我有一个简单的模型Config和MyValue:
public Class Config
Public Property ConfigId as Integer
Public Property Name As String
Public Property MyValue as MyValue
Public Property ...
end class
Public Class MyValue
Public Property MyValueId as Integer
Public Property Value as Decimal
Public Property Info As String
Public Property ...
end class
我想在更改后更新我的数据库中的配置: - TextBox中的名称文本(绑定ViewModel) - ComboBox中的MyValue对象(绑定ViewModel) - 具有约束力的其他值
Public Function SaveExececute() As String
ObjConfig.Name = SomeString 'FAKE All is binded'
ObjConfig.MyValue = SomeObject 'FAKE All is binded'
' ... '
Using ctx As New DbContext
Try
ctx.Entry(ObjConfig.MyValue).State = Entity.EntityState.Modified
ctx.Entry(ObjConfig).State = Entity.EntityState.Modified
ctx.SaveChanges()
Return "UPDATED"
Catch ex As Exception
Return ex.Message
End Try
End Using
End Sub
在数据库上修改的所有值除了我的新MyValue与Id 2(我的sql数据库上的MyValue_MyValueId = 1),Disconnect方法无法识别新对象MyValue,如何附加和更新新的对象MyValue?< / p>
答案 0 :(得分:0)
我对Vb.Net并不擅长,所以我会尝试(我使用C#)
您的ObjConfig
和ctx
与Using ctx As New DbContext
Try
Dim ObjConfig as New ObjConfig() = ctx.ObjConfigEntity.Find(ObjConfig.Id) ''Or seach by you data
Dim MyValue as New MyValue() = ctx.MyValueEntity.Find(ObjConfig.MyValue.Id)
ctx.Entry(MyValue).State = Entity.EntityState.Modified
ctx.Entry(ObjConfig).State = Entity.EntityState.Modified
ctx.SaveChanges()
Return "UPDATED"
Catch ex As Exception
Return ex.Message
End Try
End Using
的上下文不同,因为您在不同的情境中打开
要解决此问题,您应该执行以下操作:
using
总之,您无法使用using
中加载的数据来更新# fc1 layer
W_fc3 = weight_variable([512, 1000])
b_fc3 = bias_variable([1000])
output = tf.nn.relu(tf.matmul(h_fc2, W_fc3) + b_fc3)
#print("output: {}".format(output.get_shape()))
return output
中的开放背景,因为它们不同