tkaragiris posted on November 29, 2010 14:25
Hash tables are a great way to store and retrieve lists of values that have different data types. You can retrieve items in the list by their given text key.
See examples below:
Function ShowHashTable() As String
' Create a new hash table
Dim htParams As New Hashtable
Dim strTemp As String
' Add some entries to the hash table, entries can be different data types
htParams.Add("Firstname", "Freddy")
htParams.Add("Surname", "Tester")
htParams.Add("Age", 40)
' Iterate through items and display the hashtable
strTemp = "<table>"
For Each deEntry As DictionaryEntry In htParams
strTemp &= "<tr><td>" & deEntry.Key & "</td><td>" & deEntry.Value & "</td></tr>"
Next
strTemp &= "</table>"
' Refer to individual items in the hash table like this:
strTemp &= "My name is: " & htParams("Firstname") & "<br />"
' Change items in the hash table like this:
htParams("Age") = 33
strTemp &= "My age is: " & htParams("Age")
Return strTemp
End Function