VB NET Empty String Array

Question

How can I create an empty one-dimensional string array

User · Answer

VB is 0-indexed in array declarations  so seomthing like Dim myArray 10  as String gives you 11 elements  It s a common mistake when translating from C languages   So  for an empty array  either of the following would work   Dim str -1  as String   -1   1   0  so this has 0 elements Dim str   as String   New String         implicit size  initialized to empty

User · Answer

A little verbose  but self documenting     Dim strEmpty   As String   Enumerable Empty Of String  ToArray

User · Answer

Dim array As String     Array Empty Of String

User · Answer

The array you created by Dim s 0  As String IS NOT EMPTY  In VB Net  the subscript you use in the array is index of the last element   VB Net by default starts indexing at 0  so you have an array that already has one element   You should instead try using System Collections Specialized StringCollection or  even better  System Collections Generic List Of String   They amount to pretty much the same thing as an array of string  except they re loads better for adding and removing items   And let s be honest   you ll rarely create an empty string array without wanting to add at least one element to it   If you really want an empty string array  declare it like this   Dim s As String     or  Dim t   As String

User · Answer

Not sure why you d want to  but the C  way would be  string   newArray   new string 0     I m guessing that VB won t be too dissimilar to this   If you re building an empty array so you can populate it with values later  you really should consider using   List lt string gt    and converting it to an array  if you really need it as an array  with   newListOfString ToArray

User · Answer

Something like   Dim myArray 9  as String   Would give you an array of 10 String references  each pointing to Nothing    If you re not sure of the size at declaration time  you can declare a String array like this   Dim myArray   as String   And then you can point it at a properly-sized array of Strings later   ReDim myArray 9  as String   ZombieSheep is right about using a List if you don t know the total size and you need to dynamically populate it  In VB NET that would be   Dim myList as New List Of String  myList Add  foo   myList Add  bar     And then to get an array from that List   myList ToArray      Mark  Thanks for the correction

User · Answer

Another way of doing this   Dim strings   As String        Testing that it is an empty string array   MessageBox Show  count      strings Count ToString    Will show a message box saying  count  0

User · Answer

You don t have to include String twice  and you don t have to use New   Either of the following will work     Dim strings   as String      Dim strings as String

User · Answer

try this Dim Arraystr   as String

User · Answer

Dim strEmpty -1  As String

[.net] VB.NET Empty String Array

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