Visualize In Single Value - DropDownList How To Set DataSource

I have a DropDownList. I need visualize in it a SINGLE value (ListItem) the current Logged in User, like

<asp:ListItem>Joe</asp:ListItem>

Here my wrong code, if the UserName is "Joe", the DropDownList visualize for every single letter an ListItem: Example:

<asp:ListItem>J</asp:ListItem>
<asp:ListItem>o</asp:ListItem>
<asp:ListItem>e</asp:ListItem>

This is my code:

<asp:DropDownList ID="uxUserListSelector" runat="server"></asp:DropDownList>
MembershipUser myCurrentUser = Membership.GetUser();
myUserList.DataSource = myCurrentUser.UserName;
myUserList.DataBind();