How to typecast a DateTime variable in C#

DateTime is a built-in struct provided within the C# language. It is commonly used to store and perform operations related to date and time. It supports many date and time properties, e.g., year, month, day, hour, minute, second, millisecond, day of the week, time of the day, etc. You can read more about the DateTime struct here.

How to convert a DateTime object to a string variable

To convert a DateTime object to a string, we can use the ToString() method.

Code example

Let’s convert a DateTime object to a string using the ToString() method:

DateTime dateTimeObj = DateTime.Now;
Console.WriteLine(dateTimeObj);
Console.WriteLine(dateTimeObj.GetType());
string dateString = dateTimeObj.ToString(); 
Console.WriteLine(dateString);
Console.WriteLine(dateString.GetType());
string formattedString = dateTimeObj.ToString("yyyy-MM-dd"); 
Console.WriteLine(formattedString);

Explanation

In the code above:

  • Line 1: We use DateTime.Now to get the current time.
  • Line 2–3: We print the object along with its type.
  • Line 5: We convert the DateTime object to a string variable using the ToString() method.
  • Line 6–7: We print this string containing the date along with its type.
  • Line 9: We convert the DateTime object to a string variable in a specific format.
  • Line 10: We print the new string.

How to convert a string variable to a DateTime object

To convert a string variable to a DateTime object, we can use the Parse() and TryParse() method.

Code example

Let’s convert a string variable to a DateTime object using the Parse() method:

string dateString = "2023-04-15";
DateTime dateObject = DateTime.Parse(dateString);
Console.WriteLine(dateObject);
Console.WriteLine(dateObject.GetType());
string timeString = "12:34 PM";
DateTime timeObject = DateTime.Parse(timeString);
Console.WriteLine(timeObject);
string dateTimeString = "2023-04-15 12:34 PM";
DateTime dateTimeObject = DateTime.Parse(dateTimeString);
Console.WriteLine(dateTimeObject);

Explanation

In the code above:

  • Line 1: We initialize the string type object containing the date value "2023-04-15".
  • Line 2: We use the Parse() method to convert the string containing the date into the DateTime object.
  • Line 3–4: We print the date object along with its type.
  • Line 6: We initialize a string type object containing the time value "12:34 PM".
  • Line 7: We use the Parse() method to convert the string containing the time into the DateTime object.
  • Line 8: We print the time object.
  • Line 10: We initialize a string type object containing the date and time value "2023-04-15 12:34 PM".
  • Line 11: We use the Parse() method to convert the string into the DateTime object.
  • Line 8: We print the DateTime object.

Note: Parse() can raise error(s) on invalid input. You can handle the error(s) using the TryParse() method. Learn how to use Parse() and TryParse() methods here.

Free Resources

Copyright ©2026 Educative, Inc. All rights reserved