C# – Copy array to collection

// One Array containing securities.
string[] securityArray = new string[5] { “Bond”, “Equity”, “Cash”, “IRS”, “PAS” };
// One Collection containing securities.
Collection<string> securityCollection = new Collection<string>();
securityCollection.Add(“Loan”);
securityCollection.Add(“Options”);
// List to help then adding.
List<string> helperList = new List<string>();
helperList.AddRange(securityCollection);
helperList.AddRange(securityArray);
// Updated list having collection items and array items added to it.
securityCollection = new Collection<string>(helperList);