Help with Dictionary/Lists & Print()

[several]

Hello I'm pretty new still to Ninjascript and C#. I have a couple of questions regarding the use of Dictionaries. I made a Dictionary to store Bar Numbers, each Key has a List as a Value;

Dictionary<int, List<int>> BarList = new Dictionary<int, List<int>>();

After creating a key. Each key is later updated like this:

BarList[Counter] = new List<int>{Signal1, Signal2, Signal3, Signal4};

Question1: I could not get AddOrUpdate to work at all with Dictionaries, so every time I want to store a value I have to create a new List. Is AddOrUpdate not supported?

========

Question2: I'm Printing the output like this:

foreach (KeyValuePair <int, List<int>> Entry in BarList)
{
Print (string.Format(@"Key: {0}", Entry.Key));

foreach (var item in Entry.Value)
{
Print (string.Format(@"Bar Number: {0}", item));
}
}

This Outputs this:

Key: 129
Bar Number: 3174
Bar Number: 3175
Bar Number: 3176
Bar Number: 3177

How would I go about Combing the Print outputs into 1 Line? like so:

Key 129: Bar numbers: 3174, 3175, 3176, 3177

[NinjaTrader_Jesse]

Hello several,

With a List inside a dictionary you would have to create a new list every time you add a new item to the dictionary, that list needs to be a valid object so it can later be accessed. Once you add the list you can access it using the key .

BarList[Counter][0] // first element

To update the list you would have to use the lists methods by accessing it in the same way

BarList[Counter].Add(someItem);

To make the prints appear in 1 line you would need to make a string variable outside the loop and then append each string to the variable and print after the loop completes.

string myString = "";
foreach (KeyValuePair <int, List<int>> Entry in BarList)
{
Print (string.Format(@"Key: {0}", Entry.Key));

foreach (var item in Entry.Value)
{

myString += string.Format(@"Bar Number: {0}", item) + " ";
}
}​​
Print (myString);

[several]

Thanks for answer. I meant actually each key on it's own line with it's associated values, but I think maybe can work out how to do from what you wrote.