Is it possible to create a hashtable "pre-populated" with values?
That is, something like:
dim myHash as new Hashtable() = {"key1", "value1", "key2", "value2" }
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3 Answers
First of all, Hashtable's are old now. Use a Dictionary(Of TKey, TValue) instead. As for your question, with Visual Studio 2010 you can use the new collection initializer syntax:
Dim myDict As New Dictionary(Of Integer, String) From {{1, "One"}, {2, "Two"}}
Since you're on .NET 2.0, you can't use that syntax (you can and should still use a generic Dictionary), and so your best bet is using a method to hide it:
Function CreateDictionary() As Dictionary(Of Integer, String)
Dim d As New Dictionary(Of Integer, String)
d.Add(1, "One")
d.Add(2, "Two")
Return d
End Function
Dim myDict As Dictionary(Of Integer, String) = CreateDictionary()
1 Comment
Joel Coehoorn
@chris - I updated your question to include that constraint. If you need a particular version of the framework, please include that information in the future. I'll update my answer as well, but it's gonna be similar to Jared's now.
The easiest way to accomplish this is to factor the code out into a function
Function CreateHashtable() As Hashtable
Dim table = new HashTable()
table.Add("key1", "value1")
table.Add("key2", "value2")
return table
End Function
Dim myHash As Hashtable = CreateHashtable()
Comments
Dim myHash As New Hashtable() From {
{"key1", "value1"}, {"key2", "value2"}
}
