DeleteOnSubmit Method

Table<TEntity>.DeleteOnSubmit Method (TEntity)

 

Puts an entity from this table into a pending delete state.

Namespace:   System.Data.Linq
Assembly:  System.Data.Linq (in System.Data.Linq.dll)

public void DeleteOnSubmit(
	TEntity entity
)

Parameters

entity
Type: TEntity

The entity to be deleted.

The removed entity does not disappear 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).

System_CAPS_noteNote

   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.
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.
}

.NET Framework
Available since 3.5
Windows Phone Silverlight
Available since 7.1
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