当我尝试通过EF Core向数据库添加内容时,我遇到了这个错误。
System.InvalidOperationException:'未找到适合的构造函数以用于实体类型“ HealthCheck”。以下构造函数具有无法绑定到实体类型属性的参数:不能在“ HealthCheck(string title,string hctype,string link)”中绑定“ hctype ”。'
这是我的HealthCheck类:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace Application.Models
{
public class HealthCheck
{
public HealthCheck(string title, string hctype, string link)
{
Title = title;
HCType = hctype;
Link = link;
}
public int Id { get; set; }
public string Title { get; set; }
public string HCType { get; set; }
public string Link { get; set; }
}
}
我的仓储上下文
using Microsoft.EntityFrameworkCore;
using Application.Models;
namespace Application.Repository
{
public class RepositoryContext : DbContext
{
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSqlServer(
@"Server=(localdb)\mssqllocaldb;Database=healthcheck;Integrated Security=True");
}
//public DbSet<HealthCheck> HealthChecks { get; set; }
//public DbSet<UserHealthCheck> UserHealthChecks { get; set; }
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<HealthCheck>().ToTable("HealthCheck");
modelBuilder.Entity<UserHealthCheck>().ToTable("UserHealthCheck");
}
}
}
我的代码库
using Application.Models;
namespace Application.Repository
{
public class Repository
{
public void InsertHealthCheck(HealthCheck healthCheck)
{
using (var db = new RepositoryContext())
{
db.Add(healthCheck);
db.SaveChanges();
}
}
}
}
这里就是“InsertHealthCheck()”被调用的地方
[Route("/api/HealthCheck/Website")]
[HttpPost]
public ActionResult WebsiteStatus([FromBody] WebsiteDataModel websiteData)
{
HealthCheck data = new HealthCheck(websiteData.Title, "Website", websiteData.Url);
try
{
HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(websiteData.Url);
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
HttpStatusCode HealthCheckStatusCode = myHttpWebResponse.StatusCode;
myHttpWebResponse.Close();
return Ok(HealthCheckStatusCode);
}
catch(UriFormatException)
{
return Ok("Check url.");
}
catch (Exception)
{
return Ok("400");
}
finally
{
repository.InsertHealthCheck(data);
}
}
如果您能帮我一下,我将不胜感激。如果您需要我发布代码的其他部分,请提出要求。
此外,我刚刚开始学习EF Core,如果我做了什么很愚蠢的事情,请指出来。