【发布时间】：2015-01-16 15:18:05
【问题描述】：
我正在开发一个有点简单的 InventoryTracker MVC5 应用程序，其中我在将 LocalDatabase 设置为 Seed() 时遇到了一些问题。
当我在下面的代码上运行update-database 命令时，我在context.INV_Types.AddRange(invTypes) 行收到如下异常：
An exception of type 'System.Data.Entity.Infrastructure.DbUpdateException' occurred in EntityFramework.dll but was not handled in user code. Additional information: An error occurred while updating the entries. See the inner exception for details.
内部异常：The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value.\r\nThe statement has been terminated.
代码：
internal sealed class Configuration : DbMigrationsConfiguration<InventoryTracker.DAL.InventoryTrackerContext>
{
public Configuration()
{
AutomaticMigrationsEnabled = false;
}
protected override void Seed(InventoryTracker.DAL.InventoryTrackerContext context)
{
if (System.Diagnostics.Debugger.IsAttached == false)
{
System.Diagnostics.Debugger.Launch();
}
List<INV_Locations> invLocs = getLocations();
context.INV_Locations.AddRange(invLocs);
List<INV_Manufacturers> invManufacturers = getManufacturers();
context.INV_Manufacturers.AddRange(invManufacturers);
List<INV_Models> invModels = getModels();
context.INV_Models.AddRange(invModels);
List<INV_Statuses> invStatuses = getStatuses();
context.INV_Statuses.AddRange(invStatuses);
List<INV_Types> invTypes = getTypes();
context.INV_Types.AddRange(invTypes); // EXCEPTION?
List<INV_Vendors> invVendors = getVendors();
context.INV_Vendors.AddRange(invVendors);
context.SaveChanges(); // Was told I needed to Save the other seeds before the Assets to ensure primary keys are created in the other tables?
List<INV_Assets> invAssets = getAssets();
context.INV_Assets.AddRange(invAssets);
context.SaveChanges();
}
private List<INV_Types> getTypes()
{
List<INV_Types> testTypes = new List<INV_Types>
{
new INV_Types
{
Id = 1,
type_description = "Server",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Types
{
Id = 2,
type_description = "IP Phone",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Types
{
Id = 3,
type_description = "Monitor",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testTypes;
}
private List<INV_Assets> getAssets()
{
List<INV_Assets> testAssets = new List<INV_Assets>
{
new INV_Assets
{
Id = 1,
ip_address = "10.10.135.38",
mac_address = "10.10.177.44",
note = "",
owner = "John Smith",
cost = 35,
po_number = "G348",
invoice_number = 1447,
serial_number = "JX14582Y",
asset_tag_number = "293548195023",
//acquired_date = Convert.ToDateTime(10212014),
acquired_date = DateTime.ParseExact("10212014", "MMddyyyy", CultureInfo.InvariantCulture),
disposed_date = null,
created_by = "Admin",
created_date = DateTime.Now,
Location_Id = 1,
Manufacturer_Id = 1,
Model_Id = 1,
Status_Id = 2,
Type_Id = 3,
Vendor_Id = 3
}
};
return testAssets;
}
是否有人对我的Seed() for INV_Types 的结构中可能导致此问题的原因有任何想法？
我认为这可能是我需要在getTYpes() 之前将我的更改保存到上下文中，但是在.AddRange(invStatuses) 之后添加context.SaveChanges() 只会导致与新的context.SaveChanges() 相同的错误？？
如果有人看到我忽略的东西，我在下面包含了我的其他种子方法：
#region Seed Locations
private List<INV_Locations> getLocations()
{
List<INV_Locations> testLocations = new List<INV_Locations>
{
new INV_Locations
{
Id = 1,
location_dept = "IT",
location_room = "Server",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Locations
{
Id = 2,
location_dept = "Break Room",
location_room = "Kitchen",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Locations
{
Id = 3,
location_dept = "Accounting",
location_room = "Conference",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testLocations;
}
#endregion
#region Seed Manufacturers
private List<INV_Manufacturers> getManufacturers()
{
List<INV_Manufacturers> testManufacturers = new List<INV_Manufacturers>
{
new INV_Manufacturers
{
Id = 1,
manufacturer_description = "Samsung",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Manufacturers
{
Id = 2,
manufacturer_description = "MITEL",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Manufacturers
{
Id = 3,
manufacturer_description = "Oracle",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testManufacturers;
}
#endregion
#region Seed Models
private List<INV_Models> getModels()
{
List<INV_Models> testModels = new List<INV_Models>
{
new INV_Models
{
Id = 1,
model_description = "XTERAV12",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Models
{
Id = 2,
model_description = "5330",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Models
{
Id = 3,
model_description = "Sunblade 6000",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testModels;
}
#endregion
#region Seed Statuses
private List<INV_Statuses> getStatuses()
{
List<INV_Statuses> testStatuses = new List<INV_Statuses>
{
new INV_Statuses
{
Id = 1,
status_description = "AVAILABLE",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Statuses
{
Id = 2,
status_description = "SIGNEDOUT",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Statuses
{
Id = 3,
status_description = "RECYCLED",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Statuses
{
Id = 4,
status_description = "AUCTIONED",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testStatuses;
}
#endregion
#region Seed Types
private List<INV_Types> getTypes()
{
List<INV_Types> testTypes = new List<INV_Types>
{
new INV_Types
{
Id = 1,
type_description = "Server",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Types
{
Id = 2,
type_description = "IP Phone",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Types
{
Id = 3,
type_description = "Monitor",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testTypes;
}
#endregion
#region Seed Vendors
private List<INV_Vendors> getVendors()
{
List<INV_Vendors> testVendors = new List<INV_Vendors>
{
new INV_Vendors
{
Id = 1,
vendor_name = "Oracle",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Vendors
{
Id = 2,
vendor_name = "Centriq",
created_by = "Admin",
created_date = DateTime.Now
},
new INV_Vendors
{
Id = 3,
vendor_name = "Samsung",
created_by = "Admin",
created_date = DateTime.Now
}
};
return testVendors;
}
#endregion
编辑：
正如IronMan84 指出的那样，我错误地将每个实体的多个实例复制粘贴到具有相同Id 值（例如1、2、1 而不是1、2、3）的位置。但是，错误仍然存在，除了现在在以下行：
context.INV_Vendors.AddRange(invVendors);
context.SaveChanges(); // DbUpdateException!
List<INV_Assets> invAssets = getAssets();
EDIT2：在最初列出的错误中添加了内部异常详细信息。 The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value.\r\nThe statement has been terminated.
EDIT3：为了更好地诊断问题，我尝试在每个.AddRange() 调用之后添加context.SaveChanges()，但context.INV_Locations.AddRange(invLocs) 之后的第一个实例会导致相同的错误：
An exception of type 'System.Data.Entity.Infrastructure.DbUpdateException' occurred in EntityFramework.dll but was not handled in user code. Additional information: An error occurred while updating the entries. See the inner exception for details.
内部异常：The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value.\r\nThe statement has been terminated.
我只能想象这是引用我的getLocations() 将[created_date] 值设置为DateTime.Now，但我不确定问题是什么？
在我的模型中，我将属性定义为：
[Required]
[DisplayFormat(DataFormatString = "{0:MM/dd/yyyy}")]
public DateTime created_date { get; set; }
【问题讨论】：
-
内部异常是怎么说的？
标签： c# asp.net-mvc entity-framework asp.net-mvc-5 entity-framework-migrations