使用C＃Web API EF中的POST方法从数据库列出数据

Question

我正在研究一个项目，其中一项要求是能够列出价值故事，而无需使用GET方法。

我的控制器代码在这里：

// POST api/ValueStories
[ResponseType(typeof(ValueStory))]
public async Task<ValueStory> PostValueStory([FromBody] string value)
{
    ValueStory valuestory = await db.ValueStories.FindAsync();

    var valueStoryName = (from vs in db.ValueStories
                          where vs.Id == valuestory.Id
                          select vs).ToList();

    List<ValueStory> vs1 = new List<ValueStory>();
    foreach (var v in valueStoryName)
    {
        vs1.Add(new ValueStory()
        {
            Id = v.Id,
            ValueStoryName = v.ValueStoryName,
            Organization = v.Organization,
            Industry = v.Industry,
            Location = v.Location,
            AnnualRevenue = v.AnnualRevenue,
            CreatedDate = v.CreatedDate,
            ModifiedDate = v.ModifiedDate,
            MutualActionPlan = v.MutualActionPlan,
            Currency = v.Currency,
            VSId = v.VSId
        });
    }
    return valuestory;

}

这是我模型中的代码：

namespace WebServicesAPI.Models
{
    public class ValueStory
    {
        [Key]
        public int VSId { get; set; }
        [Required]
        public string ValueStoryName { get; set; }
        [Required]
        public string Organization { get; set; }
        [Required]
        public int Industry { get; set; }
        [Required]
        public string Location { get; set; }
        [Required]
        public string Currency { get; set; }
        [Required]
        public double AnnualRevenue { get; set; }
        public DateTime CreatedDate { get; set; }
        public DateTime ModifiedDate { get; set; }
        public string MutualActionPlan { get; set; }

        // Foreign Key
        public string Id { get; set; }
        // Navigation property
        public virtual ApplicationUser User { get; set; }

     }

}

我试图通过使用邮递员通过仅在身体上提供ID来对其进行测试，但我收到此错误[link] https://ibb.co/gn5mZ5

我大约2个月前才开始学习C＃，但我仍在努力使自己熟悉它。

在这里感谢一些帮助。

Answer 1

我设法通过将控制器代码更改为：

// POST api/UserValueStories
[ResponseType(typeof(ValueStory))]
[Route("api/UserValueStories")]
[HttpPost]
public List<ValueStory> UserValueStories([FromBody] ValueStory valuestory)
//public void UserValueStories([FromBody] ValueStory Id)
{
    var valueStoryName = (from vs in db.ValueStories
                          where vs.Id == valuestory.Id
                          select vs).ToList();

    List<ValueStory> vs1 = new List<ValueStory>();
    foreach (var v in valueStoryName)
    {
        vs1.Add(new ValueStory()
        {
            Id = v.Id,
            ValueStoryName = v.ValueStoryName,
            Organization = v.Organization,
            Industry = v.Industry,
            Location = v.Location,
            AnnualRevenue = v.AnnualRevenue,
            CreatedDate = v.CreatedDate,
            ModifiedDate = v.ModifiedDate,
            MutualActionPlan = v.MutualActionPlan,
            Currency = v.Currency,
            VSId = v.VSId
        });
    }
    return vs1.ToList();

}