/// <summary>
/// 移除用户考卷信息
/// </summary>
/// <param name="exam"></param>
/// <returns></returns>
public static bool Remove(ExamUsers exam)
{
using (var db = new DataContext())
{
db.ExamUsers.Attach(exam);
db.Entry(exam).State = Microsoft.EntityFrameworkCore.EntityState.Deleted;
return(db.SaveChanges() == 1);
}
}
/// <summary>
/// 插入一条用户考卷信息
/// </summary>
/// <param name="exam"></param>
/// <returns></returns>
public static bool Insert(ExamUsers exam)
{
if (exam == null)
{
return(false);
}
bool success = false;
using (var db = new DataContext())
{
db.ExamUsers.Add(exam);
success = db.SaveChanges() > 0;
}
return(success);
}
/// <summary>
/// 更新用户考卷信息
/// </summary>
/// <param name="exam">用户考卷</param>
/// <returns></returns>
public static bool Update(ExamUsers exam)
{
if (exam == null)
{
return(false);
}
bool success = false;
using (var db = new DataContext())
{
db.ExamUsers.Attach(exam);
db.Entry(exam).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
success = db.SaveChanges() > 0;
}
return(success);
}
