C# 无法使用实体框架和ASP.NET MVC从Models.Class转换为DbContext.Class

我使用的是数据库优先的方法，我想在数据库中插入一些数据。我正在使用以下代码：

public ActionResult Create(StudentDetails studentDetails)
{
    using (StudentRecordManagementEntities1 obj = new StudentRecordManagementEntities1())
    {
         obj.StudentDetails.Add(studentDetails);  //throws error
    }
}

模型类：

public class StudentDetails
{
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }
    public string Name { get; set; }
    public Nullable<long> ContactNumber { get; set; }
    public string Address { get; set; }
    public decimal Fees { get; set; }
    public bool isPaid { get; set; }
}

错误详细信息：

错误CS1503参数1:无法从“StudentRecordManagement.Models.StudentDetails”转换为“StudentRecordManagement.Models.StudentDetails”StudentRecordManagement*

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如果您需要更多详细信息，请告诉我。

您的模型类似乎是StudentRecordManagement.Models.StudentDetail，但是您正在插入StudentRecordManagement.Models.StudentDetails。因此，您可以为数据库模型提供必要的类型：

public ActionResult Create(StudentDetails studentDetails)
{
    using (StudentRecordManagementEntities1 obj = new StudentRecordManagementEntities1())
    {
        var studentDetail = new StudentRecordManagement.Models.StudentDetail {
         Name = studentDetails.Name,
         // the other code is omitted for the brevity
     };
     obj.StudentDetails.Add(studentDetail);  //
}

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看起来您的模型类是StudentRecordManagement.Models.StudentDetail，但是您正在插入StudentRecordManagement.Models.StudentDetails。因此，您可以为数据库模型提供必要的类型：

public ActionResult Create(StudentDetails studentDetails)
{
    using (StudentRecordManagementEntities1 obj = new StudentRecordManagementEntities1())
    {
        var studentDetail = new StudentRecordManagement.Models.StudentDetail {
         Name = studentDetails.Name,
         // the other code is omitted for the brevity
     };
     obj.StudentDetails.Add(studentDetail);  //
}