如何设置返回类型并显示相关toaster

我正在使用ASP.NET核心Web API，并且我不知道如何在将数据插入数据库时​​返回某些信息，然后在响应类型上显示相关的错误或成功。我创建了一个接口，在其中定义方法，然后在服务中实现接口方法，并将数据插入数据库，然后创建连接到angular的控制器。

接口方法

void AddMurderComplian(Complians complians);

服务方法

public void AddMurderComplian(Complians complians)
{
var complianmurder = new Complians()
{
Dead = complians.Dead,Wounded = complians.Wounded,CriminalsInvolved = complians.CriminalsInvolved,CriminalAppearence = complians.CriminalAppearence,VehiclesUsed = complians.VehiclesUsed,WeapOnsDescription= complians.WeaponsDescription,SubType = complians.SubType,ApplicatiOnUserId= complians.ApplicationUserId
};
try
{
_appDbContext.Complians.Add(complianmurder);
_appDbContext.SaveChanges();
}
catch (Exception ex)
{
throw ex;
}
}


控制器

[HttpPost]
[Route("complianmurder")]
public void Post(Complians complian)
{
_complians.AddMurderComplian(complian);
}


角度

submitMurderInfo()
{
this.formModelMurder.SubType = "Murder";
this.formModelMurder.ApplicatiOnUserId= sessionStorage.getItem("Id");
this.murderService.murderQuestionnaire(this.formModelMurder).subscribe(
(res: any)=>{
if (res.succeeded)
{
// this.toastr.success("Welome ");
// this.formModelMurder.Dead = '',// this.formModelMurder.Wounded ='',// this.formModelMurder.CriminalsInvolved = '',// this.formModelMurder.CriminalAppearence = '',// this.formModelMurder.VehiclesUsed = '',// this.formModelMurder.WeapOnsDescription='',// this.formModelMurder.SubType = '',// this.formModelMurder.ApplicatiOnUserId= ''
}
else
{
// this.toastr.error('Sorry Check your complian');
}
});
}


我会这样：

public bool AddMurderComplian(Complians complians)
{
bool succeeded = false;
var complianMurder = new Complians()
{
Dead = complians.Dead,Wounded = complians.Wounded,CriminalsInvolved = complians.CriminalsInvolved,CriminalAppearence = complians.CriminalAppearence,VehiclesUsed = complians.VehiclesUsed,WeapOnsDescription= complians.WeaponsDescription,SubType = complians.SubType,ApplicatiOnUserId= complians.ApplicationUserId
};
try
{
_appDbContext.Complians.Add(complianMurder);
_appDbContext.SaveChanges();
succeeded = true;
return succeeded;
}
catch (Exception ex)
{
succeeded = false;
return succeeded;
}
}


在控制器方法中：

[HttpPost]
[Route("complianMurder")]
public bool Post(Complians complian)
{
return _complians.AddMurderComplian(complian);
}


成角度：

submitMurderInfo()
{
this.formModelMurder.SubType = "Murder";
this.formModelMurder.ApplicatiOnUserId= sessionStorage.getItem("Id");
this.murderService
.murderQuestionnaire(this.formModelMurder)
.subscribe((res: any) => {
if (res) {
// Successfully inserted
} else {
// this.toastr.error('Sorry Check your complian');
}
});
}