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c# - How to add item to the beginning of List<T>?

I want to add a "Select One" option to a drop down list bound to a List<T>.

Once I query for the List<T>, how do I add my initial Item, not part of the data source, as the FIRST element in that List<T> ? I have:

// populate ti from data               
List<MyTypeItem> ti = MyTypeItem.GetTypeItems();    
//create initial entry    
MyTypeItem initialItem = new MyTypeItem();    
initialItem.TypeItem = "Select One";    
initialItem.TypeItemID = 0;
ti.Add(initialItem)  <!-- want this at the TOP!    
// then     
DropDownList1.DataSource = ti;
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Use the Insert method:

ti.Insert(0, initialItem);

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