Updating data with linq


30-Sep-2020 17:25

updating data with linq-20

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Product_Id = id, but how do I pass the update statement.

I´m trying to update my Students table record using LINQ to SQL. data types are matched Here is the full Argument Exception: _ Public Class Student Implements System. Guid) If ((_student_id = value) = False) Then Send Property Changing() _student_id = value Send Property Changed("student_id") End If End Set End Property _ Public Property first_name() As String Get Return _first_name End Get Set(By Val value As String) If ((_first_name = value) = False) Then **Send Property Changing()** _first_name = value Send Property Changed("first_name") End If End Set End Property _ Public Property language() As String Get Return _last_name End Get Set(By Val value As String) If ((_last_name = value) = False) Then **Send Property Changing()** _last_name = value Send Property Changed("last_name") End If End Set End Property _ Public Property email() As String Get Return _email End Get Set(By Val value As String) If ((_email = value) = False) Then **Send Property Changing()** _email = value Send Property Changed("email") End If End Set End Property #End Region #Region "Linq Methods" Public Event Property Changing As Property Changing Event Handler Implements System. Property Changed Event Is Nothing) = False) Then Raise Event Property Changed(Me, New Property Changed Event Args(property Name)) End If End Sub #End Region End Class This is how I'm trying to update a Student Using context As New db Students(str Conn String) Dim tmp Student = (From p In context.

Attach(_Employee, true); or Using context As New db Students(str Conn String) Dim tmp Student = (From p In context.

I get the record using the query: Dim values = From n In entities. Looks like, update Model is working, but since I am not updating anything, there is no change in the DB. I really, really struggled to find a similiar link for VB Look at that link and maybe you'll see something in your own code that might fix things.



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