Using Dapper
Dapper is a micro ORM (Object-Relational Mapping) tool that provides a simple and flexible way to interact with databases. It operates on top of the ADO.NET standard and offers various features that simplify database operations.
Getting started
To get started, you need an additional dependency Dapper.
Let's consider a complete example:
using Dapper;
using Ydb.Sdk.Ado;
await using var connection = await new YdbDataSource().OpenConnectionAsync();
await connection.ExecuteAsync("""
CREATE TABLE Users(
Id Int32,
Name Text,
Email Text,
PRIMARY KEY (Id)
);
""");
await connection.ExecuteAsync("INSERT INTO Users(Id, Name, Email) VALUES (@Id, @Name, @Email)",
new User { Id = 1, Name = "Name", Email = "Email" });
Console.WriteLine(await connection.QuerySingleAsync<User>("SELECT * FROM Users WHERE Id = @Id", new { Id = 1 }));
await connection.ExecuteAsync("DROP TABLE Users");
internal class User
{
public int Id { get; init; }
public string Name { get; init; } = null!;
public string Email { get; init; } = null!;
public override string ToString()
{
return $"Id: {Id}, Name: {Name}, Email: {Email}";
}
}
For more information, refer to the official documentation.
Important aspects
For Dapper to interpret DateTime values as the YDB type DateTime, execute the following code:
SqlMapper.AddTypeMap(typeof(DateTime), DbType.DateTime);
By default, DateTime is interpreted as Timestamp.