CompiledQuery.Compile<TArg0, TResult> 方法 (Expression<Func<TArg0, TResult>>)
[此頁面專屬於 Entity Framework 第 6 版。最新版本可從 'Entity Framework' NuGet 套件取得。如需 Entity Framework 的詳細資訊，請參閱 msdn.com/data/ef。]
建立新委派以表示編譯的 LINQ to Entities 查詢。
命名空間： System.Data.Entity.Core.Objects
組件： EntityFramework (在 EntityFramework.dll 中)
語法
'宣告
<SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")> _
<SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters", Justification := "required for this feature")> _
Public Shared Function Compile(Of TArg0 As ObjectContext, TResult) ( _
query As Expression(Of Func(Of TArg0, TResult)) _
) As Func(Of TArg0, TResult)
'用途
Dim query As Expression(Of Func(Of TArg0, TResult))
Dim returnValue As Func(Of TArg0, TResult)
returnValue = CompiledQuery.Compile(query)
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters", Justification = "required for this feature")]
public static Func<TArg0, TResult> Compile<TArg0, TResult>(
Expression<Func<TArg0, TResult>> query
)
where TArg0 : ObjectContext
[SuppressMessageAttribute(L"Microsoft.Design", L"CA1006:DoNotNestGenericTypesInMemberSignatures")]
[SuppressMessageAttribute(L"Microsoft.Design", L"CA1011:ConsiderPassingBaseTypesAsParameters", Justification = L"required for this feature")]
public:
generic<typename TArg0, typename TResult>
where TArg0 : ObjectContext
static Func<TArg0, TResult>^ Compile(
Expression<Func<TArg0, TResult>^>^ query
)
[<SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")>]
[<SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters", Justification = "required for this feature")>]
static member Compile :
query:Expression<Func<'TArg0, 'TResult>> -> Func<'TArg0, 'TResult> when 'TArg0 : ObjectContext
JScript does not support generic types and methods.
類型參數
- TArg0
衍生自 ObjectContext 的類型。
- TResult
查詢結果的類型 T，這些查詢結果是由執行 Compile<TArg0, TResult>(Expression<Func<TArg0, TResult>>) 方法所傳回的委派而傳回。
參數
- query
類型：System.Linq.Expressions.Expression<Func<TArg0, TResult>>
要編譯的 Lambda 運算式。
傳回值
類型：System.Func<TArg0, TResult>
Func<T, TResult> ，表示編譯的 LINQ to Entities 查詢的泛型委派。