ASP.NET Repeater bind List<string>
Just use <%# Container.DataItem.ToString() %>
If you are worried about null values you may want to refactor to this (.NET 6+)
<asp:Repeater ID="repeater" runat="server"> <ItemTemplate> <%# Container.DataItem?.ToString() ?? string.Empty%> </ItemTemplate></asp:Repeater>
Note if you are using less than .NET 6 you cannot use the null-conditional operator Container.DataItem?.ToString()
Set the ItemType to System.String
<asp:Repeater ItemType="System.String" runat="server"> <ItemTemplate> <%# Item %> </ItemTemplate></asp:Repeater>
rptSample.DataSource = from c in lstSample select new { NAME = c };
in the repeater you put
<%# Eval("NAME") %>