Generic Repository With Entity Framework 4.0 Function Imports?

Feb 23, 2010

I have a generic repository that I communicate with my object context with. My object context has function imports that I want to be able to call through my generic repository. Currently I call them through an "Execute" function, but this is not ideal because I have to pass in my function name and parameters as strings which can cause run-time exceptions. My function imports map to complex types.

Is there a way to do something similar to:

Dim rep As IRepository(Of ComplexType)

Dim type As ComplexType = rep.Find(where:=Function(t) t.FunctionImport(parm, parm)).First()

Here is my generic repository as is:

[Code]...

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May 3, 2012

i have issue returning a list in a web method. here is the code

<WebMethod()> _
Public Function getTags(para_parents As String) As List(Of getTypeDetailsByParentName_Result)()
Dim context As New PPEntities

[code]....

the error is

Value of type 'System.Collections.Generic.List(Of SaftyonRoad.getTypeDetailsByParentName_Result)' cannot be converted to '1-dimensional array of System.Collections.Generic.List(Of SaftyonRoad.getTypeDetailsByParentName_Result)'

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Apr 11, 2012

I have the following code:

Private Sub setDropdowns()
Using licensingModel As New licensingEntities

[code]....

My problem is that i dont know how to define the parameter type for the sub. Because they are different types of objectSets being passed each time, I thought IObjectSet(Of EntityObject) would work, but it gives me the following error:

Unable to cast object of type 'System.Data.Objects.ObjectSet1[licensingModel.tblLookup_Country]' to
type
'System.Data.Objects.IObjectSet1[System.Data.Objects.DataClasses.EntityObject]'‌

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.net - VS 2010 Entity Repository Error

Jun 12, 2010

In my project I have it set up so that all the tables in the DB has the property "id" and then I have the entity objects inherit from the EntityBase class using a repository pattern. I then set the inheritance modifier for "id" property in the dbml file o/r designer to "overrides"

Public MustInherit Class EntityBase
MustOverride Property id() As Integer
End Class
Public MustInherit Class RepositoryBase(Of T As EntityBase)

[Code]...

however produces the error "Class member EntityBase.id is unmapped" when i use VS 2010 using the 4.0 framework but I never received that error with the old one.

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May 13, 2010

c# - Are Microsoft Entity Framework and ADO.NET Entity Framework (.edmx) the same?

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Jul 22, 2009

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[Code]....

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Dec 14, 2011

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protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Post>()
.Map(m =>

[code]....

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Asp.net - Using ExecuteQuery() With Entity Framework, Entity Class

Jan 16, 2011

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Dim db as New TestModel.TestEntity
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From the microsoft example site, they use an entity class called Customers, but I don't understand what that means.

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Feb 18, 2010

My company is tossing around the idea of using the Entity Framework when it comes out with .NET 4. We are currently a VB.NET shop, but have some interest in switching to C#.Is there any major arguments for or against such a move?Does EF with C# hold any advantages in performance, coding ease, etc over VB.NET?

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Apr 17, 2009

I am a newbie. I have been able to Add new entities where there is a One-To-Many Relation. I am having a problem (don't Know how to do it) adding a new Entity when the relation is using Many-To-Many. In my EDM I have:

[Code]....

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ADO.NET Entity Framework Tools?

Apr 16, 2011

I downloaded the VB 2010 Express software, the total files that we included in the download was 15, but it only loaded up 12 of these files. The following downloads did not get loaded as follows:MS Visual Studio 2010 ADO.NET Entity Framework Tools

MS HelpViewe 1.0 x64

I tried reinstalling the downloads that did not using the VB Express 2010 setup, but they do no appear on the list of downloads, only the SP1 for MS SQL Server 2008 Express Server (x64).Do I require the downloads that did not load.

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Asp.net Mvc - Entity Framework With Database?

Apr 21, 2012

Here are the entities that i have...

Public Class Account
Public Property AccountId As integer
Public Property AccountDescription As String
Public Property Transactions As List(Of Transaction)
End Class

[Code]...

i would like to make it suc that when i do "db.Account.find(1)" for example it also loads in the list of all transactions which have the coresponding AccountId. I'm not too sure what type of relationship this is?? anyway, right now i can do

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Entity Data Framework 101

Sep 28, 2011

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Entity Framework VB Join

Feb 28, 2012

I'm trying to learn EF in visual basic. I'm struggling with finding any easy to understand simple tutorial of how to do inner joins.

This is the SQL that i'm trying to replicate in EF:

SELECT Quote.LockedDateTime, IncommingQuoteStatus.StatusDesc, Users.FirstName
+ ' ' + Users.LastName AS UserName
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[Code].....

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Feb 8, 2011

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I have a data structure where a family has several family members, each of which can have more than one entry in the income table (on different registration dates) and can have more than one entry in the healthconditions table.

[Code]...

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Jul 7, 2011

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[Code]...

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Public Class Part
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[code].....

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Apr 6, 2011

I have the following code:

Private Sub btnReserve_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnReserve.Click
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[Code].....

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Dec 20, 2011

I am trying to make an MVC index view with bulk editing functionality, but can't seem to get it working. I have replaced the Html.DisplayFor with HTML.editorfor items, and put the whole table in a form which submits back to my index function. I have tried various ideas, but currently my function is

[Code]...

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Jan 15, 2009

I am just starting out with ADO.net Entity Framework I have mapped two tables together and receive the following error:

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C# - Column Sequence And The Entity Framework?

Dec 28, 2009

So, when you bind a collection of Entity objects to a grid component, the grid displays those fields in the sequential order they are found in the SQL Table they came from. This shows that the ordinal position of the fields are associated with their corresponding entity properties... somehow or other.

So here is the question: How can I obtain the table field ordinal position by reflecting over an Entity Framework Entity's properties? Let me tell you what I know and what I have tried. Apparently, each data field property in an EF Entity is decorated with a System.Runtime.Serialization.DataMemberAttribute. This attribute appears to have an Order property. However, I have discovered that this property does not contain what I am looking for. The value for all Data Properties in an Entity seems to be -1. What ever order is, it isn't ordinal position.

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C# - Entity Framework & Stored Procedures?

Nov 5, 2010

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It generates code similar to:

EXEC sp_executesql N'SELECT * FROM Product'[code].....

If it's not possible to do that using SingleOrDefault I'm fine with that. I'd much rather have the following:

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Is this something that is normally done or do most people just have it dynamically generate the SQL?

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Mar 12, 2011

I'm brand new to the Entity Framework and trying to learn all it can offer. I'm currently working my way through the MVC Music Store tutorial which includes the following code:

public ActionResult Browse(string genre) {
// Retrieve Genre and its Associated Albums from database
var genreModel = storeDB.Genres.Include("Albums")
.Single(g => g.Name == genre);
return View(genreModel);
[Code] .....

The problem is I'm getting the following exception:
Invalid column name 'GenreGenreId'.
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Here is the source for my classes:
Album.vb
Public Class Album
Private _title As String
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Private _AlbumId As Int32
[Code] .....

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Mar 4, 2009

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Aug 24, 2011

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Public Class Client
Inherits ModelBase
<Key(), Required()>
Public Property ClientID As Decimal
<Required(), StringLength(50)>
Public Property ClientCode As String .....

And the error I am getting is:
One or more validation errors were detected during model generation: System.Data.Edm.EdmAssociationConstraint: : The types of all properties in the Dependent Role of a referential constraint must be the same as the corresponding property types in the Principal Role. The type of property 'ClientCode' on entity 'ClientLocation' does not match the type of property 'ClientID' on entity 'Client' in the referential constraint 'ClientLocation_Client'.

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Oct 15, 2011

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I try to declare the context as:

Dim yclcontext as new YCLEntites

I have also tried going into design mode and dragging from the toolbox but when I select my named connection it gives me the following error:

The metadata specified in the connection string could not be loaded. Consider rebuilding the web project to build assemblies that may contain metadata. The following error(s) occurred: Unable to load the specified metadata resource.

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Mar 30, 2009

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