Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged Entity
0
votes
679
views
1
answer
entity framework - SQL Azure EF Database First Connection String in Azure Management Portal
I have a site running n Azure, which uses EF Database First model. If I embed the connection string in the web. ... to do it via the portal. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
666
views
1
answer
entity framework - System.NotSupportedException: Unable to determine the provider name for provider factory of type 'System.Data.SqlClient.SqlClientFactory'
I am using EF6 with Asp.net core and I am getting error when I call to db through ... .InvokeActionMethodAsync()} System.NotSupportedException See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
860
views
1
answer
entity framework - Use Linq query to compare date only with DateTime field
I need to compare just the date only in a Linq query that involves a datetime field. However, the syntax ... SymNumber == symNumber select a; See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
592
views
1
answer
entity framework 4 - How to get the latest date inserted from the table with Linq to entities
how to retrieve the latestdate inspected from a column In our app a user can inspect an item and when it ... and col name is LastdateInspected See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
1.4k
views
1
answer
entity framework - EF - DistinctBy on an IQueryable?
Say I have this where I want to get every person in group 42, but I want to get an IQueryable of each ... subject of a query to the repository. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
972
views
1
answer
entity framework - The property X is of type Y which is not supported by current database provider
I am really new to EF (using EF core 2.1) and have been following a bunch of tutorials so far, but now I ... there is a good reason to do so See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
895
views
1
answer
entity framework - stuck in EF migration limbo
i have somehow gotten my EF5 project into a state where I can't proceed. When I do an 'update-database' ... ? (beyond switching to NHibernate?) See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
727
views
1
answer
entity framework 4 - LINQ Query - how sort and filter on eager fetch
How do I do a eager query of a parent child relationship that: filters a on child fields sorts on both ... [1].children = IEnumerable<Child> See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
563
views
1
answer
entity framework - Efficient way of checking if many-to-many relationship exists in EF4.1
I have a many-to-many relationship between two entities - Media and MediaCollection. I want to check if a certain Media ... index, item); } } } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
573
views
1
answer
entity framework - Programmatic data transformation in EF5 Code First migration
Is it possible to do any type of programmatic data transformation in Entity Framework 5 Code First migrations? ... the old table Ingredient. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
522
views
1
answer
entity framework - Exception in Expression Trees
This is my model: - Business - BusinesType - FK - Categories (*) - FK - Branch (*) - BranchType - ... collection property it's meant to expose. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
607
views
1
answer
entity framework - Change Fluent API mapping dynamically
Our project uses Entity Framework Code First. We wish to have an instance where a very simple POCO represents ... table via the ModelBuilder. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
629
views
1
answer
entity framework core - ASP.NET 5/EF7 connection string in web.config?
In ASP.Net 4.5 I could put my connection string in the web.config as to take advantage of web.config ... EF look there for the strings? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
1.1k
views
1
answer
entity framework - EF connection string as DbContext constructor argument
I have seen some code sample that put an entity framework connection string as a constructor argument when creating a ... .5 entity framework 5. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
852
views
1
answer
entity framework 6 - How to enable migrations (EF6) in an asp.net 5 project?
I created a new class library (package) project (prior to VS 2015 RC used the even worse name of asp. ... even though EF6 has been referenced? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
722
views
1
answer
entity framework - LINQ to Entities does not recognize the method 'System.DateTime AddSeconds(Double)' method, and this method cannot be translated into
I receive this error on base {System.SystemException} = {"LINQ to Entities does not recognize the method 'System. ... idea how to solve it? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
689
views
1
answer
entity framework - where is context.Entry()?
I wrote my own context by reading this article and many others, but none of theme explains where is this context.Entry( ... { get; set; } } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
631
views
1
answer
entity framework - Implementing Repository pattern and doing Tests
I have read almost all articles about Repository pattern and different implementations of it. Many of them judged ... added the first question. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
706
views
1
answer
entity attribute value - Magento 1 - get category ID from product ID
In magento how to get the category id of each product from its product ID. $items = $request->getAllItems(); $c ... ID. I want its category ID. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
607
views
1
answer
entity framework core - Delete loaded and unloaded objects by ID in EntityFrameworkCore
I have a method that receives an IEnumerable<Guid> of IDs to objects I want to delete. One suggested method is ... order to delete the objects. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
594
views
1
answer
entity framework 4 - ASP.NET MVC3 - Data Annotations with EF Database First (ObjectContext, DbContext)
How can we use Data Annotations for models if the models are generated with 4.1 ADO.NET DbContext Generator or something else? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
724
views
1
answer
entity framework - EF code-first: How to load related data (parent-child-grandchild)?
I have this entity: public class DynamicPage { public int PageId { get; set; } public int Order { get; set; } ... 3) if any? Thanks to help. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
772
views
1
answer
entity framework - Given LINQ to Entities does not support "Custom methods" how do you stay DRY?
I have run into this problem: Custom Methods & Extension Methods cannot be translated into a store expression ... with LINQ to Entities? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
756
views
1
answer
entity framework - Get sum of two columns in one LINQ query without grouping
I want to sum up three different fields of a table in one query. I want a linq equivalent of this T- ... Any suggestions? Thanks for your time. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
536
views
1
answer
entity framework - Code First adding to collections? How to use Code First with repositories?
EDIT: This happen only on larger scale projects with repositories. Is there anybody using EF4 with CodeFirst approach ... SaveChanges(); } } See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
606
views
1
answer
entity framework 4.1 - Can I specify a discriminator column with a table-per-type mapping?
I have a class hierarchy that I want to map across several tables using Entity Framework 4.1 Code First. It's ... with a table-per-type mapping? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
789
views
1
answer
entity framework - EF 4.1 CF: CREATE DATABASE permission denied in database 'master'
Entity Framework 4.1 Code First works great with SQLEXPRESS on localhost. However, I'm now ready to connect ... outside a particular database) See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
0
votes
690
views
1
answer
entity framework - DataContractSerializer: How to serialize classes/members without DataContract/DataMember attributes
DataContractSerializer requires classes and members to be marked with the DataContract and DataMember attributes. However, in ... /13/50934.aspx See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
entity
Page:
« prev
1
2
3
4
5
6
7
...
15
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] ubuntu - When running "rails server" why does my localhost refuse to connect on both Chrome and Firefox?
[2] node.js - Funny Characters Before and at End of Logs with Google Cloud Winston Logging (Nodejs)
[3] 关于多线程中,线程获取的究竟是谁的锁
[4] windows - Environment variables not working properly
[5] javascript - how to find if key value pair exists in json object using switch statement
[6] 小程序 navigateTo:fail webview count limit exceed
[7] php - How can i change the image format to WebP
[8] java - How to null check and return a value in a generic way
[9] azure - ARM Template trying to merge objects
[10] Java jdbc 无法加载 mysql 驱动
2.1m
questions
2.1m
answers
60
comments
56.8k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...