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CompareTo Method (Object)
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UInt64.CompareTo Method (Object)

Compares this instance to a specified object and returns an indication of their relative values.

This method is not CLS-compliant.  

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

public int CompareTo (
	Object value
)
public final int CompareTo (
	Object value
)
public final function CompareTo (
	value : Object
) : int

Parameters

value

An object to compare, or a null reference (Nothing in Visual Basic).

Return Value

A signed number indicating the relative values of this instance and value.

Return Value

Description

Less than zero

This instance is less than value.

Zero

This instance is equal to value.

Greater than zero

This instance is greater than value.

-or-

value is a null reference (Nothing in Visual Basic).

Exception typeCondition

ArgumentException

value is not a UInt64.

Any instance of UInt64, regardless of its value, is considered greater than a null reference (Nothing in Visual Basic).

value must be a null reference (Nothing in Visual Basic) or an instance of UInt64; otherwise, an exception is thrown.

The following code example demonstrates the CompareTo method.

public class Temperature : IComparable {
    /// <summary>
    /// IComparable.CompareTo implementation.
    /// </summary>
    public int CompareTo(object obj) {
        if(obj is Temperature) {
            Temperature temp = (Temperature) obj;

            return m_value.CompareTo(temp.m_value);
        }
        
        throw new ArgumentException("object is not a Temperature");    
    }

    // The value holder
    protected ulong m_value;

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

public class Temperature implements IComparable
{
    /// <summary>
    /// IComparable.CompareTo implementation.
    /// </summary>
    public int CompareTo(Object obj)
    {
        if (obj instanceof Temperature) {
            Temperature temp = (Temperature)obj;
            return ((Int64)mValue).CompareTo(temp.mValue);
        }
        throw new ArgumentException("object is not a Temperature");
    } //CompareTo

    // 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 implements IComparable {
    /// <summary>
    /// IComparable.CompareTo implementation.
    /// </summary>
    public function CompareTo(obj) : int {
        if(obj.GetType() == Temperature) {
            var temp : Temperature = Temperature(obj);

            return m_value.CompareTo(temp.m_value);
        }
        
        throw new ArgumentException("object is not a Temperature");    
    }

    // 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 CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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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