Puts an entity from this table into a pending delete state.
(in System.Data.Linq.dll)
Visual Basic (Declaration)
Public Sub DeleteOnSubmit ( _
entity As TEntity _
)
Dim instance As Table
Dim entity As TEntity
instance.DeleteOnSubmit(entity)
public void DeleteOnSubmit(
TEntity entity
)
public:
void DeleteOnSubmit(
TEntity entity
)
public function DeleteOnSubmit(
entity : TEntity
)
Parameters
- entity
- Type: TEntity
The entity to be deleted.
The removed entity is not seen to be missing from the query results until after SubmitChanges is called. Disconnected entities must first be attached before they can be deleted. For more information, see Data Retrieval and CUD Operations in N-Tier Applications (LINQ to SQL).
.gif) Note: |
|---|
LINQ to SQL does not support or recognize cascade-delete operations. If you want to delete a row in a table that has constraints against it, you must either set the ON DELETE CASCADE rule in the foreign-key constraint in the database, or use your own code to first delete the child objects that prevent the parent object from being deleted. Otherwise, an exception is thrown. |
' Query the database for the rows to be deleted.
Dim deleteOrderDetails = _
From details In db.OrderDetails() _
Where details.OrderID = 11000 _
Select details
For Each detail As OrderDetail In deleteOrderDetails
db.OrderDetails.DeleteOnSubmit(detail)
Next
Try
db.SubmitChanges()
Catch ex As Exception
Console.WriteLine(ex)
' Provide for exceptions
End Try
// Query the database for the rows to be deleted.
var deleteOrderDetails =
from details in db.OrderDetails
where details.OrderID == 11000
select details;
foreach (var detail in deleteOrderDetails)
{
db.OrderDetails.DeleteOnSubmit(detail);
}
try
{
db.SubmitChanges();
}
catch (Exception e)
{
Console.WriteLine(e);
// Provide for exceptions.
}
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5
Reference