Convert Dictionary(Of String, Object) to Dictionary(Of String, String)

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When I try to pass a Dictionary(Of String, Object) to a function parameter that wants a Dictionary(Of String, String) I get the following error:

Unable to cast object of type 'System.Collections.Generic.Dictionary'2[System.String,System.Object]' to type 'System.Collections.Generic.Dictionary'2[System.String,System.String]'.

All of the Object values in the dictionary are strings but the dictionary was declared as String/Object. I would have thought that the system would be able to convert this but since it isn't I need to do it myself.

I looked at the .ToDictionary() prototype method but all of the examples show a list being converted to a dictionary.

I found this question which has an accepted answer for what I want but it's written in C# and I can't figure out the conversion to VB.Net.

Edit 1

Offending code. Obviously boiled down or else I would just simply declare dict1 as string/string in my actual code. 

Dim dict1 As New Dictionary(Of String, Object) From {{"key1","value1"}}

SomeFunctionThatExpectsParamToBeDictOfStringString(dict1)

Edit 2

I tried:

SomeFunctionThatExpectsParamToBeDictOfStringString(dict1.ToDictionary(Function(k) k.Key, Function(v) v.Value.ToString()))

but got:

System.MissingMemberException: Public member 'ToDictionary' on type 'Dictionary(Of String,Object)' not found.

vb.net
1 Answers

This could be the VB.NET version of the C# code you have linked

Dim dic1 As Dictionary(Of String, Object) = New Dictionary(Of String, Object) 
dic1.Add("A", "B")

Dim dic2 As Dictionary(Of String, String) = dic1.ToDictionary(Function(k) k.Key, 
                                                              Function(v) v.Value.ToString())
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