Null date net

Posted Oct pm Member Null Value pass in datetime field C. Posted Jul am vickey. Posted 5-Sep pm Anil Honey Anil Honey 6-Sep am. We can't assign null value to datetime. I've made some changes to your code so that it can correctly work. Posted 9-Jun pm future Add your solution here. OK Paste as. Treat my content as plain text, not as HTML. Existing Members Sign in to your account. This email is in use. Do you need your password?

Submit your solution! When answering a question please: Read the question carefully. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem.

Insults are not welcome. Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question. Let's work to help developers, not make them feel stupid.

Related Questions. Assigning null value to datetime object. How do I assign values to label dynamically in C. How to assign null value to class object of type datetime. I retrieve a date value from the database using a select query. If the query returns results i assign the result to a variable called maxDate, which i declared as Date. I tried to do it with several ways, but none of them is working. This situation is precisely why the Nullable generic type was introduced in.

NET 2. Since value types cannot be nulled, the Nullable structure has the option of either having a value or not, similar in concept to a reference variable.

Here's an example:. I usually just assign "DbNull. If you don't specify "DbNull. My VB. Net is a bit rusty, but the following will probably look familiar to you or give you some idea of where to go. I believe assigning DBNull. Value will provide expected result only when you assign it to the parameter, not to the variable.

You could set variable to null in this case, but as I know it will lead to the situation when date-type variable will contain time part, but not a date one. The content you requested has been removed.

MinValue as well — Jeff LaFay. Value; to read from it, and if MyNullableDate. HasValue to check if it is null — satibel. If you're using. NET 2. Mark Ingram Mark Ingram You can use nullable types even in earlier versions of. NET, no need for 3.

It came in. NET in 3. Nullable types are available in. Net 2. C has had the shorthand? Only VB. Net didn't have the shorthand? MinValue; — Joel Coehoorn. I would use dt. GetValueOrDefault -- it's the most efficient option. Iman Iman This helped me discover passing just null doesn't work. It needs to be DateTime? Following way works as well myClass. Now : DateTime? Iman Aleksei Aleksei 1, 9 9 silver badges 13 13 bronze badges. David Mohundro David Mohundro It is worth pointing out that, while a DateTime variable cannot be null , it still can be compared to null without a compiler error: DateTime date; You can use a nullable class.

Aaron Smith Aaron Smith 3, 4 4 gold badges 27 27 silver badges 25 25 bronze badges. It's probably worth noting this will give you different behavior than instantiating a non-nullable DateTime. As previously mentioned, new DateTime will effectively give you DateTime.

Min whereas new DateTime? You can use a nullable DateTime for this. Patrik Svensson Patrik Svensson Patrick Desjardins Patrick Desjardins k 82 82 gold badges silver badges bronze badges.

I really do not get your comment. Yeah I know when the DateTime is so far aways of reality is like if it was null It is convenient, but I view DateTime. MinValue as a value, not a special case condition. It can only lead to problems down the line. I think you miss something about my answer, Spoulson wrote something and I was answering. About public members, well it's not the same and you know it. Empty or null. You can do both, not because String.

Empty is better that null is wrong. What ever. I'm with Daok on this. It might not be the "by the book" approach but it's better than getting a NullReferenceException or dealing with the cumbersome Nullable type. Besides, how many applications are out there that actually need to reference the date January 1, 1 A.