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UInt64.Parse Method (String, NumberStyles, IFormatProvider)

Converts the string representation of a number in a specified style and culture-specific format to its 64-bit unsigned integer equivalent.

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

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

[CLSCompliantAttribute(false)] 
public static ulong Parse (
	string s,
	NumberStyles style,
	IFormatProvider provider
)
/** @attribute CLSCompliantAttribute(false) */ 
public static UInt64 Parse (
	String s, 
	NumberStyles style, 
	IFormatProvider provider
)
CLSCompliantAttribute(false) 
public static function Parse (
	s : String, 
	style : NumberStyles, 
	provider : IFormatProvider
) : ulong

Parameters

s

A string representing the number to convert.

style

A bitwise combination of NumberStyles values that indicates the permitted format of s. A typical value to specify is Integer.

provider

An IFormatProvider that supplies culture-specific formatting information about s.

Return Value

A 64-bit unsigned integer equivalent to the number specified in s.

Exception typeCondition

ArgumentNullException

The s parameter is a null reference (Nothing in Visual Basic).

ArgumentException

style is not a NumberStyles value.

-or-

style is not a combination of AllowHexSpecifier and HexNumber values.

FormatException

The s parameter is not in a format compliant with style.

OverflowException

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

The s parameter contains a number of the form:

[ws][sign]digits[ws]

Or, if style includes AllowHexSpecifier:

[ws]hexdigits[ws]

Items in square brackets ([ and ]) are optional, and other items are as follows.

ws

Optional white space if permitted by style.

sign

An optional sign.

digits

A sequence of digits from 0 through 9.

hexdigits

A sequence of hexadecimal digits from 0 through f, or 0 through F.

The provider parameter is an IFormatProvider that obtains a NumberFormatInfo. The NumberFormatInfo provides culture-specific information about the format of s. If provider is a null reference (Nothing in Visual Basic), the NumberFormatInfo for the current culture is used.

The following example demonstrates the Parse method.

public class Temperature {
    /// <summary>
    /// Parses the temperature from a string in form
    /// [ws][sign]digits['F|'C][ws]
    /// </summary>
    public static Temperature Parse(string s, NumberStyles styles, IFormatProvider provider) {
        Temperature temp = new Temperature();

        if( s.TrimEnd(null).EndsWith("'F") ) {
            temp.Value = UInt64.Parse( s.Remove(s.LastIndexOf('\''), 2), styles, provider);
        }
        else {
            temp.Value = UInt64.Parse(s, styles, provider);
        }

        return temp;
    }

    // The value holder
    protected ulong m_value;

    public ulong Value {
        get {
            return m_value;
        }
        set {
            m_value = value;
        }
    }
}

public class Temperature
{
    /// <summary>
    /// Parses the temperature from a string in form
    /// [ws][sign]digits['F|'C][ws]
    /// </summary>
    public static Temperature Parse(String s, NumberStyles styles, 
        IFormatProvider provider)
    {
        Temperature temp = new Temperature();

        if (s.TrimEnd(null).EndsWith("'F")) {
            temp.set_Value(System.Convert.ToInt64(UInt64.Parse(s.Remove(
                s.LastIndexOf('\''), 2), styles, provider)));
        }
        else {
            temp.set_Value(System.Convert.ToInt64(UInt64.Parse(s, styles,
                provider)));
        }
        return temp;
    } //Parse

    // The value holder
    protected long mValue;

    /** @property 
     */
    public long get_Value()
    {
        return mValue;
    } //get_Value

    /** @property 
     */
    public void set_Value(long value)
    {
        mValue = value;
    } //set_Value
} //Temperature

public class Temperature {
    /// <summary>
    /// Parses the temperature from a string in form
    /// [ws][sign]digits['F|'C][ws]
    /// </summary>
    public static function Parse(s : String, styles : NumberStyles, provider : IFormatProvider) : Temperature {
        var temp : Temperature = new Temperature();

        if( s.TrimEnd(null).EndsWith("'F") ) {
            temp.Value = UInt64.Parse( s.Remove(s.LastIndexOf('\''), 2), styles, provider);
        }
        else {
            temp.Value = UInt64.Parse(s, styles, provider);
        }

        return temp;
    }

    // The value holder
    protected var m_value : ulong;

    public function get Value() : ulong {
        return m_value;
            }
            
            public function set Value(value : ulong) {                        
        m_value = value;
    }
}

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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