How Can I Populate A Dynamically Created Tabitem With A Listview

Hi,
use the same way you did for creating TabItem. like following,

Dim myTabItem As New TabItem()
myTabItem.Header = "TabPage" & (tc_main.Items.Count + 1)
tc_main.Items.Add(myTabItem)

'Add ListView like following,
Dim myContainerGrid As New Grid()
Dim myListView As New ListView()
myListView.Items.Add("List Item 1")
myListView.Items.Add("List Item n")
myContainerGrid.Content = myListView
myTabItem.Content = myContainerGrid

Or, you can also use the index of created TabItem. When you are adding TabItem using tc_main.Items.Add(myTabItem) method, it returns an integer value, this value is the index of the added TabItem in the TabControl.
By using this index, you can get your dynamically created TabItem like,

Dim index As Integer = tc_main.Items.Add(myTabItem)
Dim AddedItem As TabItem = tc_main.Items(index) As TabItem

'Add ListView like following,
Dim myContainerGrid As New Grid()
Dim myListView As New ListView()
myListView.Items.Add("List Item 1")
myListView.Items.Add("List Item n")
myContainerGrid.Content = myListView
AddedItem.Content = myContainerGrid

Like this you can any controls.