public async Task<bool> Update(VehicleType item)
{
if (item.HeadId == null)
throw new ArgumentNullException("HeadId");
var type = await IdExist(item.Id);
type.Name = item.Name;
type.HeadId = await HeadExist(item.HeadId.Value);
_db.Entry(type).State = EntityState.Modified;
try
{
await _db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException exception)
{
throw new DbUpdateConcurrencyException(exception.Message);
}
return true;
}
public async Task<VehicleType> Add(VehicleType item)
{
if (item.HeadId == null)
throw new ArgumentNullException("HeadId");
var type = new VehicleType
{
Name = item.Name,
HeadId = await HeadExist(item.HeadId.Value)
};
type = _db.VehicleTypes.Add(type);
try
{
await _db.SaveChangesAsync();
return type;
}
catch (DbUpdateConcurrencyException exception)
{
throw new DbUpdateConcurrencyException(exception.Message);
}
}