Develop Reference

How can I send my selectlist value via asp-... tags?

I wrote this code:
#foreach (var item in vm)
{
<tr>
<td>
<img src="#Html.DisplayFor(modelItem => item.Image)" style="width:150px" />
</td>
<td>
#Html.DisplayFor(modelItem => item.BrandName)
</td>
<td>
#Html.DisplayFor(modelItem => item.Name)
</td>
<td>
#Html.DisplayFor(modelItem => item.Description)
</td>
<td>
<select asp-for="Size">
#foreach (var i in ViewBag.columnNames){
<option value="#i.ToString()">#i</option>
}
</select>
</td>
<td>
#Html.DisplayFor(modelItem => item.Price)
</td>
<td>
#Html.DisplayFor(modelItem => item.ProductType.Description)
</td>
<td>
<a asp-action="AddToCart" asp-route-id="#item.Id">Buy</a>
</td>
</tr>
}
This is only part for sure, but I have an question about sending my selected value from "select" to AddToCart method of HomeController. How can I do it with asp-route-size or asp-for tags? Or is there any other way to do it?

You can build your select items in your controller, here's a bit of code I use to create a warehouse selection pulldown:
public List<SelectListItem> WarehouseFilterSelectItems { get; set; }
[BindProperty(SupportsGet = true)]
public string WarehouseFilter { get; set; }
WarehouseFilterSelectItems = _context.Warehouse
.Select(a => new SelectListItem
{
Value = a.ID.ToString(),
Text = a.WarehouseName
}).ToList();
Then in the .cshtml:
Warehouse Selection: <select asp-for="WarehouseFilter"
asp-items="#Model.WarehouseFilterSelectItems"
onchange="ProcessForm('filter_results', 'Inventory/jqindex/'); this.blur();">
<option value="0">ALL</option>
</select>
You won't need the 'onchange' event handler if you don't use javascript to post/return the data.

Filter data in other page in ASP.NET MVC

I have one table which is for contracts , And I have link beside each contract , when I click to the link they transfer to other page which is contract month but i want to display the data only for that contract which I click not all data.
Contact View :
#using (Html.BeginForm())
{
#Html.ActionLink("Create", "Create")
<table class="table table-bordered f" cellspacing="0">
<thead>
<tr>
</tr>
</thead>
#foreach (var item in Model)
{
<tbody>
<tr>
<td>
#Html.DisplayFor(modelItem => item.Contract_Num)
</td>
<td>
#Html.DisplayFor(modelItem => item.Contract_Start)
</td>
<td>
#Html.DisplayFor(modelItem => item.Contract_End)
</td>
<td>
#Html.DisplayFor(modelItem => item.Status)
</td>
<td>
#Html.DisplayFor(modelItem => item.typeOfRent.TypeOfRent_Name)
</td>
<td>
#Html.DisplayFor(modelItem => item.AmountOfRent)
</td>
<td>
#Html.DisplayFor(modelItem => item.Total)
</td>
<td>
#Html.DisplayFor(modelItem => item.customers.Customer_Name)
</td>
<td>
#Html.DisplayFor(modelItem => item.sections.Section_Name)
</td>
<td>
#Html.ActionLink("Contract Month", "Index", "ContractMonth")
</td>
</tbody>
}
</table>
contract month view :
foreach (var item in Model)
{
<tr>
<td>
#Html.DisplayFor(modelItem => item.contracts.Contract_Num)
</td>
<td>
#Html.DisplayFor(modelItem => item.Monthe)
</td>
<td>
#Html.DisplayFor(modelItem => item.contracts.AmountOfRent)
</td>
<td>
#Html.DisplayFor(modelItem => item.Receipt)
</td>
<td>
#{
var Balance = item.contracts.AmountOfRent - item.Receipt;
}
#Balance
</td>
Contract month controller:
public ActionResult Index()
{
var ContractMonth =_context.ContractMonth.Include(s => s.contracts).ToList();
return View(ContractMonth);
}

First of all change your Index action method inside ContractMonthController to get specific records with respect to ContractId
public ActionResult Index(int id)
{
var contractMonth = _context.ContractMonth.Where(c => c.ContractsId == id).Include(s => s.contracts).ToList();
return View(contractMonth);
}
And then change your action to accept id as query string parameter,
<td>
#Html.ActionLink("Contract Month", "Index", "ContractMonth", new { id = item.Contracts_Id }, null)
</td>

You can add the primary key (e.g. Id) of each contract to the url of each link as a query string. Then when getting the contract month data you can use the pk parameter to filter the data, for example (in the contract month controller):
public ActionResult Index(int contractId)
{
var ContractMonth =_context.ContractMonth.Where(c => c.ContractId == contractId).Include(s => s.contracts).ToList();
return View(ContractMonth);
}

.NET Using Another Unrelated Model In Razor View

Little context:
I have a link model which has a foreign Key ID to the identifier model and client model.
The client model and identifier model have the link model as a virtual Icollection.
Both the Client model and the identifier model have a foreign Key ID to another model MJTopics.
I'm using EF6 to create controllers with views and on the details view of the Client controller I can pull information from the links icollection into the view however I want to pull in identifiers which share the same MJTopicsID as the Client as shown below:
Use of the Links Icollection in Client Details:
<h3>Links Built</h3>
<table class="table">
<tr>
<th>Domain</th>
<th>Page Containing Link</th>
<th>Anchor Text</th>
<th>Date</th>
<th>Action</th>
</tr>
#foreach (var item in Model.Links)
{
<tr>
<td>
#Html.DisplayFor(modelItem => item.Identifier.domain)
</td>
<td>
#Html.DisplayFor(modelItem => item.Obdomain)
</td>
<td>
#Html.DisplayFor(modelItem => item.Anchor)
</td>
<td>
#Html.DisplayFor(modelItem => item.BuildDate)
</td>
<td>
#Html.ActionLink("Edit", "Edit", "Status", new { id=item.LinkID }) |
#Html.ActionLink("Domain", "Details", "Status", new { id=item.LinkID }) |
#Html.ActionLink("Delete", "Delete", "Status", new { id=item.LinkID })
</td>
</tr>
}
</table>
Possible related domains (I set a viewbag variable for the MJTopics ID of the client):
<h3>Possible Related Domains</h3>
<table class="table">
<tr>
<th>Domain</th>
<th>Status</th>
<th>Date</th>
<th>Action</th>
</tr>
#foreach (var item in Model.Identifier.Where(p=>p.MJTopics.ID == ViewBag.MjTopicsID))
{
<tr>
<td>
#Html.DisplayFor(modelItem => item.Identifier.domain)
</td>
<td>
#Html.DisplayFor(modelItem => item.status)
</td>
<td>
#Html.DisplayFor(modelItem => item.Last)
</td>
<td>
#Html.ActionLink("Go Live", "Live", "Status", new { id=item.StatusID }) |
#Html.ActionLink("Edit", "Edit", "Status", new { id=item.StatusID }) |
#Html.ActionLink("Domain", "Details", "Status", new { id=item.StatusID }) |
#Html.ActionLink("Delete", "Delete", "Status", new { id=item.StatusID })
</td>
</tr>
}
</table>
How would I go about doing this? I tried specifying another model in parenthesis but obviously it only allows one model per view, the only other way I have read about is partial views but don't know anything about these as of yet. Is there another simple way?

This was achieved using a ViewModel!

How to made item.Value with DisplayFor() ?

I'm using default schema of Create View and in my model i've got a field that's a DateTime.
Now i'm doing that, cause if i use the #Html.DisplayFor(modelItem => item.BirthDate) i see a string formatted in this way 13/02/1989 00:00:00 instead of this 16/02/1989
First of All: How to make all with DisplayFor statement? And... How it Works with datatype, it's a good practice?
Next: I wonder i have some homework to do, some suggestion?
#foreach (var item in Model)
{
<tr class="odd gradeX">
<td>
<input name="UserIDs" type="checkbox" class="checkboxes" value=#item.Id />
</td>
<td>
#Html.DisplayFor(modelItem => item.FirstName) #Html.DisplayFor(modelItem => item.LastName)
</td>
<td>
#Html.DisplayFor(modelItem => item.Email)
</td>
<td>
#Html.DisplayFor(modelItem => item.Phone)
</td>
<td>
#Html.DisplayFor(modelItem => item.Fax)
</td>
<td>
#item.BirthDate.ToShortDateString()
</td>
<td>
#Html.ActionLink("Details", "Details", new { Id = item.Id })
</td>
</tr>
}

Add this using statement to your model:
using System.ComponentModel.DataAnnotations;
Then add this attribute to your BirthDate field:
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy'-'MM'-'dd}")]
Edit as necessary.

How do i show a list from a model to another View in ASP.NET MVC 4

I have a list of Topic's. Each Topic have a list of Message. When i click on "Details" I want to open a new View that display a list of the Message's from the Topic.
I expect that I need to modify this line: (this is what I have so far)
#Html.ActionLink("Details", "Details", new { id=item.Id }, null)
The Message's are accessed by item.Message.
And the first line in the Detail View
#model IEnumerable<Models.TopicMessage>
This is my Topic View:
#model IEnumerable<Models.Topic>
<table>
<tr>
<th>
#Html.DisplayNameFor(model => model.Name)
</th>
<th></th>
</tr>
#foreach (var item in Model) {
<tr>
<td>
#Html.DisplayFor(modelItem => item.Name)
</td>
<td>
#Html.ActionLink("Details", "Details", new { id=item.Id }, null)
</td>
</tr>
}
</table>

There are a number of ways to do that. You can use the Action method to execute the controller action directly:
<tr>
<td>
#Html.DisplayFor(modelItem => item.Name)
</td>
<td>
#Html.Action("Details", "Details", new { id=item.Id })
</td>
</tr>
Or you can bypass the controller and render the view directly using this overload of DisplayFor:
<tr>
<td>
#Html.DisplayFor(modelItem => item.Name)
</td>
<td>
#Html.DisplayFor(modelItem => item.Messages, "MessagesDetail")
</td>
</tr>
Or if you define the template as the default DisplayTemplate, you can just do this:
<tr>
<td>
#Html.DisplayFor(modelItem => item.Name)
</td>
<td>
#Html.DisplayFor(modelItem => item.Messages)
</td>
</tr>

I fixed this by making a somethingViewModel that contained both the liste and the Id. That way i could contain the two information from two difference places in one new object I had access to in the View.