If you try to use a property as a column for a gridview where the value is coming from an implicitly implemented interface, the value will not be found and throw an error. Even if you pass in a List of the interface.DataBinding: 'Class' does not contain a property with the name 'Field'.
View 4 RepliesCan interface inherit othe class or more than one class? Can we create constructor of the interfaces?
View 1 Replies I am setting up my new project..We are using entity frame work 4.0..
Is there any way to generate all classes and interfaces as we create manually for 3-tier architecture...
Or do i need to generate manually...
Ex:
Itest.cs
Public Interface ITest
{
int testproperty {get;set:}
}
Test.cs
Public class Test: ITest
{
public int testproperty {get;set:}
}
Suppose that you have a big Data Entry Web Application Like Microsoft CRM, what is the strategies and technologies that you follow to build a website like it?
I don't want to use any Dynamic Web Page Generation software, because it have a lot of limitations..
Also I don't want to design every page and repeat everything
Is there any resource out there , where one can learn how to properly design user interfaces with ASP.NET controls on Visual Studio ?I have tried on my own by adding <asp:Table/> to form and then trying to accomodate panels within <asp:TableCell/> controls but that isn't quite going the way I imagined it would.This may not be the right way to design UIs, but I don't know any better for now.
View 7 RepliesI'm using EF4 to generate a model. My architecture looks like this:
IMyEntity (custom interface)
-> MyEntity - EF generated class
IMyOtherEntity (custom interface)
-> MyExtendedEntity (Customn Partial class) : MyOtherEntity (EF Generated)
The first entity has a list of MyExtendedEntity. Is there any way I can bind this with the entity framework. I'm targetting ASP.NET and WPF. The main probnlem I have is that I need an ObservableCollection in WPF, while the EF generated class only has an EntityCollection which doesn't even seem to derive from ObservableCollection.
Is there a Django-like admin interface generator for ASP.NET or ASP.NET MVC?If not, are there any tools that could assist in creating one?
View 2 RepliesFrom the following URL i got some doubts about the Recommendations for using Abstract class vs interfaces
[URL]
1. If you anticipate creating multiple versions of your component, create an abstract class. Abstract classes provide a simple and easy way to version your components. By updating the base class, all inheriting classes are automatically updated with the change. Interfaces, on the other hand, cannot be changed once created. If a new version of an interface is required, you must create a whole new interface. { Is there any example for this t ounderstand throughly ?} If you are designing small, concise bits of functionality, use interfaces. If you are designing large functional units, use an abstract class. If you want to provide common, implemented functionality among all implementations of your component, use an abstract class. Abstract classes allow you to partially implement your class, whereas interfaces contain no implementation for any members. { Is there any example for this t ounderstand throughly?
We have a SSO authentication service that other externally facing web pages and services use to authenticate users. A user tries to reach a service, if no cookie is found containing an authentication token, they are redirected (HTTP 302) to the SingleSignOn authentication service. The auth service does it's work, and redirects the user (HTTP 302) to the original URL with their encrypted authentication token in the URL. Great. How can I invoke this from a WCF POX service? No SOAP here, just HTTP GET/POST with XML responses.
What I'm currently doing is, in each service method implementation method, checking the headers for the cookie. If the cookie exists, verify the auth token and process the request. If the cookie doesn't exist or the auth token has expired, then respond with:
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That works, but isn't integrated with any of the WCF features, and requires me to manually code for a whole bunch of scenarios. Is there a way I could implement this using these classes:
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or use some other means that checks each request to the service? I've been reading pages like: How to: Create a Custom Token, but I don't see how it applies to my needs. I'm looking into this because I have some time before my project kicks off, and I'd like to implement this project correctly and learn about WCF as much as I can.
I am new to ASP.NET development. I noted that the design interface provided with visual studio 2010 is not very help ful in designing eye catching website. May be I am missing some pice of inforanmtion. To improve my understanding, specially with reference to Visual studo 2010/ASP.NET, I wanted to know useful resources about HTML, CSS and javascript
View 2 Replies I have attempted to deploy my first WEB application and needed to include the Membership for Internet login. Application works fine when I use Visual Web Developer, but when I deploy to my provider when I attempt to Login, I eventually get the error message (this was after I turned on the debug="true" - full message is
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When I copied the application to the WebSite, I assumed that the ASPNETDB.MDF needed to be copied too with everything that I defined for users and roles. Looked at the WEB.CONFIG and expected to see something defined here as to where it is located, etc. Do not see anything in my project with the name.
I have a build a new 3 tier application (Web,Application,Data tier). The application tier (middle tier) will host wcf web services. I build my service classes, define bindings , contracts etc which does the core business logic, data access and updates.
Now I have around 50 external clients who would want services from my application tier. But my problem is client A might send a flat file request, client B might sends a comma separated file request, client C might be a soap request. The requests further may be either real time or batch. My services may have to send data back to the caller either in a flat file.., xml or a soap response or other formats. The response might also be either batch or real time.
1)Is there a way to standardize the interface for all these 50 clients accessing my WCF services ?
2) If an external client sends a flat file via FTP (intended to serve as input to my service), how do I get this flat file data to hit my service. (Assuming that the legacy system is not service based and hence the external client just sends a file and is not aware of any services of the new system)
I am missing this DLL reference in c:program filesSQL Server90ToolsBinn. I'm assuming that this is because I didn't install the 2005 client. I installed all of the services for 2005, the database instance, reporting services instance, SSAS and SSIS. I installed the 2008 client though, not the 2005 client, and 2008 database instance.So I assume it's because I didn't install the client, but does something else give me this DLL? Another install or a SDK or something?
View 1 RepliesI've got a multi level dependency chain in my object model: An organization has the following children relationships:
Organization
.CompetitionGroups
.CompetitionGroups.Venues
.CompetitionGroups.Competitions
.Divisions.Games
.Divisions.Games.Participants
.Divisions.Games.Participants.GameSegments
.Divisions.SubDivisions...
.Divisions
.Teams
.Teams.Players
.Teams.Participants
.Teams.Participants.GameSegments
.VenueDates
This is just a glimpse at the object model, but it's focused on the complexity of the relationships and lists. What I can't really get is what's the best way to factor my repository interfaces, given the requirements to do a unit of work. For example, to create a game, you'll need a venuedate and two participants. Does that mean the GamesController should require an IGameRepository, an IVenueDateRepository, and an IParticipant repository? Should they be rolled into one repository?
Also, what about in the consumption cases? For example, to display a signle team's schedule, you'll need all of the Participants for that Team, all of the Games for that participant, and all of the GameSegments for the participant. If those are factored into individual repositories I can't see how you can do efficient queries. Does that mean you have Repositories specifically focused on different cases? for example:
public interface IScheduleRepository {
public ICollection<Game> GetScheduleForTeam(Team team);
// More consumption methods
}
public class ScheduleRepositry : IScheduleRepository {
public ScheduleRepository (ModelContext context) {
// Do stuff with context
}
public ICollection<Game> GetScheduleForTeam(Team team) {
return (
from p in context.Participants
where ((p.Game.VenueDate != null) &&
(p.TeamId == team.Id))
orderby p.Game.VenueDate.StartTime
select p.Game).ToList();
}
// more consumption methods
}
public interface IGameRepository {
public void AddGame(Game game);
// More crud methods
}
// Not showing games repository
public class GamesController : Controller {
public GamesController (IGameRepository gamesRepo,
IVenueDateRepository venueDateRepo,
IParticipantRepository participantRepo) {
// do stuff with repos here
}
[HttpPost]
public ActionResult AddGame(Game game) {
// Skipping validation logic
// this?
VenueDate = venueDateRepo.Add(game.VenueDate);
foreach (Participant p in Game.Participants)
{
participantRepo.Add(p);
}
Game = gamesRepo.AddGame(game);
// or this?
// how would the game repo know to persist
// the children elements? is that tight coupling?
Game = gamesRepo.AddGame(game);
}
// more consumption methods
}
My question is I don't yet understand to what degree factoring your repositories make sense based on a connected object model. I'd love to get some advice here.
I have two gridviews, say 'A' and 'B'...I want to add all the rows of 'A' to 'B' while avoiding the duplicates....For eg:
View 10 RepliesIn nested gridview, i am finding some problem, i want to show child Grid headers in Parent Gridview. Can anyone tell me that how it is possible? Its very urgent. Waiting for quick response.
View 1 RepliesA network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
when i upload my site on webserver and connect with remote sqlserver2005 using connection string....
<connectionStrings>
<remove name="ConnectionString"/>
<add name="ConnectionString" connectionString="Data Source=69.16.253.19,1433;Initial [code]...
it shows an error above ..i m using aspnetdb.mdf in my website in APP_Data Folder... features i use in my website is Login Control, Password recovery, signup control...
I am unable to access the data in the gridview's selected row. I have done this lots of times but must be forgetting something.
Here is my gridview:
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I have a dropdownlist outside the gridview control. My griview control also have dropdownlist in the first column. I want to populate the dropdownlist inside the gridview control for all rows when the selected item is changed in the outside dropdownlist.
View 2 RepliesI have a customized gridvew i.e. grvResult. There is a textbox and a InsertButton in the footer.
If there is a data populated into gridview it is showing GridView footer and inserting data but if there is no data in gridview then its footer also not visible.
I have tried in two ways to make footer visible but it is showing following error:
Object reference not set to an instance of an object.
Tried ways:
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I was wondering if it is possible to add additional data to Excel document created from gridview. What I want to do is to manually add data to certain rows and columns (date, couple of titles, etc), but I'm not sure how to do it.
Currently I'm using the following code:
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iam using asp.net with c#, my grid contains 1st column is check box ,and paging is true ,iam displaying data from view that does not contain primary key, so based on this when user selects the no of checkboxes in 1st page and in another page some records then i want to transfer to another page gridview but it is not displaying. can you correct my code where iam going wrong
string constr = "Data Source=MAINSERVER;Initial Catalog=Inventory;User ID=sa;Password=nsg";
protected void Page_Load(object sender, EventArgs e)
{
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how to implement Insert feature to a grid view?I need to use fields with scroll bar inside of a grid view. Is that possible through the template field?
View 23 RepliesHow to populate dropdownlist in a gridview by selecting another dropdown in same gridview
i tried the code in driiopdownlist selectedchanged
dropdownlist d=(dropdownlist)gridview.findcontrol("dropdownlist1") but it gives null
Using vb.net/asp.net 2005.I have an inner gridview.The outer gridview is "Authors" and in the inner gridview (GridView1 below) I have to set it up so that the user cannot delete the last book from the inner grid, if they try to delete the last book from that inner grid then I want to show the exception message below.
So I am checking the GridViewRows1.Rows.Count which works great when I have one record (one book) to start with. The problem is when I have 2 books (for example). I am writing out the test statement below and the RowCount is always 2 each time, never decremented, even after I rebind.Editing this now: i realize that my initial logic is faulty because when I rebind my inner gridview I am not specifying which inner gridview so the result is that only the last inner gridview is being re-bound, so I think that I need to get the selected inner gridview and then refresh that...
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