Vb.net array (length, value assignment)

The following three examples of vb.net Array Operations mainly refer to the data elements, data length, and data change values. The code of the three instances is as follows:

Increase Data Length
 

Imports system

Public class mainclass
Shared sub main ()
'Clare an array
Dim strfriends (4) as string

'Populate the array
Strfriends (0) = "r"
Strfriends (1) = "B"
Strfriends (2) = "s"
Strfriends (3) = "s"
Strfriends (4) = "k"

Redim preserve strfriends (6)
Strfriends (5) = "m"
Strfriends (6) = "j"

For each strname as string in strfriends
System. console. writeline (strname)
Next

End sub
End class

 
Specify a value for the data element again

Imports system

Public class mainclass

Shared sub main (byval args as string ())
Dim friends () as string = {"a", "B", "c", "d", "e "}

'Make friends bigger!
Redim friends (6)
Friends (5) = "f"
Friends (6) = "g"

Addfriendstolist (friends)
End sub

Shared sub addfriendstolist (byval friends () as string)
Dim friendname as string

For each friendname in friends
Console. writeline ("[" & friendname & "]")
Next
End sub

End class

Change Data Length

Imports system

Public class samplesarray
Public shared sub main ()
Dim myarr as string () = {"the", "quick", "brown", "fox", "jumps tutorial", "over", "", "lazy", "dog "}

Printindexandvalues (myarr)

Array. resize (myarr, myarr. length + 5)

Printindexandvalues (myarr)

Array. resize (myarr, 4)

Printindexandvalues (myarr)

End sub 'main

Public shared sub printindexandvalues (myarr () as string)
Dim I as integer
For I = 0 to myarr. length-1
Console. writeline ("[{0}]: {1}", I, myarr (I ))
Next I
End sub

End class