DbFunctions.CreateTime 方法
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用於 LINQ to Entities 查詢時，此方法會叫用標準 EDM 函式 CreateTime 以建立新的 TimeSpan 物件。
命名空間： System.Data.Entity
組件： EntityFramework (在 EntityFramework.dll 中)
語法
'宣告
<SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId := "second")> _
<DbFunctionAttribute("Edm", "CreateTime")> _
<SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId := "hour")> _
<SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId := "minute")> _
Public Shared Function CreateTime ( _
hour As Nullable(Of Integer), _
minute As Nullable(Of Integer), _
second As Nullable(Of Double) _
) As Nullable(Of TimeSpan)
'用途
Dim hour As Nullable(Of Integer)
Dim minute As Nullable(Of Integer)
Dim second As Nullable(Of Double)
Dim returnValue As Nullable(Of TimeSpan)
returnValue = DbFunctions.CreateTime(hour, _
minute, second)
[SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "second")]
[DbFunctionAttribute("Edm", "CreateTime")]
[SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "hour")]
[SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "minute")]
public static Nullable<TimeSpan> CreateTime(
Nullable<int> hour,
Nullable<int> minute,
Nullable<double> second
)
[SuppressMessageAttribute(L"Microsoft.Usage", L"CA1801:ReviewUnusedParameters", MessageId = L"second")]
[DbFunctionAttribute(L"Edm", L"CreateTime")]
[SuppressMessageAttribute(L"Microsoft.Usage", L"CA1801:ReviewUnusedParameters", MessageId = L"hour")]
[SuppressMessageAttribute(L"Microsoft.Usage", L"CA1801:ReviewUnusedParameters", MessageId = L"minute")]
public:
static Nullable<TimeSpan> CreateTime(
Nullable<int> hour,
Nullable<int> minute,
Nullable<double> second
)
[<SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "second")>]
[<DbFunctionAttribute("Edm", "CreateTime")>]
[<SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "hour")>]
[<SuppressMessageAttribute("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "minute")>]
static member CreateTime :
hour:Nullable<int> *
minute:Nullable<int> *
second:Nullable<float> -> Nullable<TimeSpan>
public static function CreateTime(
hour : Nullable<int>,
minute : Nullable<int>,
second : Nullable<double>
) : Nullable<TimeSpan>
參數
- hour
類型：System.Nullable<Int32>
小時。
- minute
類型：System.Nullable<Int32>
分鐘。
- second
類型：System.Nullable<Double>
秒鐘，必要時可包括秒值的小數部分。
傳回值
類型：System.Nullable<TimeSpan>
新的時間範圍。
備註
您不可以直接呼叫此函式。 此函式只能出現在 LINQ to Entities 查詢內。 此函式會轉譯為資料庫中的對應函式。