Int64.Equals Method (Object)
Returns a value indicating whether this instance is equal to a specified object.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- obj
-
Type:
System.Object
An object to compare with this instance.
Return Value
Type: System.Booleantrue if obj is an instance of an Int64 and equals the value of this instance; otherwise, false.
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 an Int64 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(Int64) method. Otherwise, they call the Equals(Object) method, which always returns false if its obj argument is not an Int64 value. The following example illustrates the difference in behavior between the two method overloads. In the case of the Byte, SByte, Int16, UInt16, Int32, and UInt32 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(Int64) method, whereas the second comparison returns false because the compiler calls the Equals(Object) method.
Module Example Dim value As Int64 = 112 Public Sub Main() Dim byte1 As Byte = 112 Console.WriteLine("value = byte1: {0,15}", value.Equals(byte1)) TestObjectForEquality(byte1) Dim short1 As Short = 112 Console.WriteLine("value = short1: {0,15}", value.Equals(short1)) TestObjectForEquality(short1) Dim int1 As Integer = 112 Console.WriteLine("value = int1: {0,17}", value.Equals(int1)) TestObjectForEquality(int1) Dim sbyte1 As SByte = 112 Console.WriteLine("value = sbyte1: {0,15}", value.Equals(sbyte1)) TestObjectForEquality(sbyte1) Dim ushort1 As UShort = 112 Console.WriteLine("value = ushort1: {0,15}", value.Equals(ushort1)) TestObjectForEquality(ushort1) Dim uint1 As UInteger = 112 Console.WriteLine("value = uint1: {0,17}", value.Equals(uint1)) TestObjectForEquality(uint1) Dim dec1 As Decimal = 112d Console.WriteLine("value = dec1: {0,20}", value.Equals(dec1)) TestObjectForEquality(dec1) Dim dbl1 As Double = 112 Console.WriteLine("value = dbl1: {0,19}", value.Equals(dbl1)) TestObjectForEquality(dbl1) End Sub Private Sub TestObjectForEquality(obj As Object) Console.WriteLine("{0} ({1}) = {2} ({3}): {4}", value, value.GetType().Name, obj, obj.GetType().Name, value.Equals(obj)) Console.WriteLine() End Sub End Module ' The example displays the following output: ' value = byte1: True ' 112 (Int64) = 112 (Byte): False ' ' value = short1: True ' 112 (Int64) = 112 (Int16): False ' ' value = int1: True ' 112 (Int64) = 112 (Int32): False ' ' value = sbyte1: True ' 112 (Int64) = 112 (SByte): False ' ' value = ushort1: True ' 112 (Int64) = 112 (UInt16): False ' ' value = uint1: True ' 112 (Int64) = 112 (UInt32): False ' ' value = dec1: False ' 112 (Int64) = 112 (Decimal): False ' ' value = dbl1: False ' 112 (Int64) = 112 (Double): False
The following code example illustrates the use of Equals in the context of Int64, comparing two long values and returning true if they represent the same number, or false if they do not.
Dim myVariable1 As Int64 = 80 Dim myVariable2 As Int64 = 80 ' Get and display the declaring type. Console.WriteLine(ControlChars.NewLine + "Type of 'myVariable1' is '{0}' and" + _ " value is :{1}", myVariable1.GetType().ToString(), myVariable1.ToString()) Console.WriteLine("Type of 'myVariable2' is '{0}' and" + _ " value is :{1}", myVariable2.GetType().ToString(), myVariable2.ToString()) ' Compare 'myVariable1' instance with 'myVariable2' Object. If myVariable1.Equals(myVariable2) Then Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " + _ "'myVariable2' are equal") Else Console.WriteLine(ControlChars.NewLine + "Structures 'myVariable1' and " + _ "'myVariable2' are not equal") End If
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