Check null in vb.net 2003

How would I check for a null date, and replace it with "" in my app? Add a comment. Active Oldest Votes. James Johnson James Johnson Glad to be the one to put you over 10k I would DotNetCookie: You can have your one line if statement, and have it work, just delete delete one of the I's IIF is a flawed method from 1. I've updated my answer. I've been stuck in. Field Of DateTime? HasValue, sysdate. Chris Dunaway Chris Dunaway Adityo Adityo 81 1 1 silver badge 2 2 bronze badges. Sign up or log in Sign up using Google.

Sign up using Facebook. Asked 13 years ago. Active 3 years, 4 months ago. Viewed k times. I have this: If String. Peter Mortensen Dan Dan. What is the type of editTransactionRow? What is this "Null" value?

Add a comment. Active Oldest Votes. Value Then End If. Garry Shutler Garry Shutler Edit to show you if it's not a String: If editTransactionRow. Patrick Desjardins Patrick Desjardins k 82 82 gold badges silver badges bronze badges. Well, I can't check this: If String. If you are using a strongly-typed dataset then you should do this: If Not ediTransactionRow. Micah Micah k 81 81 gold badges silver badges bronze badges.

Are you sure that syntax above works? Why If Not ediTransactionRow. The variable is editTransactionRow. Do you mean If Not ediTransactionRow. Empty strings are used quite commonly in various programming scenarios to represent a blank text field. Empty strings are initialized like this:. A null string does not refer to an instance of a System.

String object and any attempt to call a method on a null string results in a NullReferenceException. In the above code we created a string Object and assigned Nothing and next we check the string is null or not. IsNullOrEmpty is a convenience method that enables you to simultaneously test whether a String is Nothing or its value is Empty. It is equivalent to the following code:. NullReferenceException indicates that you are trying to access member fields, or function types, on an object reference that points to null.

That means the reference to an Object which is not initialized. More about Home C VB.