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UInt64.Parse Method (String, NumberStyles)

Converts the string representation of a number in a specified style 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
)
/** @attribute CLSCompliantAttribute(false) */ 
public static UInt64 Parse (
	String s, 
	NumberStyles style
)
CLSCompliantAttribute(false) 
public static function Parse (
	s : String, 
	style : NumberStyles
) : ulong
Not applicable.

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.

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 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) {
        Temperature temp = new Temperature();

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

        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)
    {
        Temperature temp = new Temperature();

        if (s.TrimEnd(null).EndsWith("'F")) {
            temp.set_Value(System.Convert.ToInt64(UInt64.Parse(s.Remove(
                s.LastIndexOf('\''), 2), styles)));
        }
        else {
            temp.set_Value(System.Convert.ToInt64(UInt64.Parse(s, styles)));
        }
        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) : Temperature {
        var temp : Temperature = new Temperature();

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

        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 Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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