problem with dropdownlist

<div class="table-responsive">
            <table id="UserDetails" class="table table-striped table-bordered table-hover">
            <thead>
                <tr>
                    <th style="width:10%;"></th>
               
                    <th>Contact Number</th>
                    <th>Email</th>
                    
                    
                </tr>
            </thead>
            <tbody>
                @foreach (configuration_utility.Models.User user in Model)     
                {                 
                    <tr>
                        <td>
                            <div class="visible-md visible-lg hidden-sm hidden-xs action-buttons">
                                <a class="orange" href="@Url.Action(" add=", " user=")" data-rel="tooltip" title="Add user">
                                    class="icon-plus-sign bigger-130" href="@Url.Action(" data-rel="tooltip" title="Edit user">
                                </a>
                               @* <a class="red" önclick=" DeleteConfirm();" data-rel="tooltip" title="Delete User">*@
                                     <a class="red" href="@Url.Action(" deleteuser=", " user=", new { username = user.UserName })" önclick="return DeleteConfirm();" data-rel="tooltip" title="Delete user">
                                    ^__i class="icon-trash bigger-130">
                                </a>
                            </a></div>
                           
                       @* </td>*@
                      
                        <td>@user.Contact</td>
                        <td>@user.Email </td>
                       
                      
                    </tr>
                }
            </tbody>
        </table>
    </div>"