我想更新数据库中的记录,但是当前context.Entry(emp).State = System.Data.Entity.EntityState.Modified;
没有执行。当控制权到达这一点时,它将移至catch
块。
请告诉我我要去哪里哪里
[HttpPost]
public JsonResult _pEmp(EmpViewModel model)
{
try
{
Emp emp = new Emp();
if (model.File != null && model.File.ContentLength > 0)
{
string fileName = Path.GetFileName(model.File.FileName);
string ImagePath = "/Image/" + fileName;
string path = Path.Combine(Server.MapPath("~/Image/"), fileName);
model.File.SaveAs(path);
emp.FilePath = ImagePath;
}
var Getdata = context.emp.Where(x => x.Name == model.Name && x.Address == model.Address).FirstOrDefault();
emp.Id = Getdata.Id;
emp.Name = model.Name;
emp.Address = model.Address;
context.Entry(emp).State = System.Data.Entity.EntityState.Modified;
context.SaveChanges();
return Json(new { success = true, filePath = emp.FilePath });
}
catch
{
return Json(new { success = false });
}
}
答案 0 :(得分:2)
您正在错误地更新它。您首先需要从EF获取对象,更改其值然后保存。
这是更新后的代码-语法不符合要求,但可以为您提供思路。
var Getdata = context.emp.Where(x => x.Name == model.Name && x.Address == model.Address).FirstOrDefault();
//Implement it like this
//Getdata.Id = model.Id; - Should not be updated since its primary key
Getdata.Name = model.Name;
Getdata.Address = model.Address;
context.Entry(Getdata).State = System.Data.Entity.EntityState.Modified;
context.SaveChanges();