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mvc 5 update bind attribute in submit

I have an MVC 5 with Entity Framework application, database first and I am new to MVC. I have a file picker control that selects an image and in Action Result class of the create view, I encode the picture for storage in SQL. I have the encoding correct, but the data from the view is in the Bind attributes and I want to update the property from the Bind with encoded picture before I write it to the database. When I try to write to the database, the whole app simply churns until it runs out of memory. Obviously, I am missing a piece.
View: This is the div with the filepicker and the place where the Entity Framework wanted the coded pic to go.
<div class="col-md-10"><br/><br/>
#Html.TextBox("beforeEncode", "", new { type = "file" })<br />
#Html.LabelFor(model => model.fldPhoto, htmlAttributes: new { #class = "control-label col-md-2" })
#Html.EditorFor(model => model.fldPhoto, new { htmlAttributes = new { #class = "form-control"} })
#Html.ValidationMessageFor(model => model.fldPhoto, "", new { #class = "text-danger" })
</div>
</div>
Controller: This is the controller with the irrelevant parts deleted. I have a breakpoint set on the db.SaveChanges(); line for checking if there was an issue with the encoding, but even with it removed, it just churns
public ActionResult Create([Bind(Include = "fldPhotoID,fldPhoto,beforeEncode")] tblPhoto tblPhoto, String beforeEncode)
{
var fileupload = beforeEncode;
try
{
if (ModelState.IsValid)
{
if (fileupload != null)
{
FileStream fs;
fs = new FileStream(beforeEncode, FileMode.Open, FileAccess.Read);
byte[] PicEncoded = new byte[fs.Length];
fs.Read(PicEncoded, 0, Convert.ToInt32(fs.Length));
fs.Close();
tblPhoto.fldPhoto = PicEncoded;
}
db.tblPhotoes.Add(tblPhoto);
db.SaveChanges();
return RedirectToAction("Index", "Home");
}

How to correctly recover date from SQL Server?

I created a simple CRUD using ASP.NET MVC and I can save my registers normally.
If I look in the Data Base my date was stored like that:
2017-06-01 00:01:23.750
But when I try to Edit the same register whith an async method created by MVC Scaffolding the date appears to bel null:
01/01/0001 00:00:00
Then (of course) I get an error:
The conversion of a datetime2 data type to a datetime data type
resulted in an out-of-range value.
Thats the async method:
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Edit([Bind(Include = "ArtigoId,Titulo,Texto,DataPublicacao,UltimaModificacao,UsuarioModificacao,DataCriacao,UsuarioCriacao")] Artigo artigo)
{
if (ModelState.IsValid)
{
db.Entry(artigo).State = EntityState.Modified;
await db.SaveChangesAsync();
return RedirectToAction("Index");
}
return View(artigo);
}
Why does it happen? How to correctly recover the date from data base?
EDIT:
I changed in Data Base for datetime2(0-7) but that made it accept the value 01/01/0001 00:00:00 and what I want is to know why this value appears instead of 2017-06-01 00:01:23.750.
All the others values in the data base is recovered normally, but not this date.

The problem occurred because I removed my field in the View and there is nothing to do with the date format in SQL Server.
I put the field back in the view as readyonly:
<div class="form-group">
#Html.LabelFor(model => model.DataCriacao, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(model => model.DataCriacao, new { htmlAttributes = new { #class = "form-control", #readonly = "readonly" } })
#Html.ValidationMessageFor(model => model.DataCriacao, "", new { #class = "text-danger" })
</div>
</div>
The search of the field in the DB is done in the GET method:
// GET: Artigos/Edit/5
public async Task<ActionResult> Edit(Guid? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
Artigo artigo = await db.Artigoes.FindAsync(id);
if (artigo == null)
{
return HttpNotFound();
}
return View(artigo);
}
The method I posted was POST after the submit of my button to save the changes and no searches were done on the database.

ASP.net use session data to add something in create view

I created this simple ASP.NET project. (Default template using MVC)
In there I generated models from my database using ADO.net
I also generated controller for my model. (The model generated functions for create, edit, delete...) I also got view for every function in the controller.
So what I am trying to do now is:
-I am in my create view. (that means I see my form for creating objects)
-I need to enter data for [title, content] but to post in database I also need an id (this id is a foreign key, not the id of the object i am creating)
I already have this id saved in my session. I can access the session data by doing:
var user = Session["user"] as Uporabniki; //returns session data
user.id //selects id from session
Now what I want is to use this id in the create form textbox.
As of now the rows for id in my view look like this (I have no idea why it's a dropdown list. When I open the site I see names of all users in database and I can select one. But this is not what I want. I want to see only one):
<div class="form-group">
#Html.LabelFor(model => model.id_avtorja, "id_avtorja", htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.DropDownList("id_avtorja", null, htmlAttributes: new { #class = "form-control" })
#Html.ValidationMessageFor(model => model.id_avtorja, "", new { #class = "text-danger" })
</div>
</div>
The create methods in controller look like this
// GET: Vprasanjas/Create
public ActionResult Create()
{
ViewBag.id_avtorja = new SelectList(db.Uporabniki, "id", "uporabniskoIme");
return View();
}
// POST: Vprasanjas/Create
// To protect from overposting attacks, please enable the specific properties you want to bind to, for
// more details see http://go.microsoft.com/fwlink/?LinkId=317598.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "id,naslov,vsebina,datum,id_avtorja")] Vprasanja vprasanja)
{
if (ModelState.IsValid)
{
db.Vprasanja.Add(vprasanja);
db.SaveChanges();
return RedirectToAction("Index");
}
ViewBag.id_avtorja = new SelectList(db.Uporabniki, "id", "uporabniskoIme", vprasanja.id_avtorja);
return View(vprasanja);
}
Why is it not working if I change the view to something like this:
<div class="form-group">
#Html.LabelFor(model => model.id_avtorja, "id_avtorja", htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#var user = Session["user"] as Uporabniki;
#Html.Raw(user.id)
#Html.ValidationMessageFor(model => model.id_avtorja, "", new { #class = "text-danger" })
</div>
</div>
And how can I fix this?

Try rewrite to
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "id,naslov,vsebina,datum,id_avtorja")] Vprasanja vprasanja)
{
if (ModelState.IsValid)
{
vprasanja.id = (Session["user"] as Uporabniki).id;
db.Vprasanja.Add(vprasanja);
db.SaveChanges();
return RedirectToAction("Index");
}
ViewBag.id_avtorja = new SelectList(db.Uporabniki, "id", "uporabniskoIme", vprasanja.id_avtorja);
return View(vprasanja);
}
Main idea - assign your id on post.

Please post some info on the error. But my guess is you aren't creating any input HTML element so there's nothing posting. You need something like <input type="hidden" id="id_avtorja" value="#user.id"> in the form.
Also, I'd advise against using data out of a session variable. That's older technology and very un-MVC in philosophy.

retrieve model properties values inside GET method in mvc

I have following GET method , that's a code to a create form
public ActionResult Add_Product(string Product_ID)
{
AddNewProduct sample = new AddNewProduct();
return View(sample);
}
this is the model class for that
public class AddNewProduct
{
public string Product_ID { get; set; }
...
}
this is that create form
#model project_name.Models.AddNewProduct
<h4>Add New Product</h4>
#using (Html.BeginForm())
{
#Html.AntiForgeryToken()
<div class="form-horizontal">
#Html.ValidationSummary(true, "", new { #class = "text-danger" }) <div class="form-group">
#Html.LabelFor(model => model.Product_ID, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.TextBoxFor(model => model.Product_ID, new { #class = "form-control" })
#Html.ValidationMessageFor(model => model.Product_ID, "", new { #class = "text-danger" })
</div>
</div>
.....
<div>
#Html.ActionLink("Back to AddNewProduct", "AddNewProduct","Home" , new {Product_ID = Model.Product_ID})
</div>
}
I can Insert a Product_ID using this view page .But Once I click this Back to AddNewProduct link and debug AddNewProduct I cannot see any value for string Product_ID
Why this model properties not bind well

You need to assign value. Assign value of Product_ID which you are sending from get method to Product_ID property of class
public ActionResult Add_Product(string Product_ID)
{
AddNewProduct sample = new AddNewProduct();
sample.Product_ID = Product_ID;
return View(sample);
}

To pass the value of the textbox to the Add_Product() GET method, you need to use javascript/jquery. Replace you #Html.ActionLink(..) with
Back to AddNewProduct
and add the following script
var baseUrl = '#Url.Action("Add_Product", "Home")';
$('#back').click(function() {
var id = $('#Product_ID').val();
location.href = baseUrl + '/' + id;
}}
Note: location.href = baseUrl + '/' + id; assumes your have defined a specific route with {controller}/{action}/{Product_ID}, otherwise it needs to be
location.href = baseUrl + '?Product_ID=' + id;
Alternatively, change the method parameter to string id so it uses the default route
Note also that you will probably want to change the method to
public ActionResult Add_Product(string Product_ID)
{
AddNewProduct sample = new AddNewProduct
{
Product_ID = Product_ID
};
return View(sample);
}
so that if you click the Back to AddNewProduct link, the view will display the previous value you entered.

The second parameter of the #Html.ActionLink is the actionName but you sent the model name (AddNewProduct). Change it to this:
#Html.ActionLink("Back to AddNewProduct", "Add_Product","Home" , new {Product_ID = Model.Product_ID})
Or use this overload (You need to send null also when using this ActionLink overload):
#Html.ActionLink("Back to AddNewProduct", "Add_Product","Home" , new {Product_ID = Model.Product_ID}, null)

double and decimal not working

I have to set a price either a double or decimal.
I get this error and I have tried all I know.
Model:
public double price { get; set; }
Controller create:
public ActionResult Create([Bind(Include = "ID,farmID,productID,price, URL")] ProductFarm productFarm) {
if (ModelState.IsValid) {
db.farmProducts.Add(productFarm);
db.SaveChanges();
return RedirectToAction("Index");
}
ViewBag.farmID = new SelectList(db.farms.OrderBy(x => x.farmName), "farmID", "farmName", productFarm.farmID);
ViewBag.productID = new SelectList(db.products.OrderBy(x => x.productName), "productID", "productName", productFarm.productID);
return View(productFarm);
}
Edit - added view code:
<div class="form-group">
#Html.LabelFor(model => model.price, htmlAttributes: new { #class = "control-label col-md-2" })
<div class="col-md-10">
#Html.EditorFor(model => model.price, new { htmlAttributes = new { #class = "form-control" } })
#Html.ValidationMessageFor(model => model.price, "", new { #class = "text-danger" })
</div>
</div>

This error is basically a locale issue. You have to set which locale you want to target to. By default the MVC scaffolding will default to your PC's culture.
You can set culture in your web.config
<system.web>
<globalization culture ="en-US" />
</system.web>
Since the issue is from the jquery validate plugin you can install jquery.validate.globalize
Install-Package jQuery.Validation.Globalize
Show's you how to use it https://johnnyreilly.github.io/jQuery.Validation.Unobtrusive.Native/AdvancedDemo/Globalize.html
Or,
You can extend your jquery.validate plugin yourself http://www.cedricascoop.be/blog/2011/10/22/mvc-3-problems-validating-a-decimal/
number: function (value, element) {
return this.optional(element) || /^-?(?:\d+|\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test(value); //dot separated
return this.optional(element) || /^-?(?:\d+|\d{1,3}(?:\.\d{3})+)(?:,\d+)?$/.test(value); //comma separated
}
above code is from jquery.validate.js around line 1050 you can see the validation.Don't be confused I added the second return. I switched the return statement around. One return validates for dot another for comma.