Entities In 'SqlServerContext.Foos' Participate In The 'FK_Foos_Bahs' Relationship
Mar 24, 2011
I keep getting the following error message when i try to save a poco entity, using Entity Framework as the OR/M :-
Entities in 'SqlServerContext.Foos' participate in the 'FK_Foos_Bahs' relationship. 0 related 'Bah' were found. 1 'Bah' is expected.
the error message makes sense -- but that is NOT what I modeled :( (or am trying to model). It's saying that if I wish to save a Foo, then I need 1 instance of a Bah. A Foo can exist without a Bah. The relationship should be 1 <-> 0-or-1 .. not 1 <-> 1.
I make ASP.NET MVC3 application for spa and I've encoutered problem with M:N relationship. I've got this model Each Insurance Company has different pricing for each patient medical indication, so sample data looks like this:
IC Indication Patient IC1 Indication1 Patient1 Patient2 Indication2 Patient3
[Code]....
And I don't know how to make Edit with possibility of changing not only Indication but IC to.
I have 2 table in my db kategori(category) and alt_kategori(subcategory). it have a relation kategori to altkategori.I can add kategori but i cant add altkategori i take this error participate in the 'KategoriAlt_Kategori' relationship. 0 related 'Kategori' were found. 1 'Kategori' is expected.
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If I use the extenders (for example mask edit) in place of some of the built in validators such as RegularExpressionValidator for exampe, will Page.Validate() still be called automatically and perform server side validation using the extenders?
We are starting a new web based product in which we are planning to expose our business logic through WCF services. We will be using ASP.NET 4.0, C#, EF 4.0. In future we want to build iphone applications and WPF applications based on the services. I have been reading a lot about using POCO vs Self Tracking Entities (STE) and from my understand the STEs do not work well with the web scenario.
need Users to be able to be friends with other Users (Users are kept in the User table) im trying to create a "Friends" table so they can relate to one another.I need the UserID stored along with FriendID, UserID is of the current user and FriendID is related to the UserID of the friend. ARGh so confusing. Im getting lost even talking about it again, basically the way ive written my code i need the FriendID to relate to the UserID of the user table so i can find the person im after so I can display there credentials on the current "UserID" page but I also need some way to find out all the current UserIDs friends
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I have to create a very simple database driven website ( for a project ) with basic features like a login system, etc. I have completed most of the basic tasks required, but there is one section that is asking me to 'Use persistence to maintain state/relationship'.
I have read a few articles and videos about persistence but I don't understand its benefits and why and how it should be used. Can anyone point me towards a site that explains how to implement state persistence in a simple way. I don't need anything advanced just a very simple way of integrating this into a very simple site to say its been done.
I think I'm just after advice on best practice with this! I have a database which has 2 tables. The first table has ID, Name, Address and the second table has ID and JobType. Table 02 can list multiple types of JobType so we could have
Table01:
1. D Smith. Address01 2. S.Jones. Address02
Table02
1. Accounts 1. Sales Ledger 1. Chartered Accountant 2. IT 2. Web Design 2. Graphic Design 2. 1st line support
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I want to display details STRONGLY TYPE In a view this would be done as normal through the list, hiting the details link. however a table of notes is connected to the main table of info. i want to us the id of the main table item to list all the notes that have been entered about the record in the main table. how do i do this
I'm trying to understand the relationship between assemblies, namespaces and classes. Can anyone help explain or point me to a usefule link?
1. I understand that an assembly is typicall a dll or an exe (perhaps other files also). Does each project compilation produce only 1 dll? Or is the number of DLL dictated by something completely different?
2. I read each assembly can contain multiple classes. Asingle assembly can contain classes for multiple namespaces, and asingle namespace can span multiple assemblies.
I have an ASP.NET project where I want to keep the membership (SQL Provider) in a separate database and the Roles/Profiles will be per application.QuestionWhat is the KEY that relates between the Membership database and the Roles/Profile database? Is it the UserID or UserName?I opened up the tables in separate expolrer and notice the UserID is different in the Membership database from that in the application Roles database.
i am working with multiple table with some same columns, so here i want to use the concept of primary key and foreign key.primary key is very easy to put on any fields but, i dont know how to give foreign key and how to create relationship between same fields of two table.
I've used aspnet_Profile and I add new values. In the field "PropertyNames" I added value "DomainId". In the field "PropertyValuesStrings" I added value I get from the table "tbl_Domain.
How do I connect aspnet_profile table, column "PropertyValuesStrings"with tbl_Domain, column 'Id' primary key.
I have a database which contain job ads/ I have one table "dbo.tbl_jobadvert" which contains the ad itself and another table "dbo.tbl_jobFiles" which contains the path of the documents uploaded in relations to the job advert ( application form, job description, etc )
A co-worker of mine just came back from a SQL Server Reporting Services class (we are using SQL Server 2005). In that class they were told that if they had a one to many relationship that they would have to flatten the results into one row of the resultset in order to show the 'many' portion of the relationship. For example, my company has two tables:Jobs Notes/Memo'sor each Job we can have 0 or more Notes/Memo's.According to my co-worker the Report Server must have each of the Notes/Memo's in one row of the resultset. That we therefore have to flatten the list of Notes into Note1, Note2, Note3...etc fields.Is this correct? How would I handle a situation where I didn't know how many Notes there were?
I have 2 objects, that can exist seperately - lets say man and woman, neither needs to know about the other. But once they get get "married" it can only be married to each other. In other words, I'm trying to create 2 tables, 1 table has a FK to the other, that is NULLABLE. When i try to set the relationship to 1-to-1 via the dmbl, it wont let me - which makes sense. Ultimate i want to
1) create a women (no knowledge of a man)
[Code]....
Is this even possible? If i do a one-to-many - how can i make it act this way? At the business layer? create a partial class and override stuff?
