Create list of keys with multiple values within in single key and duplicate entry of the keys

Question

I am new to vb.net. I want to create a key value pair or an array which ever is possible from a dynamic loop. The key name can have multiple entries I want output in following manner. I tried with dictionary but it do not allow duplicate keys.

In previous solutions which are in C#, I cannot find solution for my case since I want to get multiple values with the key like KeyName:{value1, value2, value3}. These three values must be within the KeyName not like KeyName: value1, KeyName: value2. I want to treat it like keyvalue pair.

Name1:{12, 12, 15}
Name1:{13, 12, 18}
Name2:{12, 11, 10}
Name3:{1, 2, 4}
Name4:{1, 2, 4}
Name1:{1, 2, 4}

Later on I need to print the keys with same name by grouping with the same key

Possible duplicate of Duplicate keys in .NET dictionaries?

muffi
– muffi

2018-02-08 05:56:08 +00:00
Commented Feb 8, 2018 at 5:56 — muffi
– muffi, Commented Feb 8, 2018 at 5:56

Slai · Accepted Answer · 2018-02-08 06:27:17Z

5

Alternative to a custom collection could be a List of KeyValuePairs :

Dim list = New List(Of KeyValuePair(Of String, Integer()))

list.Add(New KeyValuePair(Of String, Integer())("Name1", {1,2,3}))
list.Add(New KeyValuePair(Of String, Integer())("Name1", {1,2,3}))

For Each pair In list
    debug.print(pair.Key & ": " & String.Join(",", pair.Value))
Next

or Tuples :

Dim list = New List(Of Tuple(Of String, Integer()))

list.Add(Tuple.Create("Name1", {1,2,3}))
list.Add(Tuple.Create("Name1", {1,2,3}))

For Each pair In list
    Debug.Print(pair.Item1 & ": " & String.Join(",", pair.Item2))
Next

answered Feb 8, 2018 at 6:27

Slai

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2 Comments

muffi Over a year ago

Tuple is nice for this... +1

ritesh khadka Over a year ago

I think I need to split comma (,) later on to get those individual values. I had thought of this method to make it keyvalue pair. I was looking if there was any method rather than this. Let me try with this solution..

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