ef-core-2.1

问题 I'm making a small web app which currently is using sqlite + EF Core 2.1 for storing data. Are there any solutions that I can sandbox my sqlite database file ? I mean to load my sqlite database with its data and triggers from my physical db file into memory. Everytime when I turn on/off VS debugger, database will be refreshed with my existing data in physical file . Thank you, 回答1: Here's some code that literally does what you asked: var sandboxConnection = new SqliteConnection("Data Source=

问题 I am trying to implement server-side filtering in ag-grid (infinite scrolling mode). Problem is - documentation about filterModel is very obscure and I am slowly discovering things using console.log which is getting frustrating because of different information filterModel can provide which also makes mapping to server side classes very tedious. Has anyone found proper documentation about filterModel? Also, has anyone found helper methods for ASP.NET Core and EF Core to apply this filterModel?

问题 I am trying to implement server-side filtering in ag-grid (infinite scrolling mode). Problem is - documentation about filterModel is very obscure and I am slowly discovering things using console.log which is getting frustrating because of different information filterModel can provide which also makes mapping to server side classes very tedious. Has anyone found proper documentation about filterModel? Also, has anyone found helper methods for ASP.NET Core and EF Core to apply this filterModel?

问题 Here are the steps to reproduce. The below program copies 10,000 rows from one SQL table to another using .Net Core console app and EF Core. The program inserts records in 100 batches, and (this is important!) it creates a new instance of DbContext for each insert. 1) Create SQL Server database, and the "Froms" and "Tos" tables: create table Froms ( Id int identity(1, 1) not null, Guid [uniqueidentifier] not null, constraint [PK_Froms] primary key clustered (Id asc) ) go create table Tos ( Id

问题 Here are the steps to reproduce. The below program copies 10,000 rows from one SQL table to another using .Net Core console app and EF Core. The program inserts records in 100 batches, and (this is important!) it creates a new instance of DbContext for each insert. 1) Create SQL Server database, and the "Froms" and "Tos" tables: create table Froms ( Id int identity(1, 1) not null, Guid [uniqueidentifier] not null, constraint [PK_Froms] primary key clustered (Id asc) ) go create table Tos ( Id

问题 I have a stored procedure like this: CREATE PROCEDURE PLogin @pin varchar(50), @ipaddress varchar(50) AS BEGIN SET NOCOUNT ON; //Some code here ... SELECT * FROM [dbo].[QRelaceUzivatele_Aktivni] WHERE Pin = @pin AND IPAdresa=@ipaddress END I need to execute it from ASP MVC using EF Core 2.1. I have used the approach mentioned here. I have a custom C# class AktivniRelaceUzivatele that maps the fields of the QRelaceUzivatele_Aktivni view. public class AktivniRelaceUzivatele { int ProvozID { get

问题 I'm new to Entity Framework and I'm learning atm with the Pluralsight courses from Julie Lerman. I'm watching the 2nd course "Entity Framework Core 2: Mappings" but I'm using EF Core 2.1. Edit: So I decided comment everything out and follow the course again and it is working now BUT the generated migration in generating 2 columns that shouldn't be there: protected override void Up(MigrationBuilder migrationBuilder) { migrationBuilder.AddColumn<DateTime>( name: "BetterName_Created", table:

问题 I am using Entity Framework Core in an Xamarin.iOS application. In my core project that contains code (.netstandard 2.0) that is shared between the iOS application and other applications, I would like to know if a migration is needed so that I can perform some other operations as well. Here is the context: public void Initialize() { using (var dbContext = new MyDbContext(m_dbContextOptions)) { --> bool isNeeded = demoTapeDbContext.Database.IsMigrationNeeded() demoTapeDbContext.Database

问题 this is my appsettings.json "ConnectionStrings": { "Circolari": "Server=abcde;Database=Circolari;Trusted_Connection=True;" } and this is my startup.cs public Startup(IConfiguration configuration, IHostingEnvironment env) { Configuration = configuration; IConfigurationBuilder configurationBuilder = new ConfigurationBuilder() .SetBasePath(env.ContentRootPath) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true); Configuration = configurationBuilder.Build(); } // This method

问题 this is my appsettings.json "ConnectionStrings": { "Circolari": "Server=abcde;Database=Circolari;Trusted_Connection=True;" } and this is my startup.cs public Startup(IConfiguration configuration, IHostingEnvironment env) { Configuration = configuration; IConfigurationBuilder configurationBuilder = new ConfigurationBuilder() .SetBasePath(env.ContentRootPath) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true); Configuration = configurationBuilder.Build(); } // This method