Determine if a generic param is a Nullable type

by

One way is:

If Nullable.GetUnderlyingType(GetType(TData)) <> Nothing

… at least, the C# is:

if (Nullable.GetUnderlyingType(typeof(TData)) != null)

That’s assuming you’re asking whether it’s a nullable value type. If you’re asking whether it’s a nullable value type or a class then the C# version would be:

if (default(TData) == null)

but I’m not sure whether a simple VB translation would work there, as “Nothing” is slightly different in VB.

More Related Contents:

  1. Performance of Arrays vs. Lists
  2. How to loop through all the properties of a class?
  3. Case insensitive string compare in LINQ-to-SQL
  4. Does XSLT have a Split() function?
  5. “Items collection must be empty before using ItemsSource.”
  6. Yield in VB.NET
  7. How to count the number of rows in excel with data?
  8. Update primary key value using entity framework
  9. VB.Net – Excel COM Object not getting released [duplicate]
  10. What is the difference between Dim v As String() and Dim v() As String?
  11. Can I set Option Explicit and Option Strict on a Project/Solution level?
  12. Controlling Application’s Volume: By Process-ID
  13. Can I host a Windows Form inside a control
  14. Is it necessary to add a @ in front of an SqlParameter name?
  15. Accessing imgUr thru OAuth (uploading to user account)
  16. How to perform a binary search on IList?
  17. Making DataGridView rows a certain color based on a column value
  18. Where are My.Settings saved in VB 2010 .NET?
  19. Equivalent of MoveNext in VB.NET
  20. How should I cast in VB.NET?
  21. Shuffling an array of strings in vb.net
  22. Get the name of Enum value
  23. variable/property changed event in vb.net
  24. Assigning a value to ComboBox Items
  25. vb.net Pass Textbox Between forms.
  26. Custom button captions in .NET messagebox?
  27. .NET — Textbox control – wait till user is done typing
  28. How to post a file via HTTP post in vb.net
  29. How to securely store a connection string in a WinForms application?
  30. VB.NET Excel Program Leaves EXCEL.EXE floating after completion

Leave a Comment