在DropDownList中选择Item会生成新表单

Question

我的下拉列表中有四个部门，我希望它类似，当我在下拉列表中选择所需项目时，它应该打开该部门的注册表单。

    <div class="form-group string department">
        <label class="control-label col-md-3>
          Select Department
        </label>
   <div class="col-md-4">
        @{
            List<SelectListItem> deplist = new List<SelectListItem>();
            deplist.Add(new SelectListItem { Value = "1", Text = "Department A" });
            deplist.Add(new SelectListItem { Value = "2", Text = "Department B" });
            deplist.Add(new SelectListItem { Value = "3", Text = "Department C" });
            deplist.Add(new SelectListItem { Value = "4", Text = "Department D" });
          }
           @Html.DropDownListFor(m => m.Department, deplist, "--Select Department -", new { @class = "form-control" })
    </div>

我的观点是这样的 DOP部门

<div class="panel-body">
    <div class="form-group string required patient_regno">
        <label class="control-label col-md-2">
        Regestration No
        </label>
    <div class="col-md-3">
         @Html.TextBoxFor(m => m.RegistrationNo, new { placeholder = "BX1234", @class = "string required form-control" })
         @Html.ValidationMessageFor(m => m.RegistrationNo, null, new { @class = "text-error" })
    </div>
    <div class="form-group string required patient_regdate">
    <label class="control-label col-sm-2">
     Date</label>
    <div class="col-md-3">
         @Html.TextBoxFor(m => m.RegistrationDate, new{@class="string required form-control", type="date"})
         @Html.ValidationMessageFor(m => m.RegistrationDate, null, new { @class = "text-error" })</div>
    </div>
    </div>

其他部门是DOT

<div class="panel-body">
        <div class="form-group string patient_onsetdate">
            <label class="control-label col-md-2">
            Onset Date
            </label>
        <div class="col-md-3">
             @Html.TextBoxFor(m => m.OnsetDate, new { @class = "string form-control", type = "date", size = "50" })
        </div>
        <div class="form-group patient_onset">
        <label class="control-label col-sm-2">
         Onset Place</label>
        <div class="col-md-3">
            @Html.TextBoxFor(m => m.OnsetAt, new { @class = "string form-control", placeholder = "Place", type = "text" })
        </div>
        </div>

我为不同的部门创建了视图，当我从DropDownList中选择一个项目时，如何在当前视图中将它们作为表单打开？