MVC :: Complex View/user Interaction?
Jun 26, 2010
Basically I have a page where a user can select up to 3 vehicles by make and model. I have 3 divs on the page that is generated with a basic foreach loop. When the user selects a make and model from respective dropdown lists I am firing a javascript function that returns a JSonResult that loads a dynamic partial view into a seperate div. This partial view displays a div with a grid whereby the user can select one of n-number of services using a checkbox.Next what I would like to do is if the user selects a servce for the one of the vehicle selections, I would like to add this selection to a list of "ServiceSelection" that is part of my viewmodel. Ultimately the user would click a button that would redirect to the next step in the process and pass the entire updated viewmodel to this new page.
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Oct 8, 2010
.net has all these build in GUI elements. The purpose is that we build a .net web application and for the coding itselve I'm very familiar with jQuery in PHP but I noticed that in .Net everybody starts using it too.Is jQuery the best way these days to deal with this in .NET (c#)? or are there others you might recommend?
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Jan 18, 2011
i had one .aspx page,which containts in pageload it excutes few stored procesdures for dumping data from Sql Server to mysql Db. So every 30 mints User manulaly running this page.
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Feb 14, 2011
have a web in which there are different areas i have a 1 admin which manage all things like news, Events, Notices, Logs, Forums, Publications etc.........i want assign user rights that select user view only Noticesselect user view only Logsselect user view only Newsetc....
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Mar 15, 2010
In my past I had created the following web page in web forms and I'm learning asp.net mvc right now , I had given it a tought and I run into conclusion I really wont know how to do the same page with asp.net mvc
before explaining you the actuall problem I would explain you the Model The model is a pretty simple , it for few columns which are bool , and a lot of them which are varchar(MAX) The View is built the following way
the bool parts of curse got a check box but the varchar parts are the complicated ones In my web form page i got the following code for each varchar property in my database
[Code]....
my server script gets the following page apon submit and checks if radio button 1 or 2 is selected if 1. it inserts the link as it is into colmn property while if it is 2. it saves the file on the server and saves the file location into the colmn property.
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Jun 5, 2010
I have an user view model that has the following properties:
public User user;
public List<Language> Languages;
I send the above model to the view and use html helpers to build the form, so I end up with something like:
<form action="/Users/Edit/5" method="post"><input id="user_UserId" name="user.UserId" type="hidden" value="5" />
First Name
Last Name
Email
Language
Now, I try to read the POST in something that initially was something like :
[AcceptVerbs( HttpVerbs.Post )]
public ActionResult Edit( int UserId, FormCollection form ) {
and cannot get the user.UserId variable, user.FirstName variable etc.
what needs to be done to be able to read this kind of POST request. I'm kind of reluctant to modifying my ViewModel as it is very simple and easy to maintain as it is.
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Dec 28, 2010
i have a movie object and the movie have comments collection inside it
public class Movie
{
public List<Comment> Comments{ get; set; }
}
so i have a strongly type view like this :
public ActionResult Details(int id)
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Feb 3, 2011
I have a question regarding validation of drop-down list values. I have a view that is bound to a view model type called ReservationData.
This object contains a property CustomerVehicles of type List<VehicleData>. VehicleDatahas two int properties VehicleMakeId and VehicleModelId.
On my view I am trying to loop over the number of items in the CustomerVehicles collection and displaying two dropdowns for each, a vehicle make dropdown and a vehicle model dropdown usingDropDownListFor.
When I try to submit and validate I do not see any validation errors displayed on the screen.
Just in case you are wondering I have added a ValidationMessageFor for each dropdown as well. I am not sure if this is an issue with the structure of my view model and its complexity and how the controls need to be named or how the ids need to be set.
Here is the code for the looping over the collection:
[Code]....
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Apr 15, 2010
[Code]....
What I want to achieve is the ID of the property: item.Item.ID to be bound to the ID from the (route)URL. However I can't get it to work. I tried using [Bind()] attribute.
I fixed it now using a hidden field in the form like so:
<%= Html.HiddenFor(model => model.Item.ID)%>
However this feels a bit icky. I'd like to know if there is a better cleaner way of doing this?
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Oct 25, 2010
I have a somewhat complex model that I need to pass to a MVC 2 Create view so its properties can be filled out. I'm not sure how to actually create this model as it has some relationship data that must also be filled out during the creation process.My main model is a Game. Most of its properties are scalar. It contains a foreign key to Content, for the game reviews, and there's a many-to-many relationship between Games and Platforms - games can be on a variety of platforms (PS3, XBox 360, etc.), and each platform has a library of games.When I pass data to my Edit view, it's as simple as:
[Code]....
I'm unsure what to do in the case of Create as I'm not sure how to link the associated parts - Content and Platforms - to a Game object.
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Feb 16, 2011
I would love to create a "daemon" which in specified time intervals will move-transfer any zip files uploaded by the users from a.example.com to b.example.com
From the info i gathered so far,
The daemon will be an .ashx generic handler. The daemon will be triggered at the specified time intervals via a plesk cron job The daemon (thanks to SLaks) will consist of two FtpWebRequest's (One for reading and one for writing).
So the question is how could i implement step 3?
Do i have to read into to a memory() array the whole file and try to write that in b.example.com ? How could i write the info i read to b.example.com? Could i perform reading and writing of the file at the same time?
No i am not asking for the full code, i just can figure out, how could i perform reading and writing on the fly, without user interaction.
I mean i could download the file locally from a.example.com and upload it at b.example.com but that is not the point.
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Feb 25, 2011
how the WCF, DAO and DTO layers communicate with each other? I would appreciate if someone can specify which layer comes first and then how it interacts with the next layer
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Apr 4, 2011
I built a scraper for an ASP.NET site (specifically a Jenzabar course searching portlet) that would create a new session, load the first search page, then simulate a search by posting back the required fields. However, something changed, and I can't figure out what, and now I get HTTP 500 responses to everything. There are no new fields in the browser's POST data that I can see.I would ideally like to figure out how to fix my own scraper, but that is probably difficult to ask about on StackOverflow without including a ton of specific contex
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May 18, 2010
I have written this code for opening a text file ,but its saying that file not found.
[Code]....
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Aug 4, 2010
I want to understand the interaction of telephone with webforms application.
In order to do that I want to create a small application which will be able to receive multiple calls at a time, place them in a queue and then forward calls one by one to a call answerer.
It should also be able to retrieve the Caller Id i.e number from which the call is being made.
How this may be achieved?
If there is any ready made solution available with source code pls provide links.
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Jan 9, 2010
I am working on a web application project in which i add a dynamic number of LinkButtons at runtime according to user selection, each link should redirect the user to a specific web page ,but what actually happened is that the last hyperlink is the only one responded! the following code show the declaration :
''''''''Public WithEvents ItemName As LinkButton
''Public Sub AddLinkButtons
''''''''For i = FirstIndex To StopFlag
''''''''ItemName = New LinkButton
''''''''ItemName.Text = Dt.Rows(i).Item(1)
''''''''Me.ContentTD.Controls.Add(ItemName)
''''''''Next
''End Sub
''''''''Private Sub ItemName_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ItemName.Click
''''''''SelectedItemToFind.ItemFlag = 1
''''''''SelectedItemToFind.SelectedItem = sender.Text
''''''''Response.Redirect("Default.aspx?Main=SearchResult")
''''''''End Sub
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May 31, 2010
I read some article about unitOfwork and repository but i'm still confused about how they interact, and how to use them in the right way.
I'm using an addressbook project to practise on patterns (even if , likely, patterns are not usefull) without any ORM framework for persistence.
My domain objects are (at now) : AddressBook (acts as an application controller), Contact (contains information about each contact in the address book), ContactGroup (mantain collections of contact).
Should i have to use distinct repository object for contact ad contactgroup?
I thought to use a UnitOfWork for the operation about the adding/removing contact to group : the user can add existing contact to a group, create a new contact while adding it to the group or remove contact from group.
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May 5, 2010
Learning how to do a master page in asp.net. Trying to figure out how my style sheet interacts with respects to the master page and content page. I can get HTML tags like body and the style sheet to react. But when I call the ID attribute of a label no styling takes place. What am I missing here as far as interaction? BTW I'm using VS2008
CSS sample:
body
{
height:1200px;
width:920px;
border-style:solid;
border-color:blue;
padding:10px 10px 10px 10px;
}
#toptext1
{
position:relative;
top:-225px;
right:-500px;
font-size:22px;
font-weight:bold;
}
From the master page:
<body>
<form id="form1" runat="server">
<asp:image id="cookNookLogo" ImageUrl="images/Logo.gif" runat="server"
AlternateText="CookNook" Width="449px"></asp:image>
<p>
<asp:Label ID="toptext1" runat="server" Text="Quality Recipes, Hints and Supplies"></asp:Label>
</p>
From the content page:
<%@ Page Language="C#" MasterPageFile="~/CNMasterPage.master" AutoEventWireup="true" CodeFile="Home.aspx.cs" Inherits="Home" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<link href="App_Themes/cn/cn.css" rel="stylesheet" type="text/css" />
</asp:Content>
When I was doing this without a master page it worked so where am I going wrong with the attributes?
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Dec 11, 2010
I have several ASP.NET sites, hosted on the same domain (different subdomains) and working via HTTPS. I have WCF service, hosted on the same domain. I have a separate state server for sessions.
All sites use cookieless session (if someone asks why - i will reply later, but it's a 'must')
On my sites, I use grid components from Telerik (but actually it does not matter) that ask for data from WCF service and must be filled with this data.
The problems are:
1) I cannot manage to make POST request to WCF service from javascript: for some reason it's always either GET or OPTIONS (no matter if I use Sys.Net.WebServiceProxy invoke or just a plain jquery AJAX request). It happens even if I indicate COOKIE mode, not cookieless. Maybe because of this I am getting "405 Method not allowed" error - WCF is set for POST request, but the site sends GET...
2) I cannot manage to retrieve SESSION from my websites! I tried approach, that I found, but WCF always uses OWN session, instead of 'connecting' to existing ASP.NET session, despite on ASP.NET compatibility mode. I need SESSION to exchange data between my sites and WCF service
3) I don't have idea currently, how to manage security when exchanging data between mentioned ones, in the light of above-mentioned problems...
4) I don't know exactly, how web.config for WCF service should look like in my case, because I've seen tons of different variants, but all for some simple cases.
Would be really appreciated for the help! I'm stuck for 2 or 3 weeks already, far behind the plan, but nothing still works... I can see there are some pieces of info about similar problems, but I'm afraid to miss some small thing - in web.config or method attribute or IIS setting, etc - and f... up everything.
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Apr 27, 2016
When a user wants to view another user profile on user profile page this error will show up
ERROR
Server Error in '/' Application.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 72: protected void OnDataBound(object sender, EventArgs e)
Line 73: {
Line 74: string userName = (FormView1follow.Row.Cells[0].FindControl("hfUserName") as HiddenField).Value;
Line 75: string friendsUserName = (FormView1follow.Row.Cells[0].FindControl("hfFriendsUserName") as HiddenField).Value;
Line 76: string followStatus = (FormView1follow.Row.Cells[0].FindControl("hfFollowStatus") as HiddenField).Value;
HTML
<div class="text-center">
<asp:FormView ID="FormView1follow" runat="server" OnDataBound="OnDataBound" Width="100%">
<ItemTemplate>
<asp:HiddenField ID="hfUserName" runat="server" Value='<%# Eval("UserName") %>' />
<asp:HiddenField ID="hfFriendsUserName" runat="server" Value='<%# Eval("FriendUserName") %>' />
[Code] .....
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Apr 12, 2010
I have 2 nested master pages, lets call them MP1 and MP2. MP1 is top level, MP2 is level
2. Then I have several content pages. Lets say I have 2 content pages for now CP1 and CP2. Each content page has a form that will have some user input and a SaveData()function that saves the data to a database. Each content page also has a "Save" button that calls the SaveData() function.
MP1 and MP2 have several link buttons. The functionality I need is this: Any time a user clicks on a link button in MP1 or MP2, the SaveData() function of the currently loaded page should be called. This is to save the data even if the user forgets to click the "Save" button before leaving the page.
So far I can do this from the link buttons in MP2. I followed the master pages tutorial # 7
In the .cs file for MP2, I declare:
public event EventHandler SaveData;
then i raise a "SaveData" event any time a link button in MP2 is clicked.in every content page (CP1, CP2 etc.) aspx file, I have Master Type directive to assign the Master Page to MP2.
in CP1, CP2 etc .cs file, i have the following code:
protected void Page_PreInit(object sender, EventArgs e)
{
//wire up the SaveData event from MP2 to Master_SaveData function in this page.
Master.SaveData += new EventHandler(Master_SaveData);
}
private void Master_SaveData(object sender, EventArgs e)
{
//when the MP2 SaveData event is raised, save the data in this page.
SaveData();
}
All of this works fine.Problem is I am not able to do a similar thing from MP1.What I have tried so far is to raise an event in MP1 that is handled in MP2. When the event is handled in MP2, it raises the SaveData event to be handled in the page. The event in MP1 is null and hence never raised.
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Nov 10, 2010
I am building a web application where i am using multilingual support.
I am using variable for label text display.so that administrator can change in one area and that text reflects throughout the application.
which is better less time consuming for display label text?
1)using relational db interaction.
2)constant variable.
3)xml interaction.
how could I found/calculate the processing time of the above three.
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Jan 19, 2011
Firstly there's a great overview of the IIS7 HTTP request lifecycle and various settings that affect performance here:
ASP.NET Thread Usage on IIS 7.0 and 6.0
Very specifically though, in dotNet 4 the defaults for maxConcurrentRequestsPerCPU and requestsQueueLimit are set to 5000. E.g. equivalent to: (in aspnet.config):[code]....
Seems to me that on a multi-CPU/core server the requestQueueLimit here will always be invoked well berfore the 'perCPU' limit. Thus, if a max of 5000 requests per CPU is what you actually want then I would expect that the requestQueueLimit needs to be increased to 5000 * CPUCount or just disabled altogether.
Is my interpretation correct? If so can I disable requestQueueLimit? (set it to zero?). The documentation on this setting doesn't appear to address this question (so maybe I'm missing something or misreading?)
** side note from the above article: The requestQueueLimit is poorly named. It actually limits the maximum number of requests that can be serviced by ASP.NET concurrently. This includes both requests that are queued and requests that are executing. If the "Requests Current" performance counter exceeds requestQueueLimit, new incoming requests will be rejected with a 503 status code)
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Jun 9, 2010
i currently work on an asp.net mvc 2 project and noticed that inside an asp.net mvc view page i can get the user name authenticated via User.Identity.Name, but if i try to use the DsiplayFor method in order to display my model from a view user control, it just does not exist. Could i pass this parameter to my model using additional ViewData parameter that comes with DisplayFor html extension?
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Jul 20, 2010
This is kind of cross-post; however, can a custom http handler be automated to run either using a timer or a filesystemwatcher to post an xml document to another server (with no human interaction)?
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