title: The magic number in GZip header is not correct. Make sure you are passing in a GZip stream
body: <p>I am trying to retrieve product name and its ids as NameID object from EntityFramework using WebAPI. code for which is as following.</p>
  
  <pre><code>public class ProductController : ApiController
  {
      protected MainDataContext db = new MainDataContext();
      // GET /api/values
      public IQueryable&lt;NameID&gt; Get()
      {
          return db.Products.Select(x=&gt;new NameID{ ID=x.ID,Name=x.Name }).AsQueryable();
      }
  
      // GET /api/values/5
      public NameID Get(long id)
      {
          var result = db.Products.Select(x=&gt;new NameID{ ID=x.ID,Name=x.Name }).SingleOrDefault(x =&gt; x.ID == id);
          if (id == 0 || result == null)
              throw new HttpResponseException(HttpStatusCode.NotFound); 
          return result;
      }
  
  }
  public class NameID {
      public long ID {get;set;}
      public string Name {get;set;}
  }
  </code></pre>
  
  <p>It throws error as following</p>
  
  <pre><code>The magic number in GZip header is not correct.
  Make sure you are passing in a GZip stream.
  
  at System.IO.Compression.GZipDecoder.ReadHeader(InputBuffer input) 
  at System.IO.Compression.Inflater.Decode() 
  at System.IO.Compression.Inflater.Inflate(Byte[] bytes, Int32 offset, Int32 length) 
  at System.IO.Compression.DeflateStream.Read(Byte[] array, Int32 offset, Int32 count) 
  at System.IO.Compression.GZipStream.Read(Byte[] array, Int32 offset, Int32 count) 
  at System.Xml.XmlTextReaderImpl.InitStreamInput(Uri baseUri, String baseUriStr, Stream stream, Byte[] bytes, Int32 byteCount, Encoding encoding) 
  at System.Xml.XmlTextReaderImpl..ctor(Stream stream, Byte[] bytes, Int32 byteCount, XmlReaderSettings settings, Uri baseUri, String baseUriStr, XmlParserContext context, Boolean closeInput) 
  at System.Xml.XmlReaderSettings.CreateReader(Stream input, Uri baseUri, String baseUriString, XmlParserContext inputContext) 
  at System.Xml.XmlReader.Create(Stream input, XmlReaderSettings settings, String baseUri) 
  at System.Xml.Linq.XDocument.Load(Stream stream, LoadOptions options) 
  at System.Data.Entity.Migrations.Edm.ModelCompressor.Decompress(Byte[] bytes) 
  at System.Data.Entity.Migrations.History.HistoryRepository.GetLastModel(String&amp; migrationId) 
  at System.Data.Entity.Migrations.History.HistoryRepository.GetLastModel() 
  at System.Data.Entity.Internal.InternalContext.QueryForModel() 
  at System.Data.Entity.Internal.ModelCompatibilityChecker.CompatibleWithModel(InternalContext internalContext, ModelHashCalculator modelHashCalculator, Boolean throwIfNoMetadata) 
  at System.Data.Entity.Internal.InternalContext.CompatibleWithModel(Boolean throwIfNoMetadata) 
  at System.Data.Entity.CreateDatabaseIfNotExists`1.InitializeDatabase(TContext context) 
  at System.Data.Entity.Internal.InternalContext.&lt;&gt;c__DisplayClass8.&lt;PerformDatabaseInitialization&gt;b__6() 
  at System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action) 
  at System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization() 
  at System.Data.Entity.Internal.LazyInternalContext.&lt;InitializeDatabase&gt;b__4(InternalContext c) 
  at System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input) 
  at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action) 
  at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase() 
  at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) 
  at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() 
  at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext() 
  at System.Data.Entity.Infrastructure.DbQuery`1.System.Linq.IQueryable.get_Provider() 
  at System.Linq.Queryable.Select[TSource,TResult](IQueryable`1 source, Expression`1 selector) 
  at ProductAPI.Controllers.ProductController.Get() in D:\Demo\ProductAPI\Controllers\ProductController.cs:line 24 
  at lambda_method(Closure , Object , Object[] ) 
  at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments) 
  at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.Execute(HttpControllerContext controllerContext, IDictionary`2 arguments) 
  at System.Web.Http.Controllers.ApiControllerActionInvoker.&lt;&gt;c__DisplayClass2.&lt;InvokeActionAsync&gt;b__0() 
  at System.Threading.Tasks.TaskHelpers.RunSynchronously[TResult](Func`1 func, CancellationToken cancellationToken)
  </code></pre>