Using the Entity Framework in n-Tier ASP.NET Applications which write by julie lerman in section "Example 21.10. A TemplateField, which can be used for navigation properties".
When I run the application I get a Compilation Error "The name 'Databinder' does not exist in the current context" someone can tell me what my mistake?
I warking with EF 4 in vs 2010 with asp.net application. In my page I put detailsview which connet to objectdatasource. I want to bind navigate property to text in murkup like this:
<asp:TextBox ID="txt_legalStatus" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"legal_status_codes.Term") %>'></asp:TextBox> according to this article (from o'reilly book)
Using the Entity Framework in n-Tier ASP.NET Applications which write by julie lerman in section "Example 21.10. A TemplateField, which can be used for navigation properties". When I run the application I get a exception "The ObjectContext instance has been disposed and can no longer be used for operations that require a connection" someone can tell me what its not working?
I've been learning MVC 2 and I have pretty much everything understood except for the model part of things, I understand what the model is but actually implementing it has me confused.
Here's my situation, I have my DB which has 3 tables;
Ideas - table of ideas Tags - table of tags IdeaTag - link table connecting the above 2 tables via FKs
So when using the Entity Framework (.edmx) designer in VS2010 I get 2 classes created in the Designer, which obviously map to my DB tables and Navigation Properties in Idea for Tags & Idea for Tag.
So this is all fine until I actually try to add tags to an idea, what's the best practise for dealing with Navigation Properties? I wanted to add a Textbox which will then map to the Tags property in the Idea class but I'm unsure how I'd go about this.
Most of the MVC tutorials which discuss EF or Linq to SQL are quite basic.
I have an EntityDataSource I've mapped to the entity Resident which includes two navigation properties (Building1, Room1). I've set my GridView to use this EntityDataSource and set the EntityDataSource Include property to Building1, Room1 so it includes these navigation properties and have added these columns to the GridView. When I run the application instead of displaying the associated navigation property it shows this: webHousingAdmin.BuildingHow can I get it to display the actual value? Code looks like this for GridView:
Is it possible to insert information into the gridview's pager, like "Showing 10 of 55 items (You are on page 3)" and bind that information accordingly to the actual PageCount and PageSize properties?
I can only think of doing it outside the pager, even outside the GridView.
I have a new VS2010 .NET 4.0 Web project and the Properties Folder has gone wierd on me. It has lost teh "Open" under the right click. There is no way to get a Settings file created now.
I am unable to get to the Settings grid and no Settings file is created. I tried the help and it has the normal trip of select Properties, Open (right click), Settings Tab, etc. etc.
I am relatively new to ASP.NET. I am just wondering if there is way to read values from properties file (similar to rading a properties file from JSP or java).
For example if a property file has something similar to this:
[Code]....
I would like to read all the values for username_list (comma seperated) and also the value of is_valid.
I have connected listview by using datasourceid that means by using "sqldatasource1" now i want to change value of listview at run time according to search so for that i am using datasource at codebehind. but it give an error
"listview have already bind with datasourceid you can not bind it with datasource"
i am using ajaxtoolkit:combobox and i tried to bind data to this control in code behind file.but it is taking 3 to 4 mints to bind data and display the page. I am providing my aspx code and code behind code here
[Code]....
Code behind code: [Code]....
GetPrograms() method will return almost 6000 records. to load the control it is taking almost 4 minuts..
I used below code in ASp.NET web forms code behined. Its passing parameter in the URL to which which page I am on so that I make HTML and add ON CLASS to show the page I am on.
i want to make navigation bar with items i will select them as (category,Product,....) So i made stored to get them throught paramater will pass it,s value from query string as.
ALTER Proc Navcategory ( @Category_Id Int ) As Select Distinct Categories.Category,Categories.Category_Id From Categories Where Category_Id=@Category_Id and i mentioned in cs as if (Request.QueryString["Category_Id"] != null) { Banar.ImageUrl = "Handlers/Banner.ashx?Category_Id=" + Request.QueryString["Category_Id"] + ""; using (SqlConnection conn = Connection.GetConnection()) { SqlCommand cmd = new SqlCommand();........................
I will have a web site which include serveral functions for a training coudrse. For example,
1. Search the course 2 . Register the course.
What I want is to show the current status in the left pane of the browser. for example, if the user is searching the course, then in left pane "serach course" Will be highlighted. If the user is registering the course, then in left pane "registering course" will be highlighted.
I have a login module in my webpage from where i want to redirect every user to a common page but their accessibility should vary on the same page,..some of them should get 10 links on that page whilw some should get 20 links on the same page...
In the application i come to products.aspx from five different pages.I have back button on the products.aspx page.How find from which page user navigated to products.aspx
i've been looking everywhere to find a good tutorial on building a simple breadcrumb navigation for my application. I know that MVC 2.0 can do this very easily but for my application it needs to be in 1.0 as that is what is used at the University. Could anybody point me in the right direction as I seem to be spending way too much time for something that is supposed to be a simple add on.
I have a question for the navigation and I don't know how. For example when the users access the product page, on the top of the page it will display home > product, if the user access one product in the pens category, it will display home>product>pens.
I've been tasked with managing the re-write of a very large enterprise application's UI. The existing UI was built upon an infrastructure which leverages the EntLib 3's PageFlow application block and the Web Client Software Factory. It performs horribly - part of the reason we need this upgrade so badly.
The problem is that these pageflows are very complex, using extensive conditional page transitions. When editing a data form, selection of a single value can determine not only what page you will reach when you click "Next", but whether a sub-pageflow is entered upon navigation instead, or a new pageflow is opened in parallel, etc. We deploy our UI in such a way where we control our API, but we allow certain licenses to purchase our UI code and extend/modify it as they deem fit. One of our selling points is that we allow the customer to "configure" or redefine pageflows using the VS designer.
In transitioning to MVC2 (or 3), we'd like to continue to offer configurable, conditional navigation throughout our various data entry page sequences. However, although I have developed the beginnings of our app in MVC2, I'm not sure the best way of implementing this data-entry pageflow "conversion". Sure, I've had my resources produce some solid designs - but all of them seem to require implementation of a complex controllerfactory. But one of the main attractions of MVC2 for me was its lightweight codebase and resultant performance gains - and I'm afraid that bypassing portions of MVC2 functionality by writing custom factories and the like will drastically reduce the performance of the app, making our UI refresh virtually worthless.
My initial thought was to write a custom filter that would implement the OnActionExecuted method. Every controller's primary POST methods would be marked with this attribute. Upon execution it would evaluate what view the user was on and look up the navigation event for that view in configuration. This config would have a default "next page"/"previous page" mapping, and can also allow for defining a type which would use conditional logic to determine the next page based on the posted model data. The actionfilter would use this type to find what route to navigate to next. I'd like to pick you experts' brains on this - does this seem like a solid design? Is it using best practices? And will it indeed perform better than a controller factory, or am I completely off-base here?
