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CompiledQuery Class

Represents a cached LINQ to Entities query.

System.Object
  System.Data.Objects.CompiledQuery

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

public sealed class CompiledQuery

The CompiledQuery type exposes the following members.

  NameDescription
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, TArg15, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, TArg15, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TResult>(Expression<Func<TArg0, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TResult>(Expression<Func<TArg0, TArg1, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TResult>(Expression<Func<TArg0, TArg1, TArg2, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodStatic memberCompile<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TResult>(Expression<Func<TArg0, TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TResult>>)Creates a new delegate that represents the compiled LINQ to Entities query.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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Provides for compilation and caching of queries for reuse. Conceptually this class contains a single Compile method with several overloads. You call the Compile method to create a new delegate to represent the compiled query. The delegate, when invoked with the ObjectContext input parameter and other parameter values, produces some result (such as an IQueryable<T> instance). The query is translated and cached when the delegate is invoked for the first time.

The following example compiles and then invokes a query that accepts DateTime and Decimal input parameters and returns a sequence of orders where the order date is later than March 8, 2003 and the total due is less than $300.00:

static readonly Func<AdventureWorksEntities, DateTime, Decimal, IQueryable<SalesOrderHeader>> s_compiledQuery5 = 
    CompiledQuery.Compile<AdventureWorksEntities, DateTime, Decimal, IQueryable<SalesOrderHeader>>(
            (ctx, orderDate, totalDue) => from product in ctx.SalesOrderHeaders
                                          where product.OrderDate > orderDate 
                                             && product.TotalDue < totalDue
                                          orderby product.OrderDate
                                          select product);

static void CompiledQuery5()
{            
    using (AdventureWorksEntities context = new AdventureWorksEntities())
    {         
        DateTime date = new DateTime(2003, 3, 8);
        Decimal amountDue = 300.00M;

        IQueryable<SalesOrderHeader> orders = s_compiledQuery5.Invoke(context, date, amountDue);

        foreach (SalesOrderHeader order in orders)
        {
            Console.WriteLine("ID: {0} Order date: {1} Total due: {2}", order.SalesOrderID, order.OrderDate, order.TotalDue);
        }
    }            
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5 SP1

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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