ObjectQuery<T>.Execute(MergeOption) Method
Definition
Important
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Executes the object query with the specified merge option.
public:
System::Data::Objects::ObjectResult<T> ^ Execute(System::Data::Objects::MergeOption mergeOption);public System.Data.Objects.ObjectResult<T> Execute (System.Data.Objects.MergeOption mergeOption);override this.Execute : System.Data.Objects.MergeOption -> System.Data.Objects.ObjectResult<'T>Public Function Execute (mergeOption As MergeOption) As ObjectResult(Of T)Parameters
- mergeOption
- MergeOption
The MergeOption to use when executing the query. The default is AppendOnly.
Returns
An ObjectResult<T> that contains a collection of entity objects returned by the query.
Examples
This example returns an ObjectResult<T> from Execute method. Then it gets an enumerator and iterates through the query results. At the end it releases the enumerator and the ObjectResult<T> object.
using (AdventureWorksEntities context =
new AdventureWorksEntities())
{
ObjectSet<Product> query = context.Products;
ObjectResult<Product> queryResults = null;
System.Collections.IEnumerator enumerator = null;
try
{
queryResults = query.Execute(MergeOption.AppendOnly);
// Get the enumerator.
enumerator = ((System.Collections.IEnumerable)queryResults).GetEnumerator();
// Iterate through the query results.
while (enumerator.MoveNext())
{
Product product = (Product)enumerator.Current;
Console.WriteLine("{0}", product.Name);
}
// Dispose the enumerator
((IDisposable)enumerator).Dispose();
}
finally
{
// Dispose the query results and the enumerator.
if (queryResults != null)
{
queryResults.Dispose();
}
if (enumerator != null)
{
((IDisposable)enumerator).Dispose();
}
}
}
Remarks
The default merge option for object queries is AppendOnly. For more information, see Identity Resolution, State Management, and Change Tracking.
