Shawn  Durgan

Shawn Durgan

1602845580

Executing raw SQL with Entity Framework Core 5

Entity Framework Core 5 is an open-source, lightweight, extensible, and a cross-platform ORM. It is easy to apply and it makes database access super simple. However, sometimes working with tables and views is just not enough. How to execute raw SQL script with Entity Framework Core 5? Let’s find out.

Running the raw SQL

Running a SQL without carrying about the result is quite easy. Have a look at this example:

1

await primeDbContext . Database . ExecuteSqlInterpolatedAsync ( < br /> $ “UPDATE Profiles SET Country = ‘Poland’ WHERE LEFT(TelNo, 2) = ‘48’ AND Id > {minimalProfileId}” );

This SQL updates the Country based on TelNo column for profiles with Id higher then the one provided. It is just a few lines of code and it works perfectly! It also shows how we can pass a parameter to SQL, but you also can format it with curly braces.

Executing a stored procedure

A stored procedure is a perfect example of a SQL, that you might want to run directly on the database, but keep SQL on the database side. Let’s say you already have a stored procedure named UpdateProfilesCountry with one parameter. If you would just like to execute it, you could simply have a code like this:

1

2

await primeDbContext . Database . ExecuteSqlInterpolatedAsync (

$ “UpdateProfilesCountry {minimalProfileId}” );

You don’t need a DbSet to map the results, so you can use DbContext.Database.ExecuteSqlRawAsync and pass parameters if you’d like to.

If you’d like to get the full picture, read the separate article: Execute a stored procedure with Entity Framework Core 5.

#asp.net core for .net 5 & ef core 5 #ef core 5 #primehotel #sql

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Executing raw SQL with Entity Framework Core 5
Cayla  Erdman

Cayla Erdman

1594369800

Introduction to Structured Query Language SQL pdf

SQL stands for Structured Query Language. SQL is a scripting language expected to store, control, and inquiry information put away in social databases. The main manifestation of SQL showed up in 1974, when a gathering in IBM built up the principal model of a social database. The primary business social database was discharged by Relational Software later turning out to be Oracle.

Models for SQL exist. In any case, the SQL that can be utilized on every last one of the major RDBMS today is in various flavors. This is because of two reasons:

1. The SQL order standard is genuinely intricate, and it isn’t handy to actualize the whole standard.

2. Every database seller needs an approach to separate its item from others.

Right now, contrasts are noted where fitting.

#programming books #beginning sql pdf #commands sql #download free sql full book pdf #introduction to sql pdf #introduction to sql ppt #introduction to sql #practical sql pdf #sql commands pdf with examples free download #sql commands #sql free bool download #sql guide #sql language #sql pdf #sql ppt #sql programming language #sql tutorial for beginners #sql tutorial pdf #sql #structured query language pdf #structured query language ppt #structured query language

Shawn  Durgan

Shawn Durgan

1602845580

Executing raw SQL with Entity Framework Core 5

Entity Framework Core 5 is an open-source, lightweight, extensible, and a cross-platform ORM. It is easy to apply and it makes database access super simple. However, sometimes working with tables and views is just not enough. How to execute raw SQL script with Entity Framework Core 5? Let’s find out.

Running the raw SQL

Running a SQL without carrying about the result is quite easy. Have a look at this example:

1

await primeDbContext . Database . ExecuteSqlInterpolatedAsync ( < br /> $ “UPDATE Profiles SET Country = ‘Poland’ WHERE LEFT(TelNo, 2) = ‘48’ AND Id > {minimalProfileId}” );

This SQL updates the Country based on TelNo column for profiles with Id higher then the one provided. It is just a few lines of code and it works perfectly! It also shows how we can pass a parameter to SQL, but you also can format it with curly braces.

Executing a stored procedure

A stored procedure is a perfect example of a SQL, that you might want to run directly on the database, but keep SQL on the database side. Let’s say you already have a stored procedure named UpdateProfilesCountry with one parameter. If you would just like to execute it, you could simply have a code like this:

1

2

await primeDbContext . Database . ExecuteSqlInterpolatedAsync (

$ “UpdateProfilesCountry {minimalProfileId}” );

You don’t need a DbSet to map the results, so you can use DbContext.Database.ExecuteSqlRawAsync and pass parameters if you’d like to.

If you’d like to get the full picture, read the separate article: Execute a stored procedure with Entity Framework Core 5.

#asp.net core for .net 5 & ef core 5 #ef core 5 #primehotel #sql

Shawn  Durgan

Shawn Durgan

1602765469

Executing raw SQL with Entity Framework Core 5

Entity Framework Core 5 is an open-source, lightweight, extensible, and a cross-platform ORM. It is easy to apply and it makes database access super simple. However, sometimes working with tables and views is just not enough. How to execute raw SQL script with Entity Framework Core 5? Let’s find out.

Running the raw SQL

Running a SQL without carrying about the result is quite easy. Have a look at this example:

1

await primeDbContext . Database . ExecuteSqlInterpolatedAsync ( < br /> $ “UPDATE Profiles SET Country = ‘Poland’ WHERE LEFT(TelNo, 2) = ‘48’ AND Id > {minimalProfileId}” );

This SQL updates the Country based on TelNo column for profiles with Id higher then the one provided. It is just a few lines of code and it works perfectly! It also shows how we can pass a parameter to SQL, but you also can format it with curly braces.

Executing a stored procedure

A stored procedure is a perfect example of a SQL, that you might want to run directly on the database, but keep SQL on the database side. Let’s say you already have a stored procedure named UpdateProfilesCountry with one parameter. If you would just like to execute it, you could simply have a code like this:

1

2

await primeDbContext . Database . ExecuteSqlInterpolatedAsync (

$ “UpdateProfilesCountry {minimalProfileId}” );

You don’t need a DbSet to map the results, so you can use DbContext.Database.ExecuteSqlRawAsync and pass parameters if you’d like to.

If you’d like to get the full picture, read the separate article: Execute a stored procedure with Entity Framework Core 5.

#asp.net core for .net 5 & ef core 5 #ef core 5 #primehotel #sql

Hertha  Mayer

Hertha Mayer

1602668764

Announcing Entity Framework Core (EF Core) 5 RC2

Today, the Entity Framework Core team announces the second release candidate (RC2) of EF Core 5.0. This is a feature complete release candidate of EF Core 5.0 and ships with a “go live” license. You are supported using it in production. This is a great opportunity to start using EF Core 5.0 early while there is still time to fix remaining issues. We’re looking for reports of any remaining critical bugs that should be fixed before the final release.

Prerequisites

EF Core 5.0 will not run on .NET Standard 2.0 platforms, including .NET Framework.

How to get EF Core 5.0 Release Candidate 2

EF Core is distributed exclusively as a set of NuGet packages. For example, to add the SQL Server provider to your project, you can use the following command using the dotnet tool:

dotnet add package Microsoft.EntityFrameworkCore.SqlServer --version 5.0.0-rc.2.20475.6

#.net #.net core #.net framework #asp.net #c# #entity framework #announcement #asp.net core #entity framework core

Einar  Hintz

Einar Hintz

1602560783

jQuery Ajax CRUD in ASP.NET Core MVC with Modal Popup

In this article, we’ll discuss how to use jQuery Ajax for ASP.NET Core MVC CRUD Operations using Bootstrap Modal. With jQuery Ajax, we can make HTTP request to controller action methods without reloading the entire page, like a single page application.

To demonstrate CRUD operations – insert, update, delete and retrieve, the project will be dealing with details of a normal bank transaction. GitHub repository for this demo project : https://bit.ly/33KTJAu.

Sub-topics discussed :

  • Form design for insert and update operation.
  • Display forms in modal popup dialog.
  • Form post using jQuery Ajax.
  • Implement MVC CRUD operations with jQuery Ajax.
  • Loading spinner in .NET Core MVC.
  • Prevent direct access to MVC action method.

Create ASP.NET Core MVC Project

In Visual Studio 2019, Go to File > New > Project (Ctrl + Shift + N).

From new project window, Select Asp.Net Core Web Application_._

Image showing how to create ASP.NET Core Web API project in Visual Studio.

Once you provide the project name and location. Select Web Application(Model-View-Controller) and uncheck HTTPS Configuration. Above steps will create a brand new ASP.NET Core MVC project.

Showing project template selection for .NET Core MVC.

Setup a Database

Let’s create a database for this application using Entity Framework Core. For that we’ve to install corresponding NuGet Packages. Right click on project from solution explorer, select Manage NuGet Packages_,_ From browse tab, install following 3 packages.

Showing list of NuGet Packages for Entity Framework Core

Now let’s define DB model class file – /Models/TransactionModel.cs.

public class TransactionModel
{
    [Key]
    public int TransactionId { get; set; }

    [Column(TypeName ="nvarchar(12)")]
    [DisplayName("Account Number")]
    [Required(ErrorMessage ="This Field is required.")]
    [MaxLength(12,ErrorMessage ="Maximum 12 characters only")]
    public string AccountNumber { get; set; }

    [Column(TypeName ="nvarchar(100)")]
    [DisplayName("Beneficiary Name")]
    [Required(ErrorMessage = "This Field is required.")]
    public string BeneficiaryName { get; set; }

    [Column(TypeName ="nvarchar(100)")]
    [DisplayName("Bank Name")]
    [Required(ErrorMessage = "This Field is required.")]
    public string BankName { get; set; }

    [Column(TypeName ="nvarchar(11)")]
    [DisplayName("SWIFT Code")]
    [Required(ErrorMessage = "This Field is required.")]
    [MaxLength(11)]
    public string SWIFTCode { get; set; }

    [DisplayName("Amount")]
    [Required(ErrorMessage = "This Field is required.")]
    public int Amount { get; set; }

    [DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}")]
    public DateTime Date { get; set; }
}

C#Copy

Here we’ve defined model properties for the transaction with proper validation. Now let’s define  DbContextclass for EF Core.

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