: Bad Format // 134985.0: Bad Format // -12034: Overflow
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
