Question

I am trying to created nested dictionary variable like the below, But I get compile error stating that it needs “}” at line where I am adding items (line #2) to my nested dictionary.

What Am I missing here? Thanks.

Dim myNestedDictionary As Dictionary(Of String, Dictionary(Of String, Integer)) = New Dictionary(Of String, Dictionary(Of String, Integer))()


myNestedDictionary.Add("A", New Dictionary("A", 4)())

Answer 1

In VS 2008 and .net 3.5 you cannot declare and initialize a Dictionary in one line, so you have to do:

 Dim myNestedDictionary As New Dictionary(Of String, Dictionary(Of String, Integer))()
 Dim lTempDict As New Dictionary(Of String, Integer)
 lTempDict.Add("A", 4)
 myNestedDictionary.Add("A", lTempDict)

To retrieve the an item use the following:

Dim lDictionaryForA As Dictionary(Of String, Integer) = myNestedDictionary.Item("A")
Dim lValueForA As Integer = lDictionaryForA.Item("A")

The value in lValueForA should be 4.