Equality Operator (TdDate)

Compares two TdDates to determine whether the operand is equal to the operand.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Operator =( _
   ByVal left As TdDate, _
   ByVal right As TdDate _
) As Boolean

'Usage

public bool operator ==( 
   TdDate left,
   TdDate right
)

public:
bool operator ==( 
   TdDate left,
   TdDate right
)

Parameters

left: An instance of TdDate.
right: An instance of TdDate.

Return Value

A boolean is returned that indicates the result of the comparison.

Remarks

The value returned is true if the left is equal to the right, false otherwise.

Return Value Description

Return Value	Description
`true`	left and right are TdDate.Null -or- left is equal to right.
`false`	left or right is Null -or- left is not equal to right.

true

left and right are TdDate.Null

-or-

left is equal to right.

false

left or right is Null

-or-

left is not equal to right.

Unlike comparison operators, Equality operators do not always return false when left and right operands are Null. Therefore the reverse condition can be considered true. TdDate implementation is very similar to the Nullable class in this regard.

Example

Following example shows that the Equality operator can safely be used in an if statement.

TdDate x = TdDate.Null;
TdDate y = new TdDate(2008, 10, 10);
             
if (x == y)
{
    // x is equal to y.
    Console.WriteLine(@"X is equal to Y").
}
else
{
    // x is not equal y
    Console.WriteLine(@"X is not equal to Y").
}
             
y = TdDate.Null;
             
if (x == y)
{
    // x is equal to y.
    Console.WriteLine(@"X is equal to Y").
}
else
{
    // x is not equal y
    Console.WriteLine(@"X is not equal to Y").
}

Requirements

Target Platforms: Windows 8.1, Windows 10, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019

Reference

TdDate Structure
TdDate Members