從存儲過程獲取返回值-LINQ

Question

我想使用LINQ，EF獲得存儲過程中的返回值。 我已經看到了使用T-SQL的解決方案，但是該方法不能解決問題。 我需要用LINQ解決。

返回0我想根據結果取1和-1

存儲過程：

ALTER PROCEDURE [dbo].[Login]
    @inTcNu CHAR(11),
    @inPass NVARCHAR(MAX),
    @inIP NVARCHAR(40),
    @rolNu TINYINT OUTPUT,
    @kulNu INT OUTPUT
AS
BEGIN
    SELECT @kulNu = kullaniciID, @rolNu = rolID 
    FROM Kullanici WITH(NOLOCK) 
    WHERE tcNumarasi = @inTcNu AND parola = @inPass;

    IF @rolNu >= 0 AND @kulNu >= 0
    BEGIN
        INSERT INTO Oturum (tcNumarasi, oturumIP, parola, oturumZamani, girisBasarili)
        VALUES (@inTcNu, @inIP, @inPass, GETDATE(), 1);

        RETURN 1;
    END
    ELSE
    BEGIN
        INSERT INTO Oturum (tcNumarasi, oturumIP, parola, oturumZamani, girisBasarili)
        VALUES (@inTcNu, @inIP, @inPass, GETDATE(), 0);

        RETURN 0;
    END

    RETURN -1;
END

C＃，LINQ，EF

using (var ctx = new ktdbEntities())
{
    var IP = networkUtils.GetIP();
    var rolNu = new ObjectParameter("rolNu", typeof(int));
    var kulNu = new ObjectParameter("kulNu", typeof(int));

    var output = ctx.Login(model.tcNumarasi, model.parola, IP, rolNu, kulNu);

    object value1 = rolNu.Value;
    object value2 = kulNu.Value;
}

Answer 1

您不能像這樣從存儲過程中返回值。 您可以傳遞輸出參數來實現。

首先，我這樣修改了您的sp；

ALTER PROCEDURE [dbo].[Login]
    @inTcNu CHAR(11),
    @inPass NVARCHAR(MAX),
    @inIP NVARCHAR(40),
    @rolNu TINYINT OUTPUT,
    @kulNu INT OUTPUT,
    @result INT OUTPUT
AS
BEGIN
    SELECT @kulNu = kullaniciID, @rolNu = rolID 
    FROM Kullanici WITH(NOLOCK) 
    WHERE tcNumarasi = @inTcNu AND parola = @inPass;

    IF @rolNu >= 0 AND @kulNu >= 0
    BEGIN
        INSERT INTO Oturum (tcNumarasi, oturumIP, parola, oturumZamani, girisBasarili)
        VALUES (@inTcNu, @inIP, @inPass, GETDATE(), 1);

        set @result = 1;
    END
    ELSE
    BEGIN
        INSERT INTO Oturum (tcNumarasi, oturumIP, parola, oturumZamani, girisBasarili)
        VALUES (@inTcNu, @inIP, @inPass, GETDATE(), 0);

        set @result = 0;
    END

    set @result = -1;
END

然后我看不到ctx.Login方法，但我假設您正在其中執行存儲過程。

using (var ctx = new ktdbEntities())
{
    var IP = networkUtils.GetIP();
    var rolNu = new ObjectParameter("rolNu", typeof(int));
    var kulNu = new ObjectParameter("kulNu", typeof(int));
    var resultParam = new ObjectParameter("result", typeof(int));

    var output = ctx.Login(model.tcNumarasi, model.parola, IP, rolNu, kulNu,resultParam);

    object value1 = rolNu.Value;
    object value2 = kulNu.Value;
    object result = resultParam.Value; //Get output value
}