spot7.org logo
Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

Entity Framework - How to create a base entity without generics


How about keep the generic IRepository interface and define another interface as a shortcut for default key (int, guid, etc) Something like this:

public interface IRepository<K,
E>
    where K : IComparable, IComparable<K>
    where E : BaseUniqueEntity<K>
{
}

public interface IRepository<E> :
IRepository<int, E>
    where E : BaseUniqueEntity<int>
{
}

When defining concrete Repository:

public class UserRepository<User>
{
}

Categories : C#

Related to : Entity Framework - How to create a base entity without generics
Entity Framework Error: Specified Include Path Is Not Valid for Virtual Entity
Thanks Ben... Your property is called SiteSettingOption (no s) but you are trying to Include("SiteSettingOptions") (notice the final s). Remove the last s. You can avoid this by using the Include extension that uses lambdas rather than strings this would be something like Include(x => x.SiteSettingOption)

Categories : C#
Entity Framework 6 Email Checking causes 'Attaching an Entity failed' exception
If you want to make sure that there are no duplicate email addresses in the database, including preventing a user from entering a new email address that is already in use, I would solve it this way: try { // Make sure that there is an existing user, since this is an edit var existingUser = db.Users.FirstOrDefault(x => x.ID.Equals(user.Id)); if (existingUser == null) throw n

Categories : C#
LINQ to entity Error: "Unable to create a null constant value of type ''System.Int32[]". Only entity types, enumeration types
It sounds like one of your Int32[] types is null. Try adding a check for that before accessing the .Contains methods: var subjLocal = customerContext.RosterSummaryData_Subject_Local.Where(s => (s.fkRosterSetID == 0) && (statsInfo.TestInstanceIDsList != null && statsInfo.TestInstanceIDsList.Contains(s.fkTestInstanceID)) && (s.fkTestTypeID == statsInf

Categories : C#
Upgrade from Entity Framework 6 to EF 7
There isn't really a way to do this yet. In general we strongly recommend against trying to upgrade an EF6 application to EF7 yet. EF7 is still very much pre-release. We will have some guidance on how to do this when we get closer to RTM. We may provide some tools to help or just some guidance on how to do it.

Categories : Entity Framework
Is it must to use entity framework for db handling in MVC?
No it is not a must. You can implement your database layer. But the thing you need is define Models for MVC: public class MyClass { [Display(Name = "SomeName")] [Required(ErrorMessage = "required")] public int? SomeId { get; set; } //... } for scaffolding. Here is example implementation for Ado.net DataAdapter: public class MyController : Controller { public ActionResult

Categories : Asp Net Mvc
Recently Add
How to call a method in .cs file which was implemented in code behind?
How To Prevent $variables In Restangular Post Request
Windows Phone 8 VoIP SIP Provider
How do we set the AutoCAD layer viewport override values
Load Dependent DLL using reflection
The code is not showing any error but still not displaying data on the datagrid of webform.?
Make an Image that can be flipped over in Unity 4.6
Storing JSON REST response in object
which is more efficient in conditional looping?
WebBrowser control's shortcut keys are not working
C# SQL INSERT not appearing in database table "no errors or exceptions thrown"
c# winfrom treeview class binding
How to Convert string "00h:03m:30s:793ms" to TimeSpan in c#
Calling a parameterized Stored Procedure that returns a value in C#
How to use the SQL statement to transform the data from row record to column record
How to Instantiate Enemy Prefabs Without Knowing the Name
MVC JQuery unobtrusive validation
How to draw at top left of metaFile
How to make Aggregate Root method only accessible for a Domain Event and nothing else.
how to create a list of lists from one list using LINQ?
Ignore user roles in ASP .Net MVC 5 Identity
Xpath Web scrape
add property to interface
How can I make controls added to existing mark-up be automatically hooked up to the code behind?
Too much data in C# windows form combobox, taking 30 sec to show the windows form
Creating a scrolling grid of images using WPF and XAML
PHP equivalent to asp.net routing
LINQ aggregate query
Custom Control won't fill dock correctly
Get ASP.NET Identity Current User In View
© Copyright 2017 spot7.org Publishing Limited. All rights reserved.