Information.IsDate(Object) Method
Definition
Important
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Returns a Boolean
value indicating whether an expression represents a valid Date
value.
public:
static bool IsDate(System::Object ^ Expression);
public static bool IsDate (object? Expression);
public static bool IsDate (object Expression);
static member IsDate : obj -> bool
Public Function IsDate (Expression As Object) As Boolean
Parameters
- Expression
- Object
Required. Object
expression.
Returns
Returns a Boolean
value indicating whether an expression represents a valid Date
value.
Examples
The following example uses the IsDate
function to determine if several variables represent valid DateTime values.
Dim firstDate, secondDate As Date
Dim timeOnly, dateAndTime, noDate As String
Dim dateCheck As Boolean
firstDate = CDate("February 12, 1969")
secondDate = #2/12/1969#
timeOnly = "3:45 PM"
dateAndTime = "March 15, 1981 10:22 AM"
noDate = "Hello"
dateCheck = IsDate(firstDate)
dateCheck = IsDate(secondDate)
dateCheck = IsDate(timeOnly)
dateCheck = IsDate(dateAndTime)
dateCheck = IsDate(noDate)
In the preceding example, IsDate
returns True
for the first four calls and False
for the last call.
Remarks
IsDate
returns True
if Expression
is of the DateTime data type or can be converted to it; otherwise, it returns False
.
The DateTime data type holds both a date value and a time value. IsDate
returns True
if Expression
represents a valid date, a valid time, or a valid date and time.
Applies to
See also
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