Question

我是MVC的新手。我想只在Account_Type = "D"填写Dropdownlist。这是我的 Edit.cshtml

<div class="form-group">
        @Html.LabelFor(model => model.Account_Code, "Account_Code", htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownList("Account_Code", null, htmlAttributes: new { @class = "form-control" })
            @Html.ValidationMessageFor(model => model.Account_Code, "", new { @class = "text-danger" })
        </div>
    </div>

这是我的编辑控制器

public ActionResult Edit(int? id)
{
    ViewBag.Account_Code = new SelectList(db.Chart_Of_Account, "Account_Code", "Account_Desc", student.Account_Code);
}

Answer 1

使用.Where()子句过滤数据

public ActionResult Edit(int? id)
{
  var accountCodes = db.Chart_Of_Account.Where(a => a.Account_Type == "D");
  ViewBag.AccountCodeList = new SelectList(accountCodes , "Account_Code", "Account_Desc");
}

注意我已经更改了ViewBag属性的名称，并删除了SelectList构造函数的第3个参数（绑定到属性时忽略了它）

您的观点应为

@Html.DropDownListFor(m => m.Account_Code, (SelectList)ViewBag.AccountCodeList)

MVC中的Dropdownlist，其中包含实体中的cluase

1 个答案: