我设计了样本发票enter image description here，我的课程就像那样
public partial class Invoice
{
public Invoice()
{
this.InvoiceDetails = new HashSet<InvoiceDetail>();
}
public int code { get; set; }
public Nullable<System.DateTime> inv_date { get; set; }
public Nullable<decimal> total { get; set; }
public Nullable<decimal> discount { get; set; }
public Nullable<decimal> net { get; set; }
public virtual ICollection<InvoiceDetail> InvoiceDetails { get; set; }
}
public partial class InvoiceDetails
{
public int id { get; set; }
public int code { get; set; }
public Nullable<int> itemId { get; set; }
public string itemName { get; set; }
public Nullable<decimal> price { get; set; }
public Nullable<int> request_quantity { get; set; }
public Nullable<decimal> total { get; set; }
public Nullable<int> vendorId { get; set; }
public virtual Invoice Invoice { get; set; }
public virtual Item Item { get; set; }
}
public partial class Item
{
public Item()
{
this.InvoiceDetails = new HashSet<InvoiceDetail>();
}
public int id { get; set; }
public string name { get; set; }
public Nullable<decimal> price { get; set; }
public Nullable<int> quantity { get; set; }
public Nullable<int> vendorId { get; set; }
public virtual ICollection<InvoiceDetail> InvoiceDetails { get; set; }
public virtual Vendor Vendor { get; set; }
}
public partial class Vendor
{
public Vendor()
{
this.Items = new HashSet<Item>();
}
public int id { get; set; }
public string name { get; set; }
public virtual ICollection<Item> Items { get; set; }
}
最后，课程正在收集3个班级Invoice，InvoiceDetails和供应商
public class Collection_invoice
{
public Invoice Invoice { get; set; }
public InvoiceDetail InvoiceDetail { get; set; }
public IEnumerable<Vendor> Vendor { get; set; }
}
我在视图模型中使用此类来创建新发票并且一切都很好，但如果发票有两个或更多项，那么只保存最终项目就像那样添加
Only last item will be insert in database ... how to solve that ??
我的问题是在SQL服务器中保存发票内的所有项目所需的更改...请帮助..
这是创建新发票的视图模型（最后一张图片）
@model PurchasesInvoice.Models.Collection_invoice
@using (Html.BeginForm())
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="form-horizontal">
<div class="col-md-4">
<div class="form-group">
@Html.LabelFor(m => m.Invoice.code)
@Html.TextBoxFor(m => m.Invoice.code, new { @readonly = "readonly", @class = "form-control" })
</div>
</div>
<div class="col-md-4">
<div class="form-group">
@Html.LabelFor(m => m)
<br />
@Html.DropDownListFor(m=>m.Invoice.InvoiceDetails,
new SelectList(Model.Vendor, "id", "name"), "Select Vendor", new { @class = "dropdown-toggle btn btn-primary", @onchange = "Get_Items()", @required = "required" })
</div>
</div>
<div class="col-md-4">
<div class="form-group">
@Html.Label("Invoice Date")
<br />
@Html.EditorFor(m => m.Invoice.inv_date, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.Invoice.inv_date, " ", new { @class = "req" })
</div>
</div>
<table class="direction table table-bordered">
<thead>
<tr>
<th>
@Html.DisplayName("Item Id")
</th>
<th>
@Html.DisplayName("Item Name")
</th>
<th>
@Html.DisplayName("Price")
</th>
<th>
@Html.DisplayName("Quantity")
</th>
<th>
@Html.DisplayName("Request quantity")
</th>
<th>
@Html.DisplayName("Total")
</th>
<th>
@Html.DisplayName("Action")
</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<div class="col-lg-8">
<div class="form-group">
@Html.TextBoxFor(m => m.InvoiceDetail.itemId, new { @readonly = "readonly", @id = "item_Id", @class = "form-control" })
</div>
</div>
</td>
<td>
<div class="col-lg-4">
<div class="form-group">
@Html.DropDownList("itemId", new List<SelectListItem>{
new SelectListItem{Text ="-- Select Item --", Value=" "} },
"-- Select Item --", new { @class = "dropdown-toggle btn btn-primary", @required = "required", @onchange = "Get_dataItem()" })
</div>
</div>
</td>
<td>
<div class="col-lg-8">
<div class="form-group">
@Html.TextBoxFor(m => m.InvoiceDetail.price, new { @id = "price", @readonly = "readonly", @class = "form-control" })
</div>
</div>
</td>
<td>
<div class="col-lg-8">
<div class="form-group">
@Html.TextBox("quantity", " ", new { @id = "quantity", @class = "form-control", @readonly = "readonly" })
</div>
</div>
</td>
<td>
<div class="col-lg-8">
<div class="form-group">
@Html.TextBoxFor(m => m.InvoiceDetail.request_quantity, " ", new { @id = "request_quantity", @onchange = "calculateQuantity()", @class = "form-control" })
@Html.ValidationMessageFor(m => m.InvoiceDetail.request_quantity, " ", new { @class = "req" })
</div>
</div>
</td>
<td>
<div class="col-lg-8">
<div class="form-group">
@Html.TextBoxFor(m => m.InvoiceDetail.total, new { @id = "total", @readonly = "readonly", @class = "label-info form-control" })
</div>
</div>
</td>
<td>
<button id="btnAddItem" type="button" class="btn btn-primary">Add Item</button>
</td>
</tr>
</tbody>
</table>
<table id="table-items" class="direction table table-bordered table-condensed">
<thead>
<tr>
<th>
@Html.DisplayName("Item Id")
</th>
<th>
@Html.DisplayName("Item Name")
</th>
<th>
@Html.DisplayName("Price")
</th>
<th>
@Html.DisplayName("Quantity")
</th>
<th>
@Html.DisplayName("Total")
</th>
</thead>
<tbody>
<tr></tr>
</tbody>
</table>
<div class="col-md-3">
<div class="form-group">
@Html.LabelFor(m => m.Invoice.total)
@Html.TextBoxFor(m => m.Invoice.total, new { @readonly = "readonly", @class = "form-control" })
</div>
</div>
<div class="col-md-1">
<div class="form-group">
@Html.LabelFor(m => m.Invoice.discount)
<div class="form-horizontal">
<div class="form-group">
@Html.TextBoxFor(m => m.Invoice.discount, new { @onchange = "CalculateNetInvoice()", @class = "form-control" })<span>%</span>
</div>
</div>
@Html.ValidationMessageFor(m => m.Invoice.discount, "", new { @class = "req" })
</div>
</div>
<div class="col-md-3">
<div class="form-group">
@Html.LabelFor(m => m.Invoice.net)
@Html.TextBoxFor(m => m.Invoice.net, new { @readonly = "readonly", @class = "form-control" })
</div>
</div>
<div class="col-md-3">
<br />
<input class="btn btn-primary" type="submit" id="btnInsert" name="btnInsert" value="Save Invoice" />
</div>
</div>
</div>
</div>
</div>
[HttpPost]
public ActionResult Create(Collection_invoice coInvoice)
{
if (coInvoice.Invoice != null)
{
Invoice inv = new Invoice();
inv.inv_date = coInvoice.Invoice.inv_date;
inv.net = coInvoice.Invoice.net;
inv.total = coInvoice.Invoice.total;
inv.discount = coInvoice.Invoice.discount;
int code = inv.AddNewInvoice(inv);
coInvoice.InvoiceDetail.code = code;
coInvoice.InvoiceDetail.itemName = db.Items.SingleOrDefault(im => im.id == coInvoice.InvoiceDetail.itemId).name;
db.InvoiceDetails.Add(coInvoice.InvoiceDetail);
db.SaveChanges();
}
else
{
var VendorList = db.Vendors.ToList();
var invoice_detalis = new Models.Collection_invoice
{
Vendor = VendorList
};
return View("Create", invoice_detalis);
}
int? page = null;
return View("List", db.Invoices.ToList().ToPagedList(page ?? 1, 3));
}
答案 0 :(得分：0)
如果您使用invoiceDetails作为对象列表，则应覆盖要在数据库中插入的set函数