要使用ASP.Net Core 3.1 Razor Pages和Dapper进行CRUD操作,您需要按照以下步骤进行设置:
创建一个ASP.Net Core 3.1 Razor Pages项目。
在项目中安装Dapper和Dapper.Contrib包。可以通过NuGet包管理器或通过命令行运行以下命令来安装它们:
Install-Package Dapper
Install-Package Dapper.Contrib
创建一个名为Models
的文件夹,并在其中创建一个名为Employee.cs
的类,表示员工模型。示例代码如下:
public class Employee
{
public int Id { get; set; }
public string Name { get; set; }
public string Email { get; set; }
public string Department { get; set; }
}
在appsettings.json
文件中配置数据库连接字符串。示例代码如下:
{
"ConnectionStrings": {
"DefaultConnection": "your_connection_string_here"
},
// other configurations...
}
在Startup.cs
文件的ConfigureServices
方法中配置Dapper并注册数据库连接。示例代码如下:
using Microsoft.Extensions.Configuration;
using Dapper;
using System.Data.SqlClient;
public void ConfigureServices(IServiceCollection services)
{
// other service configurations...
services.AddTransient(c =>
new SqlConnection(Configuration.GetConnectionString("DefaultConnection")));
}
创建一个名为EmployeeRepository.cs
的类,用于执行与数据库相关的操作。示例代码如下:
using Dapper;
using System.Collections.Generic;
using System.Data;
using System.Threading.Tasks;
public class EmployeeRepository
{
private readonly IDbConnection _db;
public EmployeeRepository(IDbConnection db)
{
_db = db;
}
public async Task> GetAllEmployees()
{
return await _db.QueryAsync("SELECT * FROM Employees");
}
public async Task GetEmployeeById(int id)
{
return await _db.QueryFirstOrDefaultAsync("SELECT * FROM Employees WHERE Id = @Id", new { Id = id });
}
public async Task CreateEmployee(Employee employee)
{
return await _db.ExecuteAsync("INSERT INTO Employees (Name, Email, Department) VALUES (@Name, @Email, @Department)", employee);
}
public async Task UpdateEmployee(Employee employee)
{
return await _db.ExecuteAsync("UPDATE Employees SET Name = @Name, Email = @Email, Department = @Department WHERE Id = @Id", employee);
}
public async Task DeleteEmployee(int id)
{
return await _db.ExecuteAsync("DELETE FROM Employees WHERE Id = @Id", new { Id = id });
}
}
创建一个名为Index.cshtml
的Razor页面,用于显示所有员工信息。示例代码如下:
@page
@model IndexModel
@{
ViewData["Title"] = "Employee List";
}
@ViewData["Title"]
Id
Name
Email
Department
@foreach (var employee in Model.Employees)
{
@employee.Id
@employee.Name
@employee.Email
@employee.Department
}
在Index.cshtml.cs
文件中创建一个名为IndexModel
的Razor页面模型,并在OnGet
方法中获取所有员工信息。示例代码如下:
using Microsoft.AspNetCore.Mvc.RazorPages;
using System.Collections.Generic;
using System.Threading.Tasks;
public class IndexModel : PageModel
{
private readonly EmployeeRepository _employeeRepository;
public IndexModel(EmployeeRepository employeeRepository)
{
_employeeRepository = employeeRepository;
}
public IEnumerable Employees { get; set; }
public async Task OnGet()
{
Employees = await _employeeRepository.GetAllEmployees();
}
}
运
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