MVC :: Creating Foreign Key In Model Classes?

May 31, 2010

I am trying to create a relation between 2 of my model classes. I have separated my Model classes to be in their own project "Domain Model" and the application exists in the "WebUI" project.

I have 2 models.... SupportIssues and Users....

SupportIssues has a column UserID which is also a primary key in the Users table.

I want to create a relationship where one user can have many support issues.

I just can figure out how to do this?

Here is a snippet of my supportIssue.cs class:

[Code]....

How can i link UserID to my User.cs class?

Is it anything to do with the [Associate] tag?

View 2 Replies


Similar Messages:

Visual Studio :: Configure SQL Server In VS2010 / Creating Model Classes With Linq To SQL?

Mar 17, 2011

I can't believe I'm having so much trouble finding this information. I'm endeavouring to learn about creating model classes with Linq to SQL. By default VS2010 wants to use SQL Express, but our organisation has several database servers for development so I'd rather use one of those. PLEASE can somebody tell me how I can configure VS2010 to do that, as all I get is 'A network-related or instance-specific error occurred while establishing a connection to SQL Server ... Verify that the instance name is correct'. Yeah, thanks Microsoft. Actually telling me how to verify the instance name would be a really good move here.

View 1 Replies

Map Model Classes To ViewModel Classes Or Aggregate Model Classes In ViewModel Classes

Dec 15, 2010

I'm curious as to what people consider better practice, between duplicating model structure in the view model and using a mapping tool to move data between the two, or aggregate the model inside the view model, i.e. have a property on the view model class that is a reference to the actual model. Which is considered a better approach in general?

View 1 Replies

MVC :: Display Foreign Key-bound Property From Model View

Apr 17, 2010

but I am new with MVC and database-driven applications.

I hava a table with Cities (ID,Name) and one with Businesses(ID,CityID,Name). The later has a foreign key relationship with the first table.

I used a linq-to-SQL class to create my models.

My problem is that I need to access the City Name(not the ID) when displaying the Business Model View.

How can I do this? if from my controller I call the View passing the auto-generated Business Model, I only have access to the ID.

View 2 Replies

MVC :: Inherited Model Classes?

Feb 26, 2010

This is my first post in this forum and I want to congratulate all the ASP.Net MVC team for this great framework.Somedays ago, I saw the new ASP.Net MVC 2 Model Validation, following the instructions from Scott Gu blog...I found something interesting that I don't know if it's an expected behavior or a bug.My Model class is inherited, so I have something like this:

[Code]....

I have an descendent of this class with some more properties, and the validators for ASP.Net MVC:

[Code]....

Then I found that the Client validation don't work for the inherited property

View 11 Replies

SQL Server :: Creating Foreign Key And Primary Key?

Dec 7, 2010

I am new to sql. I got this task to design a table in sql. It has for columns user_ID(PK, FK1) , WebSite_ID (PK, FK2), Create_Dt, Update_Dt How do I create PK and Fk1 and PK FK2 in sql server 2008 R2

View 3 Replies

Automatically Generate Buddy Classes From Model In C#

Apr 28, 2010

I use Linq to Sql (although this is equally applicable in Entity Framework) for my models, and I'm finding myself creating buddy classes for my models all the time. I find this time consuming and repetitive. Is there an easy way to automatically generate these buddy classes based on the models? Perhaps a visual studio macro?

[MetadataType(typeof(PersonMetadata))]
public partial class Person
{
}
public class PersonMetadata
{
public object Id { get; set; }

View 4 Replies

MVC :: How To Use Of Validation With Data Annotations In Model Classes

Dec 12, 2010

I make use of validation with data annotations in my model classes. How do I make sure this annotations are not violated when I validate data in my business layer, before sending it to the DAL? I guess I don't want to define the validation rules in two places (model classes and in my BLL-classes)?

View 6 Replies

Model Collections Of The Same Class Held By Several Other Classes?

Nov 30, 2010

How do I model the following using Castle ActiveRecord?

I have two classes, Customer and Task.

I would like to reuse a third class, Note, stored in a Collection in each of the Customer and Task classes.

[Code]....

I would then like to be able to pass the Notes collection to a Gridview, Listview or Repeater in the relevant ASP.Net page for the Customer or Task classes.

View 2 Replies

ADO.NET :: How To Create Classes And Interfaces Using Entity Data Model

Jan 28, 2011

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:}
}

View 1 Replies

MVC :: To Put The Data Annotation Attributes - On The Viewmodel Classes Or On The Model?

Mar 20, 2010

I am using a model but as I want to have clean views I use the viewmodel approach which is like a downsized model which I map in my controller actions before sending to the view or getting it back in a HttpPost attributed action.

My question is: where to put the data annotation attributes. On the viewmodel classes or on the model? If I get it clearly the viewmodel annotations are used for the client side generation of validation right?

Do does that mean I have to put data annotations everywhere on both model and viewmodel?

View 11 Replies

MVC :: Creating Table Records With Foreign Key Constraints / Separate Controllers?

Oct 3, 2010

I have multiple tables that are all linked back to a central table with foreign keys. I want to be able to create a new record in table 2, but I'm having trouble because I don't know how to create a new instance of table 2's record while referencing the ID of the record it will be tied to.

EXAMPLE:

Database: Collection
Table: Collection Field 1: id Field 2: name
Table: Book Field 1: collectionId Field 2: id Field 3: name

Now, I don't want to be able to create a book without setting it's collectionID, but I can't figure out how this should be divided in the controllers/views.

Should Book have a controller separate from Collection, or should the Collection controller have a createBook method, separate from it's own create method?

I want to call the createBook method (from it's own controller, or the Collection controller) from the Collection Details view.

When I invoke the create method of Book, how do I create a new Book that is instantiated with the collectionId set from the details view of the Collection item that was listed in the details view?

I should point out, I'm using the entity framework for my model, and I'm definitely new to this.

View 2 Replies

SQL Server :: Creating Store Procedure - How To Insert The Primary Key From The Product_Table Into The foreign Key

Aug 28, 2010

I have two tables. Product_Table with ProductID as the primary key. My other table, ProductSKU_Table which has SKU as the primary key and ProductID as the foreign key. I am trying to create a store procedure to insert into both tables. How do I insert the primary key from the Product_Table into the foreign key of the ProductSKU_Table? This is what I have so far:

[Code]....

View 15 Replies

Security :: Creating Entity Like Classes For MySQL?

Mar 13, 2010

I am starting to build a website project for personal use to learn ASP.NET more in depth. I am wanting to use MySQL as a database since I have a friend thats a MySQL admin guy at his job. But I only have Web Developer Express 2010 and cant get the MySQL plugin to use the Entity Framework with MySQL. So I was wanting to create my own classes for each table in my database with properties related to each column so that I can use something like the following:

[Code]....

I just dont know how to go about doing this or what to search for in Google to find info on this or if this is even possible.

View 1 Replies

ADO.NET :: Capture Updated / Changed Rows In The Entity Data Model Context Classes?

Dec 16, 2010

I am using an Entity Data Model (.edmx) in my project. I am using context.Customers to bind the grid.

Now when the datasource is binded to grid, i made some updates for 2 rows in the database.

Now, how can i capture those 2 updated rows in the context........?

View 1 Replies

DataSource Controls :: Entity FK Setup Via VS2010 / Working Enity Model With Foreign Keys Working?

Jul 9, 2010

Am trying to get a working enity model with foreign keys working but have run into a problem. I have imported 3 tables with content and some data.Lets call these tables geo_countries, geo_counties, geo_municipalities and the FK are:1. geo_county have a column country_id wich corresponds to country_id in geo_country 2. geo_municipality have a column county_id wich correspond to the county_id in geo_county.The problem i have is when i try to get correspondig child items with the following code i run into trouble:

[Code]....

The problem above is that 'test' generates results but not 'test2', wich never return anything. Am i not supposed to be able to do it like i do in 'test2'? I earlier tried to add a child object by replacing ToList() with Add() and that worked. But i cant seem to get anything out of it.

View 4 Replies

ADO.NET :: EF: Creating Database And Model?

Mar 25, 2011

This is a simplified example of what I need. Imagine a person table with several different club tables. Every person can belong to any number of clubs, but must belong to at least one club. The association would be a 1 to zero or one between the person table and each of the club tables.I've created the databases, then the entity model. The associations are all 1 to many, which isn't what I want.

Is there a way to modify the database so that the model is created correctly? I'm still building the project, making lots of changes, and I've had problems with updating the model, so I keep recreating it. Setting up the database correctly would be preferable.I'm trying to follow the quickstart here: [URL]but I'm using the SQL Management Studio designer, and I can't find how to fix the associations I add.

I've been reading about using or not using foreign keys in the model, but it's only confused me more. Can someone help me understand this? I'm starting to write code with what I have, and I'm running into problems. I'm about to start using joins, which means I'm trying to use a hammer instead of a saw because I don't know how to use my saw. I'd rather understand my tools and use them the right way!

View 22 Replies

MVC :: The Name 'Html' Does Not Exist In The Current Context / Not Recongnizing The Html And Model Classes?

Apr 30, 2010

I am working on an ASP.NET MVC 2 project with VS 2010 and out of nothing I get the following errors on my views:

The name 'Html' does not exist in the current context

The name 'Model' does not exist in the current context

It is like it is not recongnizing the MVC Html and Model classes.

I have System.Web.Mvc on my references and on Web.Config I have:

[Code]....

View 2 Replies

MVC :: Model Not Found When Creating A View?

Sep 3, 2010

Trying to create a strongly typed view but the model "that is a class" is not listed in the "View data class" dropdown?

View 3 Replies

Creating An External Link In MVC 2 From Model Properties?

Sep 13, 2010

I'm trying to build a link to an external website using some properties of my model class in my view page, e.g. I want it to render as something like -[URL]where post-id would be pulled from the model (I'm using a strongly typed view model here - I can't use ViewData as there's a list of items being pulled back all of which need seperate links).I tried doing < a href="<% model.PermaLink(); %>">, where PermaLink is just some string, however the value doesn't get picked up.If I try < a href="<%= model.PermaLink %>">, I get an error - CS1502: The best overloaded method match for 'System.IO.TextWriter.Write(char)' has some invalid argumentsIs there any way to do this? I tried adding the runat="server" attribute, however this just linked to my local site and controller/model actions.

View 2 Replies

Creating A View And Updating An Entity Model?

Mar 13, 2011

EDIT: This question is vague and will likely be of little use to anyone. I am awarding internet monies to the gentleman below whom "helped" me.Sorry that the title is a little vague. I am still new to asp mvc & EF. Here is my issue. I have a DB somewhat like this.

Employee
- ID
- Name
- Address
EmployeeJob
- EmployeeID
- JobID
- StartDate
JobTypes
- ID
- JobName

I want a create form that will show all the Employee fields as well as a list of JobTypes for the users to be able to select. Then I will post the results back to the controller and update the DB. I have started looking into custom viewmodels, but am still unsure of exactly how to put that together and get it to work.

View 1 Replies

ADO.NET :: Creating An Entity Data Model Filtered On A Session Variables (C#)

Nov 1, 2010

I'm trying to customize correct displaying of dropdownlists so information shown in comboboxes is relevant to the kind of user logged on (maintaining referential integrity at data level)

e.g.: I have a user already logged on and depending on his profile I'd like to display to this user only the portion of the database that he would be allowed to see. That would mean that he might have acces to an specific subset of data, e.g.: businesstype = "3", loging level = "2", etc.

Is there a way of creating an Ado.Net Entity Data Model filtered on a Session variables as to maintain proper referential integrity at data level?

View 1 Replies

MVC 2 Relation Without Foreign Key With Entity Framework 4 Or With Foreign Key?

Sep 13, 2010

1 - Is it necessary to have foreign key to obtain a Relation in Entity Framework between each entity.?
2 - I have a Language Table and many many table with a foreign key related to the language table. Is it right to add this foreign key or I should do something else ?
Ex:
Language
LangID
LangName

TableTextA
TblAID
TextInfo
LangID

TableTextB
TblBID
TextInfo
LangID

TableTextC
TblCID
TextInfo
LangID
etc ...

View 1 Replies

MVC :: Creating A Class UserDetailsModel.cs In Folder Model./gettting An Error Message In Partial Rendering

Jan 4, 2010

I have created a class UserDetailsModel.cs in my folder model. I have populated a selectedList in the model class.

I have create a view which is both strongly-typed and partial and the view data class is the abc.cs

I have the following code in the view

[Code]....

However, i`m getting the error of
[Code]....
[Code]....

View 10 Replies

Visual Studio :: What Is The Difference Between Designer Classes And T4 Template Generated Classes

Jan 11, 2010

I am new to LINQ. when we drag tables we get a dbml file and designer file.

For example DataClasses1.dbml and DataClasses1.designer.cs.

Once we have them then we can start using our LINQ Queries.

In my company project I do not see this designer files and instead there are .tt files which were used as templates to greate ABC.generated.cs files. Is this same as designer class?

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved