1
我有一個問題，我認爲我已經正確地設置了事情，但結果總是零。如何使用同一模型中的兩個下拉菜單實例？
這裏的三種型號：
public class FamilyMember
{
[Key]
public int id { get; set; }
[Required]
[Display(Name = "First Name")]
public string firstName { get; set; }
[Required]
[Display(Name = "Surname")]
public string surname { get; set; }
[Required]
[Display(Name = "Date of Birth")]
public DateTime dob { get; set; }
public virtual FamilyRelationship FamilyRelationship { get; set; }
[Display(Name = "Full Name")]
public string fullName
{
get
{
return string.Format("{0} {1}", firstName, surname);
}
}
}
public class RelationshipType
{
[Key]
public int id { get; set; }
[Required]
[Display(Name="Relationship Type")]
public string relationshipType { get; set; }
public virtual FamilyRelationship FamilyRelationship { get; set; }
}
public class FamilyRelationship
{
[Key]
public int id { get; set; }
[ForeignKey("FamilyMembers")]
[Display(Name = "First Family Member")]
public int familyMemberPrimary { get; set; }
[ForeignKey("FamilyMembers")]
[Display(Name = "Second Family Member")]
public int familyMemberSecondary { get; set; }
[Display(Name = "Relationship Type")]
public int relationshipType { get; set; }
public virtual ICollection<FamilyMember> FamilyMembers { get; set; }
public virtual ICollection<RelationshipType> RelationshipTypes { get; set; }
}
所以，我已經成功地將數據FamilyMember和RelationshipType和CRUD工作完美。
該問題發現於創建控制器/查看FamilyRelationship。該下拉菜單完美工作，並在兩個相關菜單中顯示家庭成員，並且該關係還顯示在relationType下拉菜單中。但是，當我點擊創建所有值設置爲空。
創建控制器：
// GET: FamilyRelationships/Create
public ActionResult Create()
{
ViewBag.familyMember = new SelectList(db.FamilyMembers, "id", "fullName");
ViewBag.relationship = new SelectList(db.RelationshipTypes, "id", "relationshipType");
return View();
}
// POST: FamilyRelationships/Create
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "id,familyMemberPrimary,familyMemberSecondary,relationshipType")] FamilyRelationship familyRelationship)
{
if (ModelState.IsValid)
{
db.FamilyRelationships.Add(familyRelationship);
db.SaveChanges();
return RedirectToAction("Index");
}
return View(familyRelationship);
}
創建視圖：
@model FamilyTree.Models.FamilyRelationship
@{
ViewBag.Title = "Create";
}
<h2>Create</h2>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<h4>FamilyRelationship</h4>
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
@Html.LabelFor(model => model.familyMemberPrimary, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@*@Html.EditorFor(model => model.familyMemberPrimary, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.familyMemberPrimary, "", new { @class = "text-danger" })*@
@Html.DropDownList("familyMember", null, htmlAttributes: new { @class = "form-control" })
@Html.ValidationMessageFor(model => model.familyMemberPrimary, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.familyMemberSecondary, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownList("familyMember", null, htmlAttributes: new { @class = "form-control" })
@Html.ValidationMessageFor(model => model.familyMemberPrimary, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.relationshipType, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.DropDownList("relationship", null, htmlAttributes: new { @class = "form-control" })
@Html.ValidationMessageFor(model => model.relationshipType, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
請讓我知道我要去哪裏錯了，如果可能的話提供了一個例子，使這項工作。
太棒了。非常感謝您爲此提供的幫助。 –