UInt32.Equals Method (Object)

 

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

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

Public Overrides Function Equals (
	obj As Object
) As Boolean

Parameters

obj
Type: System.Object

An object to compare with this instance.

Return Value

Type: System.Boolean

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

Module Example
   Dim value As UInt32 = 112

   Public Sub Main()
      Dim byte1 As Byte = 112
      Console.WriteLine("value = byte1: {0,16}", value.Equals(byte1))
      TestObjectForEquality(byte1)

      Dim short1 As Short = 112
      Console.WriteLine("value = short1: {0,17}", value.Equals(short1))
      TestObjectForEquality(short1)

      Dim long1 As Long = 112
      Console.WriteLine("value = long1: {0,18}", value.Equals(long1))
      TestObjectForEquality(long1)

      Dim sbyte1 As SByte = 112
      Console.WriteLine("value = sbyte1: {0,17}", value.Equals(sbyte1))
      TestObjectForEquality(sbyte1)

      Dim ushort1 As UShort = 112
      Console.WriteLine("value = ushort1: {0,16}", value.Equals(ushort1))
      TestObjectForEquality(ushort1)

      Dim ulong1 As ULong = 112
      Console.WriteLine("value = ulong1: {0,19}", value.Equals(ulong1))
      TestObjectForEquality(ulong1)

      Dim dec1 As Decimal = 112d
      Console.WriteLine("value = dec1: {0,21}", value.Equals(dec1))
      TestObjectForEquality(dec1)

      Dim dbl1 As Double = 112
      Console.WriteLine("value = dbl1: {0,20}", 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 (UInt32) = 112 (Byte): False
'
'       value = short1:             False
'       112 (UInt32) = 112 (Int16): False
'
'       value = long1:              False
'       112 (UInt32) = 112 (Int64): False
'
'       value = sbyte1:             False
'       112 (UInt32) = 112 (SByte): False
'
'       value = ushort1:             True
'       112 (UInt32) = 112 (UInt16): False
'
'       value = ulong1:               False
'       112 (UInt32) = 112 (UInt64): False
'
'       value = dec1:                 False
'       112 (UInt32) = 112 (Decimal): False
'
'       value = dbl1:                False
'       112 (UInt32) = 112 (Double): False

The following code example demonstrates the Equals method.

Dim myVariable1 As UInt32 = UInt32.Parse(20)
Dim myVariable2 As UInt32 = UInt32.Parse(20)

' 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

Universal Windows Platform
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
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