This example creates a simple 1-column repeater that displays a list of numbers, one per repeater item.
Markup:
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<%# Container.DataItem.ToString() %>
</ItemTemplate>
</Repeater>
Code behind:
protected void Page_Load(object sender, EventArgs e)
{
List<int> numbers = new List<int>{1, 2, 3, 4, 5};
Repeater1.DataSource = numbers;
Repeater1.DataBind();
}