Int32.Equals Method (Int32)
Returns a value indicating whether this instance is equal to a specified Int32 value.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- obj
-
Type:
System.Int32
An Int32 value to compare to this instance.
Implements
IEquatable(Of T).Equals(T)This method implements the System.IEquatable(Of T) interface, and performs slightly better than Int32.Equals(Object) 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 an Int32 is defined and the argument is not typed as an Object, compilers perform an implicit conversion and call the Equals(Int32) method. Otherwise, they call the Equals(Object) method, which always returns false if its obj argument is not an Int32 value. The following example illustrates the difference in behavior between the two method overloads. In the case of the Byte, Int16, SByte, and UInt16 values, the first comparison returns true because the compiler automatically performs a widening conversion and calls the Equals(Int32) method, whereas the second comparison returns false because the compiler calls the Equals(Object) method.
Module Example Dim value As Int32 = 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 long1 As Long = 112 Console.WriteLine("value = long1: {0,17}", value.Equals(long1)) TestObjectForEquality(long1) 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 ulong1 As ULong = 112 Console.WriteLine("value = ulong1: {0,17}", value.Equals(ulong1)) TestObjectForEquality(ulong1) 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 (Int32) = 112 (Byte): False ' ' value = short1: True ' 112 (Int32) = 112 (Int16): False ' ' value = long1: False ' 112 (Int32) = 112 (Int64): False ' ' value = sbyte1: True ' 112 (Int32) = 112 (SByte): False ' ' value = ushort1: True ' 112 (Int32) = 112 (UInt16): False ' ' value = ulong1: False ' 112 (Int32) = 112 (UInt64): False ' ' value = dec1: False ' 112 (Int32) = 112 (Decimal): False ' ' value = dbl1: False ' 112 (Int32) = 112 (Double): False
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