DbUp + Sql Server + EF Core 6 + DB First + Database First + Dapper

[Table("Test")]
public class TestEntity{
[Key]
[Column("id")]
[MaxLength(36)]
public string ID{get;set;}
[Column("text")]
[MaxLength(50)]
public string Text{get;set;}
[Column("count")]
public int? Count{get;set;}
……
}

public class DataContext : DbContent {
public DataContext(DbContextOptions options) : base(options) {}
public DbSet<TestEntity> TestEntities {get;set;}
}

Microsoft.Extensions.DependencyInjection(6.0.0)
Oracle.EntityFrameworkCore(2.19.60)
Microsoft.EntityFrameworkCore.Design(2.2.6)

public void ConfigureServices(IServiceCollection Services) {
……
services.AddDbContext<DataContext>(options.UseOracle(Configuration.GetConnectionString("OracleConnectionString")));
……
}

Add-Migration AddTestEntity
Update-Database

.NET Framework

NuGet Gallery | Oracle.ManagedDataAccess 21.5.0

Oracle.ManagedDataAccess.Client

Dapper

ASP.NET Core Web API with Oracle Database and Dapper | Mukesh Kumar

.NET Core + EF Core + DbContext

Entity Framework Core creating model from existing Oracle database - Stack Overflow

Oracle.EntityFrameworkCore
Oracle.ManagedDataaccess.Core
Microsoft.EntityFrameworkCore
Microsoft.EntityFrameworkCore.Tools

PM> Scaffold-DbContext "User Id=test;Password=test;Data Source=localhost:1521/orcl;" 

-Provider Oracle.EntityFrameworkCore

-OutputDir Models 

-Context TestDbContext 

-Tables USER

sql - How to create id with AUTO_INCREMENT on Oracle? - Stack Overflow

c# - How to connect to an Oracle database Connection from .Net Core - Stack Overflow

using Oracle.ManagedDataAccess.Client;

public void Execute(string queryString, string connectionString)
{
    using (OracleConnection connection = new OracleConnection(connectionString))
    {
        OracleCommand command = new OracleCommand(queryString, connection);
        command.Connection.Open();
        command.ExecuteNonQuery();
    }
}

ORACLE ID AUTO INCREMENT

I've used sequences and triggers - it was the only solution that seemed to work.

sql - How to create id with AUTO_INCREMENT on Oracle? - Stack Overflow

ovidiubuligan/EntityFramework_Oracle_sample: A minimal sample project with c# ,entity framework, and oracle 11g (github.com)

ASP.NET Core Web API with Oracle Database and Dapper

This article will focus on how to create Asp.Net Core Web API to get data from Oracle database using Dapper ORM. First thing, here we are not using SQL, because of so many articles available on Internet where mostly SQL server is using for demonstration. So, we think, let write one article where we will use Oracle as a database. To reduce the complexity of database access logic we are using Dapper ORM. So, let's move to practical demonstration.

Create Asp.Net Core Web API Project

To create a new project in Asp.Net Core Web API. Just open Visual Studio 2017 version 15.3 and we have to follow below steps.

Go to File menu and click to New and then choose Project.
From the New Project window, first, you have to choose .Net Framework 4.6 or above version and then from the left panel, choose Visual C# and then .Net Core.
From the right panel, choose “Asp.Net Core Web Application” and provide the save location where you want to save project and click OK.
From the next windows, which will provide you different kinds of the template, you have to choose Web API.

Now click to OK. It will take few minutes to configure Asp.Net Core Web API project.

Setup Oracle Table and Stored Procedures

To create database and tables for this demonstration, we are using Oracle Developer Tools. It is very lightweight and flexible which help us to work with database smoothly.

As per Oracle

Oracle SQL Developer is a free, integrated development environment that simplifies the development and management of Oracle Database in both traditional and Cloud deployments. SQL Developer offers complete end-to-end development of your PL/SQL applications, a worksheet for running queries and scripts, a DBA console for managing the database, a reports interface, a complete data modeling solution, and a migration platform for moving your 3rd party databases to Oracle.

Create a database name call it "TEST_DB" and inside that create a table name as "EMPLOYEE". You can use the following syntax to create the table inside "TEST_DB" database.

  CREATE TABLE "TEST_DB"."EMPLOYEE" 
   (	
    "ID" NUMBER(10,0) GENERATED BY DEFAULT ON NULL AS IDENTITY MINVALUE 1 MAXVALUE 9999999999999999999999999999 INCREMENT BY 1 START WITH 100 CACHE 20 NOORDER  NOCYCLE , 
	"NAME" VARCHAR2(255 BYTE), 
	"SALARY" NUMBER(10,0), 
	"ADDRESS" VARCHAR2(500 BYTE)
   ) SEGMENT CREATION IMMEDIATE 
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 
 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "TEST_DATA" ;

Need to add some dummy records inside the tables, so that we can directly get the data from PostMan. So, we are adding four records here as follows.

Insert into TEST_DB.EMPLOYEE (ID,NAME,SALARY,ADDRESS) values (100,'Mukesh',20000,'India');
Insert into TEST_DB.EMPLOYEE (ID,NAME,SALARY,ADDRESS) values (101,'Rion',28000,'US');
Insert into TEST_DB.EMPLOYEE (ID,NAME,SALARY,ADDRESS) values (102,'Mahesh',10000,'India');
Insert into TEST_DB.EMPLOYEE (ID,NAME,SALARY,ADDRESS) values (103,'Banky',20000,'India');

Now its time to create one SP which will bring the list of employees records. Here we are using Cursor for returning list of data as an output parameter.

CREATE OR REPLACE PROCEDURE "TEST_DB"."USP_GETEMPLOYEES" (
    EMPCURSOR OUT SYS_REFCURSOR
)
AS
Begin
Open EMPCURSOR For
SELECT ID, NAME, SALARY,ADDRESS FROM Employee;
End;

Now going to create one SP which will get the individual record for an employee based on their employee id.

CREATE OR REPLACE PROCEDURE "TEST_DB"."USP_GETEMPLOYEEDETAILS" 
(
  EMP_ID IN INT,
  EMP_DETAIL_CURSOR OUT SYS_REFCURSOR  
) AS 
BEGIN
    OPEN EMP_DETAIL_CURSOR FOR
    SELECT ID, NAME, SALARY,ADDRESS FROM Employee WHERE ID = EMP_ID;
END;

Install Dapper ORM

Open "Package Manager Console" from the "Nuget Package Manager" of Tools menu and type following command and press enter to install dapper and its dependencies if have.

Install-Package Dapper -Version 1.50.5

After installation, you can check with references section of the project. One reference as "Dapper" has added inside that.

Install Oracle Manage Data Access for Core

As we are using Asp.Net Core Web API application with Oracle and need to access Oracle database from the Core application. To use Oracle database with .Net Core application, we have Oracle library which will help us to manage logic of database access. So, we have to install following package that is beta version.

Install-Package Oracle.ManagedDataAccess.Core -Version 2.12.0-beta2

Add Oracle Connection

Now we have everything ready related to the database like the database, tables, and SPs etc. To access the database from Web API, we have to create connection string as usual inside the "appsettings.json" file.

{
  "Logging": {
    "IncludeScopes": false,
    "Debug": {
      "LogLevel": {
        "Default": "Warning"
      }
    },
    "Console": {
      "LogLevel": {
        "Default": "Warning"
      }
    }
  },
  "ConnectionStrings": {
    "EmployeeConnection": "data source=mukesh:1531;password=**********;user id=mukesh;Incr Pool Size=5;Decr Pool Size=2;"
  }
}

Create Repositories

To keep the separation of concern in mind, we are using Repository here. Create a new folder as "Repositories" inside the Web API project and create an interface as "IEmployeeRepository" and a class as "EmployeeRepository" which will implement to IEmployeeRepository.

namespace Core2API.Repositories
{
    public interface IEmployeeRepository
    {
        object GetEmployeeList();

        object GetEmployeeDetails(int empId);
        
    }
}

Following is the EmployeeRepository class which is implementing IEmployeeRepository. To access configuration, we are injecting IConfiguration in the constructor. So, we have configuration object is ready to use. Apart from that we have GetConnection() method which will get the connection string from the appsettings.json and provide it to OracleConnection to create a connection and finally return connection. As we have implemented "IEmployeeRepository" which have two methods as GetEmployeeDetails and GetEmployeeList.

using Core2API.Oracle;
using Dapper;
using Microsoft.Extensions.Configuration;
using Oracle.ManagedDataAccess.Client;
using System;
using System.Data;


namespace Core2API.Repositories
{
    public class EmployeeRepository : IEmployeeRepository
    {
        IConfiguration configuration;
        public EmployeeRepository(IConfiguration _configuration)
        {
            configuration = _configuration;
        }
        public object GetEmployeeDetails(int empId)
        {
            object result = null;
            try
            {
                var dyParam = new OracleDynamicParameters();
                dyParam.Add("EMP_ID", OracleDbType.Int32, ParameterDirection.Input, empId);
                dyParam.Add("EMP_DETAIL_CURSOR", OracleDbType.RefCursor, ParameterDirection.Output);

                var conn = this.GetConnection();
                if (conn.State == ConnectionState.Closed)
                {
                    conn.Open();
                }

                if (conn.State == ConnectionState.Open)
                {
                    var query = "USP_GETEMPLOYEEDETAILS";

                    result = SqlMapper.Query(conn, query, param: dyParam, commandType: CommandType.StoredProcedure);
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }

            return result;
        }

        public object GetEmployeeList()
        {
            object result = null;
            try
            {
                var dyParam = new OracleDynamicParameters();

                dyParam.Add("EMPCURSOR", OracleDbType.RefCursor, ParameterDirection.Output);

                var conn = this.GetConnection();
                if(conn.State == ConnectionState.Closed)
                {
                    conn.Open();
                }

                if (conn.State == ConnectionState.Open)
                {
                    var query = "USP_GETEMPLOYEES";

                    result = SqlMapper.Query(conn, query, param: dyParam, commandType: CommandType.StoredProcedure);
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }

            return result;
        }

        public IDbConnection GetConnection()
        {
            var connectionString = configuration.GetSection("ConnectionStrings").GetSection("EmployeeConnection").Value;
            var conn = new OracleConnection(connectionString);           
            return conn;
        }
    }
}

public IDbConnection GetConnection()
{
     var connectionString = configuration.GetSection("ConnectionStrings").GetSection("EmployeeConnection").Value;
     var conn = new OracleConnection(connectionString);           
     return conn;
}

To use Oracle datatypes with .Net Core, we are using OracleDyamicParameters class which will provide the list of function to manage Oracle parameters behaviors.

using Dapper;
using Oracle.ManagedDataAccess.Client;
using System.Collections.Generic;
using System.Data;

namespace Core2API.Oracle
{
    public class OracleDynamicParameters : SqlMapper.IDynamicParameters
    {
        private readonly DynamicParameters dynamicParameters = new DynamicParameters();
        private readonly List<OracleParameter> oracleParameters = new List<OracleParameter>();

        public void Add(string name, OracleDbType oracleDbType, ParameterDirection direction, object value = null, int? size = null)
        {
            OracleParameter oracleParameter;
            if (size.HasValue)
            {
                oracleParameter = new OracleParameter(name, oracleDbType, size.Value, value, direction);
            }
            else
            {
                oracleParameter = new OracleParameter(name, oracleDbType, value, direction);
            }

            oracleParameters.Add(oracleParameter);
        }

        public void Add(string name, OracleDbType oracleDbType, ParameterDirection direction)
        {
            var oracleParameter = new OracleParameter(name, oracleDbType, direction);
            oracleParameters.Add(oracleParameter);
        }

        public void AddParameters(IDbCommand command, SqlMapper.Identity identity)
        {
            ((SqlMapper.IDynamicParameters)dynamicParameters).AddParameters(command, identity);

            var oracleCommand = command as OracleCommand;

            if (oracleCommand != null)
            {
                oracleCommand.Parameters.AddRange(oracleParameters.ToArray());
            }
        }
    }
}

Configure Dependencies in Startup.cs

To access the dependencies on the controller or repository classes, we have to configure or we can say register our dependency classes with interfaces inside the ConfigureServices method of Startup class.

using Core2API.Repositories;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Core2API
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddTransient<IEmployeeRepository, EmployeeRepository>();
            services.AddSingleton<IConfiguration>(Configuration);
            services.AddMvc();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseMvc();
        }
    }
}

Add EmployeeController

Now its time to finally create API call in EmployeeControler. First, we have added IEmployeeRepository inside the constructor to use dependencies. Secondly, we have to create API call with Route attribute for both methods.

using Core2API.Repositories;
using Microsoft.AspNetCore.Mvc;

namespace CoreAPI.Controllers
{
    [Produces("application/json")]    
    public class EmployeeController : Controller
    {
        IEmployeeRepository employeeRepository;
        public EmployeeController(IEmployeeRepository _employeeRepository)
        {
            employeeRepository = _employeeRepository;
        }

        [Route("api/GetEmployeeList")]
        public ActionResult GetEmployeeList()
        {
            var result = employeeRepository.GetEmployeeList();
            if (result == null)
            {
                return NotFound();
            }
            return Ok(result);            
        }

        [Route("api/GetEmployeeDetails/{empId}")]
        public ActionResult GetEmployeeDetails(int empId)
        {
            var result = employeeRepository.GetEmployeeDetails(empId);
            if (result == null)
            {
                return NotFound();
            }
            return Ok(result);
        }
    }
}

Now we have ready everything like repository is ready, connection with Oracle database is ready and finally, API call is also ready inside the controller. So, its time to run the API and see the result in PostMan. Just press F5 to run the Web API and open PostMan to test the result.

To test in PostMan, first, choose "Get" as a method and provide the URL to get the list of employee records and click to SEND button which will make a request to our API and get the list of employees which we have added at the beginning while creating the database scripts.

To get the single employee record, just pass the following URL as you can see in the image. You can see here, we want to see the record for employee id 103. Once you send the request, you can see the output something like as below.

Conclusion

So, today we have learned how to create Asp.Net Core Web API project and use Dapper with Oracle database.

I hope this post will help you. Please put your feedback using comment which helps me to improve myself for next post. If you have any doubts please ask your doubts or query in the comment section and If you like this post, please share it with your friends.

ASP.NET Core Web API with Oracle Database and Dapper | Mukesh Kumar

Getting Started with ODP.Net Core (oracle.com) (Source Code)

Entity Framework Code First and Code First Migrations for Oracle Database (Source Code)

Entity Framework Core Database-First Tutorial for .NET Core for Oracle (devart.com)

Connect to Oracle database from .NET core application. – taithienbo

CRUD Operations In ASP.NET Core-3.1 Using Oracle Database (c-sharpcorner.com)

Tags: .NET Core, Oracle, EF Core
Categories: .NET Core | Oracle | EF Core
comment

Using Scaffold-DbContext in EF Core 2.1 with Firebird database

April 17, 2021 22:03

Using Scaffold-DbContext in EF Core 2.1 with Firebird database (edit)

Currently supported by EF Core:

Microsoft SQL Server
SQLite
Postgres (Npgsql)
SQL Server Compact Edition
InMemory (for testing purposes)
MySQL
IBM DB2
Oracle
Firebird

Forcus on:

.NET Core 2.1
EF Core 2.1
Firebird Database
Scaffold-DbContext
Generate Models from Existing Database

Nugets:

.NET Core 2.1
ASP.NET Core MVC 2.1
Install-package EntityFrameworkCore.FirebirdSql -Version 2.1.2.2
Install-package Microsoft.EntityFrameworkCore -Version 2.1.14
Install-package Microsoft.EntityFrameworkCore.Tools -Version 2.1.14

EF 6:

EntityFramework (EF 6)
EntityFramework.SqlServerCompact (EF 6)

EF Core:

Microsoft.EntityFrameworkCore
FirebirdSql.Data.FirebirdClient
FirebirdSql.EntityFrameworkCore.Firebird

.NET Provider for Firebird

Firebird ADO.NET Data Provider
Microsoft SQL Server Compact Data Provider 4.0
More ...

How to build a Connection String?

Class: FirebirdSql.Data.FirebirdClient.FbConnectionStringBuilder

var connectionString = new FbConnectionStringBuilder
{
    Database = "mydb",
    DataSource = "localhost",
    ServerType = FbServerType.Default,
    UserID = "sysdba",
    Password = "masterkey",
}.ToString();

How to use Scaffold-DbContext?

Scaffold-DbContext "character set=none;data source=localhost;initial catalog=mydb;user id=sysdba;password=masterkey;" EntityFrameworkCore.FirebirdSql -Force -OutputDir Models

Scaffold-DbContext "User=xxxx;Password=xxxx;Database=xxxx;DataSource=xxxxxx;Port=3050;Dialect=3;Charset=NONE;Role=;Connection lifetime=15;Pooling=true;MinPoolSize=0;MaxPoolSize=50;Packet Size=8192;ServerType=0;" FirebirdSql.EntityFrameworkCore.Firebird -OutputDir Models

.NET Core CSharp Project (.csproj)

<Project Sdk="Microsoft.NET.Sdk.Web">

 <PropertyGroup>
 <TargetFramework>netcoreapp2.1</TargetFramework>
 </PropertyGroup>

 <ItemGroup>
 <PackageReference Include="EntityFrameworkCore.FirebirdSql" Version="2.1.2.2" />
 <PackageReference Include="Microsoft.AspNetCore.App" />
 <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" />
 <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.1.14" />
 <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.1.14">
 <PrivateAssets>all</PrivateAssets>
 <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 </PackageReference>
 </ItemGroup>

</Project>

Next with .NET Core 3.1:

.NET Core 3.1
ASP.NET Core MVC 3.1
EF Core 3.1

Next with .NET Core 5.0:

.NET Core 5.0
ASP.NET Core MVC 5.0
EF Core 5.0

References:

https://github.com/cincuranet/FirebirdSql.Data.FirebirdClient

https://github.com/ralmsdeveloper/EntityFrameworkCore.FirebirdSQL (HAY HAY HAY)

https://www.programmersought.com/article/6109272731/ (HAY HAY HAY)

https://hoanguyenit.com/create-database-using-code-first-in-aspnet-core-21.html

https://docs.microsoft.com/en-us/aspnet/core/data/ef-mvc/intro?view=aspnetcore-5.0

http://www.binaryintellect.net/articles/87446533-54b3-41ad-bea9-994091686a55.aspx

https://docs.oracle.com/cd/E17952_01/connector-net-en/connector-net-entityframework-core-example.html

Tags: Scaffold-DbContext, EF Core 2.1, EF Core, Firebird
Categories: EF Core 2.1 | EF Core | Scaffold-DbContext | Firebird
comment

Domain Driven Design Implement

March 8, 2021 21:56

Domain Driven Design Implement (edit)

Domain Driven Design Implementation Approach with Generic Repository and UoW Pattern in ASP.NET Core 3.1 Web API and EF Core 5.0

https://www.codeproject.com/Articles/5296451/Domain-Driven-Design-Implementation-Approach-with

https://github.com/tomajexpress/Domain.Driven.Implementation.In.CSharp.NET.Core

Domain Driven Design
Generic Repository
Unit of Work
ASP.NET Core 3.1
ASP.NET Core 3.1 Web API
SQL Server
EF Core 5.0
Database Migrations
DbContext
IUnitOfWork, IMapper (AutoMapper)
Unit Test (NUnit)

Tags: DDD, Generic Repository, UoW, EF Core
Categories: DDD | Generic Repository | UoW | EF Core
comment

Work with EFCore Dapper together in the PostgreSQL database

March 5, 2021 08:42

Work with EFCore Dapper together in the PostgreSQL database (edit)

Install-Package Dapper
Install-Package Npgsql

Install-Package Microsoft.EntityFrameworkCore
Install-Package Microsoft.EntityFrameworkCore.Design
Install-Package Microsoft.EntityFrameworkCore.SqlServer
Install-Package Microsoft.EntityFrameworkCore.Relational
Install-Package Dapper
Install-Package Npgsql
Install-Package System.Data.SqlClient

https://codewithmukesh.com/blog/using-entity-framework-core-and-dapper/ (HAY)

https://github.com/iammukeshm/EFCoreAndDapper

https://dotnetcoretutorials.com/2020/07/11/dapper-with-mysql-postgresql-on-net-core/

https://www.c-sharpcorner.com/article/getting-started-with-postgresql-using-dapper-in-net-core/

https://techbrij.com/asp-net-core-postgresql-dapper-crud/ (HAY)

https://dotnetcorecentral.com/blog/postgresql-and-dapper-in-net-core/

Tags: EFCore, EF Core, EF Core 5.0, Dapper, PostgreSQL
Categories: PostgreSQL | Dapper | EF Core 5.0 | EF Core | EFCore
comment

Oracle + Entity Framework Core

January 31, 2021 09:13

Entity Framework Core + Oracle (edit)

Update Model from Database...
Generate Database from Model...

Entity Framework, LINQ and Model-First for the Oracle Database

https://www.oracle.com/webfolder/technetwork/tutorials/obe/db/dotnet/EntityFrameworkOBE/EntityFrameworkOBE.htm

Entity Framework Core tools reference - .NET Core CLI

https://docs.microsoft.com/en-us/ef/core/cli/dotnet

dotConnect for Oracle

https://www.devart.com/dotconnect/oracle/articles/efcore-database-first-net-core.html

Starting with an existing database

https://www.learnentityframeworkcore.com/walkthroughs/existing-database

Oracle DB First

https://www.devart.com/dotconnect/oracle/articles/efcore-database-first-net-core-entity-developer.html

Oracle Command - Inserting Data in Run Time

https://www.devart.com/dotconnect/oracle/articles/tutorial-command.html

To insert the first row into table dept you can use the following statement:

CREATE TABLE dept:

CREATE TABLE dept (
  deptno INT PRIMARY KEY,
  dname VARCHAR(14),
  loc VARCHAR(13)
)

CREATE TABLE emp:

CREATE TABLE emp (
  empno INT PRIMARY KEY,
  ename VARCHAR(10),
  job VARCHAR(9),
  mgr INT,
  hiredate DATE,
  sal FLOAT,
  comm FLOAT,
  deptno INT REFERENCES dept
)

INSERT INTO dept (deptno, dname, loc) VALUES (10,'Accounting','New York')

The following code fragment executes the query:

OracleConnection conn = new OracleConnection("User Id=scott;Password=tiger;Server=OraServer;");
OracleCommand cmd = new OracleCommand();
cmd.CommandText = "INSERT INTO dept (deptno, dname, loc) VALUES (10,'Accounting','New York')";
cmd.Connection = conn;
conn.Open();
try {
  int aff = cmd.ExecuteNonQuery();
  MessageBox.Show(aff + " rows were affected.");
}
catch {
  MessageBox.Show("Error encountered during INSERT operation.");
}
finally {
  conn.Close();
}

Console Application - How You Can Create a .NET Core Application Using Entity Framework Core with Oracle

https://www.talkingdotnet.com/create-net-core-application-using-entity-framework-core-with-oracle/

Update Model From Database...
Update Database from Model...
Generate Database Script From Model...

Create a .NET Core Application Using Entity Framework Core with Oracle

Tags: Oracle, Entity Framework Core, EF Core
Categories: Entity Framework Core | EF Core | Oracle
comment

IdentityServer4 + React + .NET Core + EF Core + MySQL

October 19, 2020 02:03

IdentityServer4 + React + .NET Core + EF Core + MySQL (edit)

https://github.com/tungphuong/Dapper.SimpleCRUD

https://github.com/vietnam-devs/crmcore

https://github.com/vietnam-devs/coolstore-microservices

https://medium.com/hackernoon/clean-domain-driven-design-in-10-minutes-6037a59c8b7b

Tags: IdentityServer4, React, MySQL, Net Core, EF Core
Categories: IdentityServer4 | React | MySQL | Net Core | EF Core
comment

Executing Raw SQL Queries using Entity Framework Core

February 12, 2020 23:51

The way to executing raw SQL in EF Core (edit)

EF Core Extension class

    public static class EFCoreExt
    {
        /// <summary>
        ///
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="db"></param>
        /// <param name="query"></param>
        /// <returns></returns>
        public static List<T> ExecuteQuery<T>(this DBContext db, string query) where T : class, new()
        {
            using (var command = db.Database.GetDbConnection().CreateCommand())
            {
                command.CommandText = query;
                command.CommandType = CommandType.Text;
 
                db.Database.OpenConnection();
 
                using (var reader = command.ExecuteReader())
                {
                    var lst = new List<T>();
                    var lstColumns = new T().GetType().GetProperties(BindingFlags.DeclaredOnly | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic).ToList();
                    while (reader.Read())
                    {
                        var newObject = new T();
                        for (var i = 0; i < reader.FieldCount; i++)
                        {
                            var name = reader.GetName(i);
                            PropertyInfo prop = lstColumns.FirstOrDefault(a => a.Name.ToLower().Equals(name.ToLower()));
                            if (prop == null)
                            {
                                continue;
                            }
                            var val = reader.IsDBNull(i) ? null : reader[i];
                            prop.SetValue(newObject, val, null);
                        }
                        lst.Add(newObject);
                    }
 
                    return lst;
                }
            }
        }

Tags: EF Core, Raw SQL, Executing Raw SQL Queries using Entity Framework Core
Categories: Raw SQL | EF Core | Executing Raw SQL Queries using Entity Framework Core
comment

EF Core

September 18, 2017 11:15

Getting Started With Entity Framework Core - Console

http://www.learnentityframeworkcore.com/walkthroughs/console-application

Step 1) Creating a .Net Core Console application

Step 2) Creating A Model

Step 3) Adding A Migration
dotnet ef migrations add CreateDatabase
dotnet ef database update

Step 4) Modifying The Database With Migrations
dotnet ef migrations add LimitStrings
dotnet ef database update

How to use the "dotnet ef migrations ..."

Tags: EF Core
Categories: EF Core
comment

DbUp + Sql Server + EF Core 6 + DB First + Database First + Dapper (edit)

EF Core 6

EF 6

Dapper: Generic repository pattern using Dapper

Oracle + Net Core (edit)

Clean Architecture CQRS + ORACLE + EF CORE + DAPPER

ASP.NET Identity

Oracle with EF Core

.NET Core

.NET Core 2.1