Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
717 questions
1 answer
One of the answers was accepted by the question author.
Very slow database creation within Azure function project deployed to Premium plan
Something I have discovered whilst investigating some performance issues is that it is taking entity framework between 6 and 7 seconds to perform the first database operation (the database has 152 tables) when deployed into an Azure Premium Function…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(195.2, 90%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAH%3C/text%3E%3C/svg%3E)
1 answer
One of the answers was accepted by the question author.
set variable of partial class
I have a generated clas (with soapui) I need to pas data to a class order This class has partial classes The code : This is what i try and th error i get .... Dim orders(1) As dpd_label.order orders(1) =…
Entity Framework Core
Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
717 questions
.NET
.NET
Microsoft Technologies based on the .NET software framework.
3,566 questions
ASP.NET
ASP.NET
A set of technologies in the .NET Framework for building web applications and XML web services.
3,394 questions
VB
VB
An object-oriented programming language developed by Microsoft that is implemented on the .NET Framework. Previously known as Visual Basic .NET.
2,642 questions
.NET Runtime
.NET Runtime
.NET: Microsoft Technologies based on the .NET software framework.Runtime: An environment required to run apps that aren't compiled to machine language.
1,136 questions
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(22.400000000000002, 87%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
1 answer
Passing multiple Lists in single parameter
Hi Team I have below requirement. ' There are 3 list with different class type. Example: List<Customer> lst1=new LIst<Customer>(); List<CustomerOrder> lst2=new List<CustomerOredr>(); List<CustomerTransaction>…
Entity Framework Core
Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
717 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,564 questions
asked 2021-02-05T12:37:27.297+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(76.8, 80%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPK%3C/text%3E%3C/svg%3E)
prasad k
86
Reputation points
answered 2021-02-05T16:08:22.58+00:00
Duane Arnold
3,216
Reputation points
1 answer
One of the answers was accepted by the question author.
Sample code Asp.Net Core Datatables Jquery pagination MVVM Services
Hi, I would like a template sample code to get started, with Asp.Net Core CRUD operations with search pagination , master detail pages. Dependency Injection CODE FIRST ENTITY Framework Datatables Jquery I have a solution developed on…
asked 2021-01-29T07:41:29.96+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(182.40000000000003, 69%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMG%3C/text%3E%3C/svg%3E)
murtaza gandhi
81
Reputation points
accepted 2021-02-01T07:43:39.617+00:00
murtaza gandhi
81
Reputation points
1 answer
EF Core 5 many-to-many disconected add/remove without join entity class
EF Core 5 introduced many-to-many by convention, we only need to add the collection navigation property on each side and it works. I know I can query one side of the relationship, add it to the collection property and save it, but this requires an…
asked 2021-01-30T09:27:12.827+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(243.2, 41%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDT%3C/text%3E%3C/svg%3E)
Diego Torres
1
Reputation point
answered 2021-02-01T06:13:50.197+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(19.2, 7.000000000000001%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDZ%3C/text%3E%3C/svg%3E)
Daniel Zhang-MSFT
9,621
Reputation points
2 answers
Receiving chat messages with SignalR
I tested the SignalR solution in Xamarin Forms and .net core backend and it works great: https://montemagno.com/real-time-communication-for-mobile-with-signalr/ However, I am wondering how to keep receiving the messages when the app is in background…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(230.39999999999998, 76%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ET%3C/text%3E%3C/svg%3E)
1 answer
EF Core question regarding relations
I'm building a ticket system. I have two models: User and Ticket. A user can have multiple tickets, and is bound to the ticket via the Customer_Id field. Another user, with the role of Practitioner, can also be assigned to the ticket, via the…
asked 2021-01-20T08:21:36.483+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(137.6, 9%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ETG%3C/text%3E%3C/svg%3E)
Tobias Groeneveld | TendenZ
1
Reputation point
commented 2021-01-26T02:34:04.33+00:00
Daniel Zhang-MSFT
9,621
Reputation points
1 answer
Where to store xamarin forms chat messages
Hi, I need to implement a chat service in my app. Before I get too far on this, I would like to ask for an opinion on where to store chat messages. My options so far are: Twilio chat My own DB There are pros and cons, Twilio chat costs…
asked 2021-01-22T16:31:46.813+00:00
Stesvis
1,041
Reputation points
answered 2021-01-22T16:37:29.997+00:00
Alessandro Caliaro
4,181
Reputation points
1 answer
Creating a generic template in C#
I have researched that C#, as well as its predecessor, C++, enable users to create generic templates. Here are the two source code snippets below: using System; using System.Collections.Generic; using System.Data.OleDb; using System.IO; namespace…
Windows Forms
Windows Forms
A set of .NET Framework managed libraries for developing graphical user interfaces.
1,868 questions
Entity Framework Core
Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
717 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,564 questions
.NET Runtime
.NET Runtime
.NET: Microsoft Technologies based on the .NET software framework.Runtime: An environment required to run apps that aren't compiled to machine language.
1,136 questions
asked 2021-01-20T06:12:29.877+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(153.6, 0%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJ%3C/text%3E%3C/svg%3E)
JohnCTX
636
Reputation points
commented 2021-01-20T08:20:54.047+00:00
Daniel Zhang-MSFT
9,621
Reputation points
0 answers
Error adding migrations: Failed to create CoreCLR, HRESULT: 0x80070057
I'm having an issue whereby I get the error message: Failed to create CoreCLR, HRESULT: 0x80070057 when I use any of the entity framework tooling. I have 2 projects in my solution an ASP.NET Core (.NET 5) Web API and a .NET Standard 2.0 Class Library. …
asked 2021-01-16T04:14:20.537+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(291.2, 67%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
SoggyBottomBoy
6
Reputation points
commented 2021-01-20T08:06:46.907+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(233.6, 98%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERN%3C/text%3E%3C/svg%3E)
Rena Ni - MSFT
2,066
Reputation points
0 answers
Spatial data operations
Hello, I have to migrate some routines written in VBNET in WPF environment on AZURE (webapi net core). In these routines spatial operations such as union, intersection, etc. take place. here is an example: Private Sub example(ByVal sender…
Entity Framework Core
Entity Framework Core
A lightweight, extensible, open-source, and cross-platform version of the Entity Framework data access technology.
717 questions
ASP.NET Core
ASP.NET Core
A set of technologies in the .NET Framework for building web applications and XML web services.
4,336 questions
.NET Runtime
.NET Runtime
.NET: Microsoft Technologies based on the .NET software framework.Runtime: An environment required to run apps that aren't compiled to machine language.
1,136 questions
asked 2021-01-14T10:50:45.65+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(163.2, 43%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMS%3C/text%3E%3C/svg%3E)
Marco Salvatori
191
Reputation points
asked 2021-01-14T10:50:45.65+00:00
Marco Salvatori
191
Reputation points
1 answer
AddDbContext<TContextService, TContextImplementation> don't use DI to create the db
In my project I have created this DbContext derived class: public class SqliteContext : DbContext, IRepoContext { private readonly string _fullname; public SqliteContext() { _fullname = SqliteHelpers.CreateDbFullName(); } …
asked 2021-01-07T10:45:45.907+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(230.39999999999998, 64%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMS%3C/text%3E%3C/svg%3E)
Marco Segurini
21
Reputation points
commented 2021-01-12T09:05:32.047+00:00
Daniel Zhang-MSFT
9,621
Reputation points
2 answers
Linq Error when migrate entityframeworkcore 2.2 to 3.0
Hello, i am migrating from netcore 2.1 to 3.1. of a solution hosted on Azure. I have encountered many errors due to entityframeworkcore 3. Queries such as DBe.BmsListaInfrastructure.Where (e => e.Amministration == Administration) .ToList (); …
asked 2020-12-15T18:27:20.663+00:00
Marco Salvatori
191
Reputation points
answered 2020-12-17T14:25:01.817+00:00
Marco Salvatori
191
Reputation points
4 answers
One of the answers was accepted by the question author.
How to pass datatable from c# class to MSSQL Server stored procedure using Entity Framework Core 5.0.1.
I have a data import application written in .Net Framework to migrate to .Net Core. The application uses a c# class to pass a datatable as an input parameter to a MSSQL server stored procedure. The code in EF6 works fine and is pasted below. …
asked 2020-12-10T12:53:30.587+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 25%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EWS%3C/text%3E%3C/svg%3E)
Williamson, Stephen
21
Reputation points
accepted 2020-12-14T15:19:11.56+00:00
Williamson, Stephen
21
Reputation points
2 answers
Code first Unique constraint on multiple columns
Say I want a Microsoft SQL Server entity as follows: CREATE TABLE [dbo].[Entity]( [ID] [int] IDENTITY(1,1) NOT NULL, [COL1] [nvarchar] NOT NULL, [COL2] [nvarchar] NULL, [COL3] [nvarchar] NULL, CONSTRAINT [PK_Entity] PRIMARY KEY CLUSTERED Then…
asked 2020-12-06T17:22:22.337+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(9.6, 65%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
EuroEager2008
171
Reputation points
commented 2020-12-10T08:00:42.027+00:00
Daniel Zhang-MSFT
9,621
Reputation points
1 answer
One of the answers was accepted by the question author.
DbContext lifetime in desktop app with SQLite
I am creating a small data-driven desktop application using .NET 5 with WPF, ReactiveUI, Dynamic Data, and EF Core 5. The app uses a local SQLite database to store all persisted state, and relies heavily on dependency injection. I would like to share…
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(307.2, 92%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EM%3C/text%3E%3C/svg%3E)
1 answer
One of the answers was accepted by the question author.
Having trouble with foreign key in entity, can't track because the FK is already part of another object
Scenario: I have an entity that is central to the business, let's call it Company. Entity Foo has FK CompanyID, as does entity Bar. If, within the same context, I retrieve Foo and create an instance of Bar, then try…
asked 2020-12-01T00:34:30.12+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 26%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDC%3C/text%3E%3C/svg%3E)
David Craig
31
Reputation points
commented 2020-12-02T01:17:45.293+00:00
Daniel Zhang-MSFT
9,621
Reputation points