UInt64::Equals Method (UInt64)

.NET Framework (current version)

Returns a value indicating whether this instance is equal to a specified UInt64 value.

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

Syntax

public:
virtual bool Equals(
	unsigned long long obj
) sealed

Parameters

obj: Type: System::UInt64
A UInt64 value to compare to this instance.

Return Value

Type: System::Boolean

true if obj has the same value as this instance; otherwise, false.

Implements

IEquatable<T>::Equals(T)

Remarks

This method implements the System::IEquatable<T> interface, and performs slightly better than Equals because it does not have to convert the obj parameter to an object.

Notes to Callers:

Compiler overload resolution may account for an apparent difference in the behavior of the two Equals method overloads. If an implicit conversion between the obj argument and a UInt64 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(UInt64) method. Otherwise, they call the Equals(Object^) method, which always returns false if its obj argument is not a UInt64 value. The following example illustrates the difference in behavior between the two method overloads. In the case of the Byte, UInt16, and UInt32 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(UInt64) method, whereas the second comparison returns false because the compiler calls the Equals(Object^) method.

C++

No code example is currently available or this language may not be supported.

Examples

The following example demonstrates the Equals method.

C++

using namespace System;

int main()
{
      UInt64 value1 = 50;
      UInt64 value2 = 50;

      // Display the values.
        Console::WriteLine("value1:   Type: {0}   Value: {1}",
                           value1.GetType()->Name, value1);
        Console::WriteLine("value2:   Type: {0}   Value: {1}",
                         value2.GetType()->Name, value2);

        // Compare the two values.
        Console::WriteLine("value1 and value2 are equal: {0}",
                           value1.Equals(value2));
}
// The example displays the following output:
//       value1:   Type: UInt64   Value: 50
//       value2:   Type: UInt64   Value: 50
//       value1 and value2 are equal: True

Version Information

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
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