How to check the key is exists in collection or not

Question

I want to check collection variable contains the key or not in visual basic 6.0 Below is the collection variable I am having

pcolFields As Collection

and I want to check whether it contains the field Event_Code. I am doing this as below but it not worked for me.

    If IsMissing(pcolFields("Event_Code")) = False Then
        'Do Something
    End If

Answer 1

We can check following code into vb.net code

If Collection.ContainsKey(KeyString) Then

'write code

End if

Collection is variable of Dictionary and KeyString is a key string which we need to find into collection