I am using MVC3 and Entity Framework.
In my project, I have a view and a controller. From my view I am importing 1000 records from excel to the database and that works fine.
My requirement is, while inserting large rows of data to the database I need to indicate
the status of the importing rows and the % of loading completed and need to add background process( thread)..
How to achieve this one? Need Help on this.
View Code:
#using (Html.BeginForm("FImport", "Import", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
//Here i'm Inserting 1000 of records using table
<input type="submit" value="Start Import" /></td>
}
Controller Code:
[HttpPost]
public ActionResult FImport(FormCollection collection)
{
}
How to do that?
Related
I am very new to MVC, let me try to explain my scenario in plain simple English:
I have an strongly typed mvc form/page (Product.cshtml) with a model, say ProductViewModel.
This page has got two search buttons, one to search and bring the items to be added to the Product and other to bring in the location, most probably partial views.
Now, what I want is that these search results work in ajax form without complete post back, and then the results of these searches (items and location) should be posted back using model binding to the form when user clicks on the submit button.
What could be the best way of achieving this functionality?
Immediate responses will be well appreciated.
I thought, its good to share the complete code for clarity:
I have one form(Service1.chtml) that has a partial view to display users(_TestUser a partial view:read only), then another partial view(_PlotServiceRequestData) that should have a field to search the plot and bring back the details lke its owner name and landuser etc.
Then when I click on submit button of the main form, I should be able to read all data(main form) + new data from _PlotServiceRequestData partial view and save all data to database.
I was trying one more option, that is, to use #Ajax.ActionLink on Service1.cshtml to call the _GetPlotDetails method and then store partial view data in TempData, so that it is available to the form when users clicks on "Submit" button of Service1.cshtml, is this a right approach?, if I use ajax.BeginForm inside partial view then the data is posted to the
Service1 controller method which is actually to save the form data and not to update the partialview and in this method even I am not getting model data of the partial view.
Sevice1.cshtml:
#model ViewModels.TestViewModel
#{
ViewBag.Title =
"Service1";
}
#
using (Html.BeginForm())
{
#Html.LabelFor(m => m.Title)
#Html.EditorFor(m => m.Title)
#Html.Partial(
"_TestUser", Model)
<div id="RequestPlotData">
#Html.Partial(
"_PlotServiceRequestData", Model.requestData)
</div>
<button type="submit">Save Form</button>
}
#section Scripts {
}
_PlotServiceRequestData.cshtml:
===============================
#model ViewModels.PlotServicesRequestDataViewModel
<
div id="RequestPlotData">
#
using (Ajax.BeginForm("_GetPlotDetails", "Test", new AjaxOptions { UpdateTargetId = "RequestPlotData", Url = Url.Action("_GetPlotDetails","Test") }))
{
<h1>Request Details</h1>
<div>
#Html.LabelFor(m => m.plotAddress)
#Html.EditorFor(m => m.plotAddress)
<input type="submit" name="submit" value="Ajax Post" />
</div>
<div>
#Html.LabelFor(m => m.LandUser)
#Html.EditorFor(m => m.LandUser)
</div>
<div>
#Html.LabelFor(m => m.OwnerName)
#Html.EditorFor(m => m.OwnerName)
</div>
}
</
div>
CONTROLLER:
==========
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.Mvc;
namespace
TestNameSpace
{
public class TestController : Controller
{
//
// GET: /Test/
public ActionResult Service1()
{
Injazat.AM.mServices.
LocalDBEntities context = new Injazat.AM.mServices.LocalDBEntities();
TestViewModel model =
new TestViewModel() { user = context.Users.First(), Title = "Land Setting Out",
requestData =
new PlotServicesRequestDataViewModel() { ServiceNumber ="122345", TransactionDate="10/10/2033" } };
return View(model);
}
[
HttpPost()]
public ActionResult Service1(TestViewModel model)
{
PlotServicesRequestDataViewModel s = (PlotServicesRequestDataViewModel)TempData[
"Data"];
TestViewModel vm =
new TestViewModel() { user = model.user, requestData = s, Title = model.Title };
return View(vm);
}
[
HttpGet()]
//public PartialViewResult _GetPlotDetails(string add)
public PartialViewResult _GetPlotDetails(PlotServicesRequestDataViewModel requestData)
{
//PlotServicesRequestDataViewModel requestData = new PlotServicesRequestDataViewModel() { plotAddress = add};
requestData.OwnerName =
"owner";
requestData.LandUser =
"landuser";
TempData[
"Data"] = requestData;
return PartialView("_PlotServiceRequestData", requestData);
}
}
}
You can probably use the jQuery Form plugin for this. This makes the process of posting the data from your form back to the server very easy. The form would post to an action that would return a partial view that you can then push into your UI.
To make this easier, jQuery form actually has a "target" option where it will automatically update with the server response (ie. the partial view returned from your search action).
View
<form id="searchForm" action="#(Url.Action("Search"))" method="POST">
<input name="query" type="text" /> <!-- order use Html.TextBoxFor() here -->
<input type="submit" />
</form>
<div id="result"><!--result here--></div>
Javascript
$('#searchForm').ajaxForm({
target: '#result'
});
Controller
public ActionResult Search(string query)
{
// Do something with query
var model = GetSearchResults(query);
return Partial("SearchResults", model)
}
This should hopefully help you to get on the right track. jQuery Form is a good plugin and is the main thing you should look into for ajaxifying your form posts back to the server. You might also want to look into using jQuery's $.post and $.ajax functions, but these require slightly more work.
I am a newbie to MVC3 technology and trying to workout my way get through a small problem.
I simply need to get checked checkbox values to be saved in database and on Edit view check them back.
<input type="checkbox" value="Photo" name="DocSub" /> Photograph<br />
<input type="checkbox" value="BirthCertificate" name="DocSub" /> Copy Of Birth Certificate<br />
<input type="checkbox" value="School Leaving Certificate" name="DocSub" /> School Leaving Certificate<br />
When the Submit button is clicked, the [HTTPPOST] Action method of the desired controller is called. There I receive the selected values in this form :
var selectedCheckBoxValues = Request.Form["DocSub"];
I am getting the all the checked checkbox values in comma separated form and able to store them to the database, but wondering if this is the right approach to go by.
Also I need to know to retrieve checkbox values from database on Edit view in already checked form.
the typical apporoach to these problems is to use a view with a model
ie, suppose this is view Documents.cshtml
#model DocumentViewModel
#Html.LabelFor(m => m.Photo)
#Html.CheckBoxFor( m => m.Photo )
#Html.LabelFor(m => m.BirthCertificate)
#Html.CheckBoxFor( m => m.BirthCertificate )
#Html.LabelFor(m => m.SchoolLeavingCertificate)
#Html.CheckBoxFor( m => m.SchoolLeavingCertificate )
and use a viewmodel to pass data to the view
the viewmodel is a class where you have the data your going to send to the view, ie.
public class DocumentViewModel{
public bool Photo {get;set;}
public bool BirthCertificate { get; set; }
public bool SchoolLeavingCertificate {get;set;}
}
and you'd have a controller that populates the viewmodel and calls the view
public ActionResult Documents()
{
var modelData = new DocumentViewModel();
//or retrieve from database at this point
// ie. modelData.Photo = some database value
return View(modelData);
}
[HttpPost]
public ActionResult Documents(DocumentViewModel documentsVM)
{
if (ModelState.IsValid)
{
//update the database record, save to database... (do stuff with documentsVM and the database)
return RedirectToAction("NextAction");
}
//else, if model is not valid redirect back to the view
return View(documentsVM);
}
look for tutorials out there on mvc basics. read code.
I have the following index:
<div id='addProduct'>
#{ Html.RenderPartial("Create", new BoringStore.Models.Product()); }
</div>
<div id='productList'>
#{ Html.RenderPartial("ProductListControl", Model.Products); }
</div>
The partial Create view contains an invisible div which is used to create a new product.
After doing so the partial view ProductListControl is updated.
Now I want to do so with an edit function.
Problem: It's not possible to integrate the edit page while loading the index because at this moment I don't know which product the user wants to edit.
My thought:
I'd like to call my existing edit view in an jquery modal (not the problem) so the user can perform changes.
After saving the modal is closed (still not the problem- I could handle this) and the ProductListControl is updated (here's my problem ... :().
How am I able to do so?
I've seen some tutorials but I'd like to keep it as clean & easy as possible.
Most of them are using dom manipulating and get feedback from the server (controller) by a JsonResult.
If possible I'd like to stick to the razor syntax, no pure JavaScript or jquery and if possible I'd like to avoid JsonResults.
One way might be to use the Ajax.BeginForm for your create product view.
The Ajax.BeginForm accepts a number of AjaxOptions, one being the UpdateTargetId (your DOM id, in this case your productlist div), more info here.
Then in your product controller code you can return a partial view, with the product list. So for example:
Index.cshtml
#using (Ajax.BeginForm("AjaxSave", "Product", new AjaxOptions { HttpMethod = "GET", UpdateTargetId = "productList", InsertionMode = InsertionMode.Replace }))
{
// your form
<p>
<input type="submit" value="Save" />
</p>
}
...
<div id="productList">...
</div>
ProductController.cs
[HttpGet]
public ActionResult AjaxSave(Product product)
{
if (ModelState.IsValid)
{
// save products etc..
}
var allProducts = _productService.GetAllProducts();
return PartialView("ProductListControl", allProducts);
}
There is a nice article on about this here.
It has been intriguing that my MVC3 razor form renders duplicated values inside a foreach code block in spite of correctly receiving the data from the server. Here is my simple form in MVC3 Razor...
-- sample of my .cshtml page
#model List<Category>
#using (#Html.BeginForm("Save", "Categories", FormMethod.Post))
{
foreach (Category cat in Model)
{
<span>Test: #cat.CategoryName</span>
<span>Actual: #Html.TextBoxFor(model => cat.CategoryName)</span>
#Html.HiddenFor(model => cat.ID)
<p>---</p>
}
<input type="submit" value="Save" name="btnSaveCategory" id="btnSaveCategory" />
}
My controller action looks something like this -
[HttpPost]
public ActionResult Save(ViewModel.CategoryForm cat)
{
... save the data based on posted "cat" values (I correctly receive them here)
List<Category> cL = ... populate category list here
return View(cL);
}
The save action above returns the model with correct data.
After submitting the form above, I expect to see values for categories similar to the following upon completing the action...
Test: Category1, Actual:Category1
Test: Category2, Actual:Category2
Test: Category3, Actual:Category3
Test: Category4, Actual:Category4
However #Html.TextBoxFor duplicates the first value from the list. After posting the form, I see the response something like below. The "Actual" values are repeated even though I get the correct data from the server.
Test: Category1, Actual:Category1
Test: Category2, Actual:Category1
Test: Category3, Actual:Category1
Test: Category4, Actual:Category1
What am I doing wrong? Any help will be appreciated.
The helper methods like TextBoxFor are meant to be used with a ViewModel that represent the single object, not a collection of objects.
A normal use would be:
#Html.TextBoxFor(c => c.Name)
Where c gets mapped, inside the method, to ViewData.Model.
You are doing something different:
#Html.TextBoxFor(c => iterationItem.Name)
The method internall will still try to use the ViewData.Model as base object for the rendering, but you intend to use it on the iteration item. That syntax, while valid for the compiler, nets you this problem.
A workaround is to make a partial view that operates on a single item: inside that view you can use html helpers with correct syntax (first sample), and then call it inside the foreach, passing the iteration item as parameter. That should work correctly.
A better way to do this would be to use EditorTemplates.
In your form you would do this:
#model List<Category>
#using (#Html.BeginForm("Save", "Categories", FormMethod.Post))
{
#Html.EditorForModel()
<input type="submit" value="Save" name="btnSaveCategory" id="btnSaveCategory" />
}
Then, you would create a folder called EditorTemplates, either in the ~/Views/Shared folder or in your Controllers View folder (depending on whether you want to share the template with the whole app or just this controller), and in the EditorTemplates folder, create a Category.cshtml file which looks like this:
#model Category
<span>Test: #Model.CategoryName</span>
<span>Actual: #Html.TextBoxFor(model => model.CategoryName)</span>
#Html.HiddenFor(model => model.ID)
<p>---</p>
MVC will automatically iterate over the collection and call your template for each item in it.
I've noticed that using foreach loops within Views causes the name attributes of text boxes to be rendered the same for every item in the collection. For your example, every text box will be rendered with the following ID and Name attributes:
<input id="cat_CategoryName" name="cat.CategoryName" value="Category1" type="text">
When your controller receives the form data collection, it won't be able reconstruct the collection as different values.
The solution
A good pattern I've adopted is to bind your View to the same class you want to post back. In the example, model is being bound to List<Category> but the controller Save method receives a model ViewModel.CategoryForm. I would make them both the same.
Use a for loop instead of a foreach. The name/id attributes will be unique and the model binder will be able to distinguish the values.
My final code:
View
#model CategoryForm
#using TestMvc3.Models
#using (#Html.BeginForm("Save", "Categories", FormMethod.Post))
{
for (int i = 0; i < Model.Categories.Count; i++)
{
<span>Test: #Model.Categories[i].CategoryName</span>
<span>Actual: #Html.TextBoxFor(model => Model.Categories[i].CategoryName)</span>
#Html.HiddenFor(model => Model.Categories[i].ID)
<p>---</p>
}
<input type="submit" value="Save" name="btnSaveCategory" id="btnSaveCategory" />
}
Controller
public ActionResult Index()
{
// create the view model with some test data
CategoryForm form = new CategoryForm()
{
Categories = new List<Category>()
};
form.Categories.Add(new Category() { ID = 1, CategoryName = "Category1" });
form.Categories.Add(new Category() { ID = 2, CategoryName = "Category2" });
form.Categories.Add(new Category() { ID = 3, CategoryName = "Category3" });
form.Categories.Add(new Category() { ID = 4, CategoryName = "Category4" });
// pass the CategoryForm view model
return View(form);
}
[HttpPost]
public ActionResult Save(CategoryForm cat)
{
// the view model will now have the correct categories
List<Category> cl = new List<Category>(cat.Categories);
return View("Index", cat);
}
I am beginner in MVC3 and still learning. I try to write an application (MVC3 with Razor) which allows user to select files and upload/save. During upload/save process I want to simply show "wait" text as partial view. I have problem since the partial view is loaded as soon as the web application is started and I got error from HomeController - [HTtpPost] Wait method, since it can't trace the list Files in object job. OF course, the list of Files will be filled after upload. I don't know how to solve this and need your help. Thank you in advance.
My HomeController.cs :
public ActionResult Index()
{
return View();
}
[HttpPost]
public ActionResult UploadFile(IEnumerable<HttpPostedFileBase> attachments)
{
foreach ( var file in attachments )
{
// do something
}
return RedirectToAction("Wait");
}
public ActionResult Wait()
{
// do something
ViewBag.Message = "Wait...";
return View();
}
[HttpPost]
public ActionResult Wait(FormCollection formCollection)
{
Work job = MvcApplication.GetWork();
if ( job.Files.Any() )
{
return RedirectToAction("SubmitWork");
}
else
{
return View();
}
}
The view Index.cshtml :
#{
ViewBag.Title = "FirstTry";
}
<p>
<div id="AddFiles">
#Html.Partial("_AddFiles")
</div>
</p>
<div id ="Wait">
#Html.Partial("_Wait")
</div>
The partial view _Wait.cshtml :
#{
ViewBag.Title = "Wait...";
}
#ViewBag.Message
#using ( Html.BeginForm("Wait", "Home", FormMethod.Post, new
{
id = "waitform"
}) )
{
}
<script type="text/javascript">
window.setTimeout("document.getElementById('waitform').submit()", 1000);
</script>
The partial view _AddFiles.cshtml :
#using ( Html.BeginForm("UploadFile", "Home", FormMethod.Post, new{id = "uploadForm", enctype = "multipart/form-data"}) )
{
#(Html.Telerik().Upload().Name("attachments").Multiple(true)
.Async(async => async.AutoUpload(true) )
)
<input type="submit" value="Send" class="t-button" />
<input type="reset" value="Reset" class="t-button" />
}
MVC does not work like WebForms, client side events will not propagate to server controls (there aren't really even controls, I think Telerik blurs this line a bit and complicates the MVC experience).
You can invoke additional actions in your controller to download HTML or JSON or something, but the only way on the client side to swap HTML without having your page change (since an upload is in progress) would be to use javascript.
I'm not familiar with this Telerik control, but I think you will have to do something on the client side, not on the server side, to indicate loading progress or show a spinner.
Their API shows there is an onupload event you can listen for and possible swap to the loading div:
http://www.telerik.com/help/aspnet-mvc/telerik-ui-components-upload-client-api-and-events.html
They probably have a sample somewhere. I will see if I can dig something up, but really I think just listening for this event is your best bet and do this on the client side, not the server side.