操作 MySql 数据库使用MySql.Data程序包（MySql 开发，其他第三方可能会有些问题）。
project.json 代码：
{
"version": "1.0.0-*",
"buildOptions": {
"emitEntryPoint": true
},
"dependencies": {
"Microsoft.NETCore.App": {
"type": "platform",
"version": "1.0.1"
},
"Dapper": "1.50.2",
"MySql.Data": "7.0.6-IR31"
},
"frameworks": {
"netcoreapp1.0": {
"imports": "dnxcore50"
}
}
}
测试数据库脚本：
CREATE TABLE `products` (
`ProductID` int(11) NOT NULL AUTO_INCREMENT,
`Name` varchar(255) DEFAULT NULL,
`Quantity` int(11) DEFAULT NULL,
`Price` int(11) DEFAULT NULL,
PRIMARY KEY (`ProductID`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;
Product 代码：
public class Product
{
[Key]
public int ProductId { get; set; }
public string Name { get; set; }
public int Quantity { get; set; }
public double Price { get; set; }
}
ProductRepository 代码（数据访问操作）：
public class ProductRepository
{
private string connectionString;
public ProductRepository()
{
connectionString = @"server=localhost;database=dapperdemo;uid=root;pwd=123456;";
}
public IDbConnection Connection
{
get
{
return new MySqlConnection(connectionString);
}
}
public void Add(Product prod)
{
using (IDbConnection dbConnection = Connection)
{
string sQuery = "INSERT INTO Products (Name, Quantity, Price)"
+ " VALUES(@Name, @Quantity, @Price)";
dbConnection.Open();
dbConnection.Execute(sQuery, prod);
}
}
public IEnumerable<Product> GetAll()
{
using (IDbConnection dbConnection = Connection)
{
dbConnection.Open();
return dbConnection.Query<Product>("SELECT * FROM Products");
}
}
public Product GetByID(int id)
{
using (IDbConnection dbConnection = Connection)
{
string sQuery = "SELECT * FROM Products"
+ " WHERE ProductId = @Id";
dbConnection.Open();
return dbConnection.Query<Product>(sQuery, new { Id = id }).FirstOrDefault();
}
}
public void Delete(int id)
{
using (IDbConnection dbConnection = Connection)
{
string sQuery = "DELETE FROM Products"
+ " WHERE ProductId = @Id";
dbConnection.Open();
dbConnection.Execute(sQuery, new { Id = id });
}
}
public void Update(Product prod)
{
using (IDbConnection dbConnection = Connection)
{
string sQuery = "UPDATE Products SET Name = @Name,"
+ " Quantity = @Quantity, Price= @Price"
+ " WHERE ProductId = @ProductId";
dbConnection.Open();
dbConnection.Execute(sQuery, prod);
}
}
public void TransactionTest()
{
using (IDbConnection dbConnection = Connection)
{
string sQuery = "UPDATE Products SET Name = 'xishuai222'"
+ " WHERE ProductId = 1";
dbConnection.Open();
using (var transaction = dbConnection.BeginTransaction())
{
dbConnection.Execute(sQuery);
///to do throw exception
transaction.Commit();
}
}
}
}
调用代码：
public class Program
{
public static void Main(string[] args)
{
var productRepository = new ProductRepository();
var product = new Product() { Name = "xishuai" };
productRepository.Add(product);
var products = productRepository.GetAll();
foreach (var item in products)
{
Console.WriteLine($"id: {item.ProductId}; name: {item.Name}");
}
productRepository.TransactionTest();
Console.ReadKey();
}
}
参考资料：