如何在mvc中绑定下拉值

Question

我无法绑定下拉值。也许我在我的代码中遗漏了一些东西。在这里我附上我的视图代码。

<tr>
    <td>
        <div class="form-group" style="margin-bottom:0px;">                                                  
            @Html.DropDownList("ProofId", ViewBag.Idproofs as SelectList, new { @class = "form-control", id = "ProofType2", name = "ProofType2" })
        </div>
    </td>
    <td>
        <div class="form-group" style="margin-bottom:0px;">
            @Html.TextBoxFor(x => x.EvidenceData[1].ProofNumber, new { @class = "form-control", id = "IdNumber2", name = "IdNumber2" })
        </div>
    </td>
    <td>
        <div class="form-group" style="margin-bottom:0px;">
            @Html.TextBoxFor(x => x.EvidenceData[1].ProofImage, new { @class = "form-control", id = "ProofPic2", type = "file", name = "ProofPic2" })
            <a href="~/images/ProofPics/@Model.EvidenceData[1].ProofImage" download title="Download Image" style="text-decoration:underline;"><i class="fa fa-download" aria-hidden="true"></i> Download Image</a>
        </div>
    </td>
</tr>

这是我的控制器代码：

public ActionResult EditProfile(string country)
{
    if (!User.Identity.IsAuthenticated)
        return new RedirectResult(Utility.Config("RedirectPath"));
    var idprooflist = AccountManager.LoadProoftypes(country ?? "United States");
    ViewBag.Idproofs = new SelectList(idprooflist, "ProofId", "ProofName");
    UserRegistration UserProfileData = ProviderManagerBLL.GetProviderDetails(Convert.ToInt32(Session["UserID"].ToString()));
    return View(UserProfileData);
}

Answer 1

以下内容应该适合您：

<div class="form-group" style="margin-bottom:0px;">                                                  
     @Html.DropDownList("ProofId", (SelectList)ViewBag.Idproofs, new { @class = "form-control", id = "ProofType2", name = "ProofType2" })
</div>

您正在使用ViewBag 将您的值传递给View，您所要做的就是参考您想要的内容。以前做的都行不通