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ObjectResult<T>.GetEnumerator Method

Returns an enumerator that iterates through the query results.

Namespace:  System.Data.Objects
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public IEnumerator<T> GetEnumerator()

Return Value

Type: System.Collections.Generic.IEnumerator<T>
An enumerator that iterates through the query results.

Implements

IEnumerable<T>.GetEnumerator()

The enumerator must be disposed when no longer needed. Using the foreach statement (For Each in Visual Basic) ensures that the enumerator is correctly disposed when iteration over the results is complete.

The example in this topic is based on the Adventure Works Sales Model. The example returns an ObjectResult<T> from the 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();
        }
    }
}


.NET Framework

Supported in: 4, 3.5 SP1

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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