System.DateTime

The System.DateTime is the main .NET class for working with dates and times.

System.DateTime.Now

System.DateTime.UtcNow

Gets a DateTime object that is set to the current date and time expressed in the UTC (Coordinated Universal Time) format.

System.DateTime oDateTime; 
oDateTime = System.DateTime.UtcNow; 
System.Diagnostics.Debug.Print(oDateTime.ToString("T")); 
// 8:19:43 PM 

System.DateTime.Today

System.DateTime.Parse

This assumes that dates are in US date format "mm/dd/yyyy"
This converts a string representation to a DateTime object.

Dim sDateTimeString As String 

System.DateTime.Parse(sDateTimeString) 

System.DateTime.ParseExact

This converts a string representation to a DateTime object. The format of the string representation must match the specified format.

Dim sDateTimeString As String 

ParseExact(sDateTimeString, "dd-mmmm", System.Globalization.CultureInfo.InvariantCulture) 

System.DateTime.TryParse

Dim sDateTimeString As String 
Dim objResult As System.DateTime 

System.DateTime.TryParse(sDateTimeString, result) 

This doesn't change the value of "result" if the date is in UK format "dd/mm/yyyy"

System.DateTime.TryParseExact

This converts a string representation to a DateTime object. The format of the string representation must match the specified format
Returns True or False based on whether the conversion is successful

Dim sDateTimeString As String 
Dim supportedformats() As String 
Dim objDateTime As System.DateTime 

supportedformats = New String() {"yyyy-MM-dd", "MM/dd/yyyy"} 

System.DateTime.TryParseExact(sDateTimeString, _ 
                                 supportedformats, _ 
                                 System.Globalization.CultureInfo.CurrentCulture, _ 
                                 System.Globalization.DateTimeStyles.None, _ 
                                 objDateTime) 

System.DateTimeOffset

This is a structure that represents a point in time expressed as a date and time of day, relative to UTC.

Gets a DateTimeOffset object that is set to the current date and time expressed in the UTC (Coordinated Universal Time) format whose offset is zero.

System.DateTimeOffset oDateTimeOffset; 
oDateTimeOffset = System.DateTimeOffset.UtcNow; 
System.Diagnostics.Debug.Print(oDateTimeOffset.ToString("T")); 
// 8:19:43 PM 

Properties

Methods