Architecture :: Passing Objects Between Aspx Pages?
Jan 21, 2010
I have an application that uses DataContracts/DataMembers and Serialization to store information entered in a tab control. There are 8 tabs in the control (therefore 8 aspx pages). The final tab is used to write the information to disk.I am trying to understand: When should serialization be used in a web app? The objects are stored in memory not on disk. Is this another means of passing objects between aspx pages? If so when should serialization be used vs. session objects? How long is the serialized object retained in memory?Can I get a simple example of how to serialize in one page and deserialize the object in another page?I've read many blogs regarding serialization but have yet to find a simple example and none of them explain when serialization should be used vs. session objects?
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Jan 25, 2011
I would like to provide my client with a aspx pages, with code behind provided, etc. But in some cases they will want to write their own markup - I'm thinking of having 2 directories [siblings of each other], one for the pages I provide, and the other for their custom markup. At page serve time, check to see if the client wrote their own markup and if so use it. Otherwise use the default provided.
In a nutshell I would like for my clients to be able to modify the pages I provide, but if they blow it up have a very easy way to back it out. Or to put it in a more positive light, allow them to override my pages easily.
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Dec 15, 2010
i want my application to provide a web ui for remote access, but i do not host that web page in IIS, because i do not want everyone install IIS on their home PC.
i spend some reading the asp.net pipeline, but still not figure how to load the .aspx file in my code.
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Dec 28, 2010
I've a form containing 30+ textboxes. I'd like to save the data entered in the form texboxes in an object(session) and pass them into another page and simply display the values in a tabular form. How can i do that. Also, suggest me the best way to do it.
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Jun 21, 2010
firstly a static class only ever exists once and is not an instance. Any static members (ie static int NoOfPeople;) is stored in one place and is shared between all sessions (like the old global variables).
Now static methods is where i'm not 100% sure. If I have a static method that doesn't use any other static members could this cause inconstant results, example (this is a fairly pointless method but just a quick example of the top of my head)
[Code]....
So in this example if two sessions (or threads) were to call this at the same time - would they both get back the expected results, because the method only uses private data (a, b and totalToReturn).Im sure this sounds a little simple but I will be using static methods to build user objects and various other objects that there will have to be a 100% garentee that the objects will not get mixed up between sessions and the wrong things return to the user.
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Aug 30, 2010
I have this snippet in my html... Fusion Charts requires I feed it an XML to create a graph
<script type="text/javascript">
var myChart = new FusionCharts("/Content/Fusion_Charts/Charts/Column3D.swf", "myChartId", "470", "350", "0", "0");
myChart.setDataURL("/XML/Graph/?list=<%=Model.list%>");
myChart.render("Graph");
</script>
So in my XMLController I simply have a method like this
public ActionResult Graph(FusionChartsList list)
{
return View(list);
}
So my question is... how can I get the object to actually populate when passing it as url parameter??
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Mar 20, 2010
designing Business Objects. What a business object class can contain ?
I have looked many sample codes and articles. Some only use properties in them. Some use private members, properties and constructoers. As more I am reading becoming more confuse.
Some sample codes that I checked were making functions in BO classes as well. what a BO class should contain and what is its purpose. Should there be functions in them as well ? If yes how they can be differentiated from Business Logic class functions.
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Feb 23, 2010
I am new to OOP. Kindly guide me why making business objects is good ? how and what benefit they bring in development. As I am new to OOP if please you decidable with example in simple way will be great help to me.
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Feb 2, 2010
We are using below class(TypeInterceptor) in one of our project to create the instance of business objects.
To Create any business object, we are using the below code
++++++++++
BLayer.TestBO objTestBO;
this.objTestBO = TypeInterceptor.CreateObject<BLayer.TestBO>();
+++++++++++
I think using this kind of creational pattern makes the application not scalable as the same instance will be shared among all the concurrent users.Is it correct?
Is there any better way to abstract the creation and maintaining instance of business objects
Class code:namespace Microsoft.IT.RelationshipManagement.Internal.CISF.Infrastructure
{
using System;
using System.Linq;
using System.Text;[code].....
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Dec 10, 2010
How to use $.ajax(..) JSON to invoke asmx webmethods that have 'by ref arguments' for custom classes/objects? Is it possible?
My c# code -
public class MyCustomClass{ public int MyProperty; MyCustomClass(){}}
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public Method1(ref MyCustomClass MyCustomObj)
[code]...
This all works fine if the webmethod's argument is NOT by ref.With the above mentioned signature of the webmethod, i.e. with a by ref argument, I get a server error (in server response seen using firebub ) -
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Apr 16, 2010
I'm trying to pass a list of items from a LINQ query to a View, but I'm having trouble figuring out how to resolve a type issue. Here's the error:
The model item passed into the dictionary is of type 'System.Data.Linq.DataQuery`1[Project.Models.Diagnostic]' but this dictionary requires a model item of type 'Project.Models.Diagnostic'.
The issue seems to originate with this code from my Controller:
[Code]....
I tried changing the IQueryable<Diagnostic> to var and got the same error. Also played around with something like:
[Code]....
But then VS2008 says that diagnostics could never be null, and that's may not the best (or even valid) way to do it.
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Sep 2, 2010
I would like to pass List<SelectListItem> (not selected item but the whole "List" object) back to controller.
for example in my GET controller i would have this
ViewData["list"] = some select list from repository;
then on post I would like to get the list back from view..pretty much i'm trying to use ViewData["list"] as storage..this way I would use ajax to remove or add items to/from the list.
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Apr 1, 2011
I have an Edit form that utilizes the following ViewModel:
[Code]....
SUserDetail, User and CUDetail are LINQtoSQL classes in my [ .dbml ]. What the above ViewModel allows me to do, is provide a nice and neat Edit form populated with data from the above 3 objects.
However I am stuck on how to handle the HTTP Post for the Edit Action.
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Jul 5, 2010
I am currently in the process of creating data transfer objects (DTO) and I am having following queries egarding the same:1. There are some of the Properties of my DTO that will be used only in some places and So in other place it will be an overhead to populate these properties. How should we handle this design problem?2. Should we be including the Aduit information(such as the logged-in person's ID) in the DTO? If not, how do we transfer this audit information between the various tiers of the application?
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Mar 24, 2010
I'm playing around with a asp.net page that's using the IScriptControl interface to pass data from the code-behind to the custom javascript object running on the browser.I'm passing a number of properties via IScriptControl.GetScriptDescriptors(), and they're all working fine, except for one.That one is a class derived from System.Collections.Generic.Dictionary<>. And even that one has been working for me, so long as the elements in the collection were scalars - ints, doubles, and strings. But when I tried to pass a member of a class, it showed up as a null object in the javascript. The class in question is marked [Serializable]. I changed it to a struct, and got the same behavior.It looks as if the serializer used in IScriptControl does a shallow copy.
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Oct 29, 2010
I am using Interface for Respositary.where these can be best used.Also googling to understand these.
What do mean by concret class and domain objects?
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Aug 5, 2010
I need to pass a list of Entity Objects from Controller to View but not put it in the Model context. It is the users homepage, but I am putting a list of alerts on the users home page(somewhat like facebook). So I need the User Context as the Model I pass but need to pass the Alert model as well so I can show the list of alerts.. How would I do that? The code below is what I have so far..
UserController
[Code]....
UserRepository
[Code]....
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Jan 22, 2010
I have a form that I don't want to post back so I need to get the form values into my controller via jquery's ajax method.Here is my test controller method:
[Code]....
When I debug the controller method and look at the lineItems parameter, it always contains 0 items. I've tried various formats for the javascipt lineItems parameter but still 0 items. I'm also open to some other way of getting these values in like the jquery form serialze method or something else.
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Mar 8, 2011
At the moment I pass values from one page to another. I need to pass objects between pages, how can I do this.
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Oct 11, 2010
I wrote a test page that does a bunch of busy work in a method called at page load. This process as I have it now takes around 12 seconds.
If I try to load another page while the first long running page is loading, this second page doing nothing except writing out a world, it doesn't load until the first long running page is finished.
Why is this the case? I would think IIS would be able to handle multiple concurrent connections, it seems crazy that one long running page would stop every other page in the application from loading. I must be missing something or not understand how IIS works.
I would think multiple independent requests would be spawned on different threads. Is this only the case if the requests are from different sessions entirely? Are all requests from a single session bound to a single thread?
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Oct 31, 2010
I am making use of 3-tier architecture.In UI layer, i am getting user input and converting it into XML document. But now question arises that how can i pass this xml document to business and data access layer?
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Mar 30, 2011
I am working on implementing a web application in ASP.Net by following the MVC design pattern (Not ASP.Net MVC). As part of the design, we have entity objects that has only properties as per the corresponding table structure and the idea is using these entity objects in the view layer and the same entity objects are passed to Persistence Layer for saving the data to the database. Business Objects in the business layer are responsible for interacting with the database.
As view creates the entity objects and passes to next layer, what would be the best practice to pass the entity objects to the business layer? Should the business objects accept data objects as parameters and interact with the persistence layer? Is there any other best practice to pass the required objects from the view layer to the next layer? As business objects also need to access the properties of the entity objects passed from the view layer, do we need any "translation" from entity objects to business objects?
the best practices to pass entity objects from view layer to the next layer and also how the entity objects created by the persistence layer can be used by business objects?
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Nov 25, 2010
Most of my DAL functions use structures to pass the data back to the BLL and to the UI. I have got the try catch code now and it all works fine. I capture the exceptions in a seperate db table and it all works fine.I wanted to know how to pass the error up and what varable would be used to hold the error statusWhat I was think was - if I had a BO structure that was used to in the DAL and was populated and I wanted the error state up do I need to have a specific error field in the structure.
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Feb 22, 2011
I have a Default.aspx page in which I have bind a Grid. In the Grid is a button named Details.
I also have a Details.aspx which has a GridView. If I click the button that exist in Default.aspx, there appears an Details.aspx page which appears empty.
When click the Detail button of a specific row, there appears the details of that button clicked. I am not understanding on how to pass the ID to Details.aspx.
Details.aspx
<asp:GridView ID="DetailsGridView" runat="server" BackColor="White" AutoGenerateColumns="false"
BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px" CellPadding="4" DataKeyNames="ID"
ForeColor="Black" GridLines="Vertical">
<FooterStyle BackColor="#CCCC99" />
[Code]....
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Feb 24, 2010
I'm currently in the process of creating a library app to use inconjunction with websites. Note: NOT JUST ASP.NET SITES. I say this because i've made the dll available to COM and it works, I can reference it from VB6 and see the types/functions/enums etc...My question though is this: I like using List<type> in c# and I know if this dll was only to be used with .net sites then there would be no issue but how would a List<type> be returned to a different environment. Can they recognize this?
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