尝试在C＃中执行存储过程参数Entity Framework EDMX模型时出错

Question

我正在尝试执行我的存储过程，该存储过程需要13个参数，有些可以接受空值，有些始终是必需的。我收到两个确实接受null的日期参数的错误。

我遇到以下错误

System.Data.SqlClient.SqlException参数化查询'（（@recordType nvarchar（12），@ lotCreation位，@ licensePlateCreation'）需要参数'@lotManufactureDate'，该参数未提供。

这是当我从SQL Server数据库调用存储过程时edmx模型创建的存储过程代码，这里存储过程中名为licensePlateLookupCode的参数也允许为空，但是在代码中创建的emdx模型没有显示就像它可以为空-您知道为什么吗？

应该像Nullable<string> licensePlateLookupCode，而不是string licensePlateLookupCode。

  public virtual int AddFeedbackRequestsAgentInsert(string recordType, 
     Nullable<bool> lotCreation, Nullable<bool> licensePlateCreation, 
     Nullable<int> finishedGoodLineId, Nullable<int> lotid, string 
     lotLookupCode, Nullable<System.DateTime> lotManufactureDate, 
     Nullable<System.DateTime> lotExpirationDate, Nullable<decimal> 
     packagedAmount, Nullable<int> packagingId, string 
     licensePlateLookupCode, Nullable<int> licensePlateId, Nullable<int> 
     licensePlateLocationId)
    {
        var recordTypeParameter = recordType != null ?
            new ObjectParameter("recordType", recordType) :
            new ObjectParameter("recordType", typeof(string));

        var lotCreationParameter = lotCreation.HasValue ?
            new ObjectParameter("lotCreation", lotCreation) :
            new ObjectParameter("lotCreation", typeof(bool));

        var licensePlateCreationParameter = licensePlateCreation.HasValue ?
            new ObjectParameter("licensePlateCreation", licensePlateCreation) :
            new ObjectParameter("licensePlateCreation", typeof(bool));

        var finishedGoodLineIdParameter = finishedGoodLineId.HasValue ?
            new ObjectParameter("finishedGoodLineId", finishedGoodLineId) :
            new ObjectParameter("finishedGoodLineId", typeof(int));

        var lotidParameter = lotid.HasValue ?
            new ObjectParameter("lotid", lotid) :
            new ObjectParameter("lotid", typeof(int));

        var lotLookupCodeParameter = lotLookupCode != null ?
            new ObjectParameter("lotLookupCode", lotLookupCode) :
            new ObjectParameter("lotLookupCode", typeof(string));

        var lotManufactureDateParameter = lotManufactureDate.HasValue ?
            new ObjectParameter("lotManufactureDate", lotManufactureDate) :
            new ObjectParameter("lotManufactureDate", typeof(System.DateTime));

        var lotExpirationDateParameter = lotExpirationDate.HasValue ?
            new ObjectParameter("lotExpirationDate", lotExpirationDate) :
            new ObjectParameter("lotExpirationDate", typeof(System.DateTime));

        var packagedAmountParameter = packagedAmount.HasValue ?
            new ObjectParameter("packagedAmount", packagedAmount) :
            new ObjectParameter("packagedAmount", typeof(decimal));

        var packagingIdParameter = packagingId.HasValue ?
            new ObjectParameter("packagingId", packagingId) :
            new ObjectParameter("packagingId", typeof(int));

        var licensePlateLookupCodeParameter = licensePlateLookupCode != null ?
            new ObjectParameter("licensePlateLookupCode", licensePlateLookupCode) :
            new ObjectParameter("licensePlateLookupCode", typeof(string));

        var licensePlateIdParameter = licensePlateId.HasValue ?
            new ObjectParameter("licensePlateId", licensePlateId) :
            new ObjectParameter("licensePlateId", typeof(int));

        var licensePlateLocationIdParameter = licensePlateLocationId.HasValue ?
            new ObjectParameter("licensePlateLocationId", licensePlateLocationId) :
            new ObjectParameter("licensePlateLocationId", typeof(int));

        return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction("AddFeedbackRequestsAgentInsert", recordTypeParameter, lotCreationParameter, licensePlateCreationParameter, finishedGoodLineIdParameter, lotidParameter, lotLookupCodeParameter, lotManufactureDateParameter, lotExpirationDateParameter, packagedAmountParameter, packagingIdParameter, licensePlateLookupCodeParameter, licensePlateIdParameter, licensePlateLocationIdParameter);
    }

这里是我调用该存储过程的位置，然后在用户单击提交按钮后执行该存储过程，我认为lotmanufacturer和lotexpiration日期参数出现错误，因为它们是NULL，但是在实际的数据库存储过程中，它可以是否为空

    private void Btn_Submit_Click(object sender, EventArgs e)
    {
        // db context variable
        var context = _manufacturingDbContext;

        // ** Variables to insert to FootPrint stored procedure datex_footprint_integration.AddFeedbackRequestsAgentInsert with Record Type (FinishedGood)
        const string recordType = "FinishedGood";
        const bool lotCreation = false;
        const bool licensePlateCreation = true;           
        var finishedGoodLineId = context.FinishedGoodLineIdByOrderAndFinishedGoodAndLot(Cmb_MfgOrder.Text, Cmb_FgLookupCode.Text, Cmb_LotLookupCode.Text).FirstOrDefault();         
        var lotId = context.LotIdByManufacturingOrderAndFinishedGood(Cmb_MfgOrder.Text, Cmb_FgLookupCode.Text,Cmb_LotLookupCode.Text).FirstOrDefault();
        var doNotCreateLot = null;
        DateTime? lotManufactureDate = null;
        DateTime? lotExpirationDate = null;
        var packagedAmount = Convert.ToDecimal(Txt_PackagedAmount.Text);
        const int packagedId = 3;
        var licensePlateLookupCode = Txt_LicensePlateLookupCode.Text;
        int? licensePlateId = null;
        const int licensePlateLocationId = 51372;            

        // Call SQL Server SPROC dbo.AddFeedbackRequestsAgentInsert and enter data to FootPrint Task

        context.Database.ExecuteSqlCommand("EXEC dbo.AddFeedbackRequestsAgentInsert " +
                                           "@recordType, @lotCreation, @licensePlateCreation, @finishedGoodLineId, @lotid, @lotLookupCode, @lotManufactureDate," +
                                           "@lotExpirationDate, @packagedAmount, @packagingId, @licensePlateLookupCode, @licensePlateId, @licensePlateLocationId",
                             new SqlParameter("@recordType", recordType),
                                            new SqlParameter("@lotCreation", lotCreation),
                                            new SqlParameter("@licensePlateCreation", licensePlateCreation),
                                            new SqlParameter("@finishedGoodLineId", finishedGoodLineId),
                                            new SqlParameter("@lotid", lotId),
                                            new SqlParameter("@lotLookupCode", doNotCreateLot),
                                            new SqlParameter("@lotManufactureDate", lotManufactureDate),
                                            new SqlParameter("@lotExpirationDate", lotExpirationDate),
                                            new SqlParameter("@packagedAmount", packagedAmount),
                                            new SqlParameter("@packagingId", packagedId),
                                            new SqlParameter("@licensePlateLookupCode", licensePlateLookupCode),
                                            new SqlParameter("@licensePlateId", licensePlateId),
                                            new SqlParameter("@licensePlateLocationId", licensePlateLocationId)
                                            );

        context.SaveChanges();
}

这是实际的存储过程-如您所见，@lotManufactureDate和@lotExpirationDate确实允许空值：

CREATE PROCEDURE [dbo].[AddFeedbackRequestsAgentInsert]
         @recordType NVARCHAR(30),
         @lotCreation BIT,
         @licensePlateCreation BIT,
         @finishedGoodLineId INT,
         @lotid INT NULL,
         @lotLookupCode NVARCHAR(256) NULL,
         @lotManufactureDate DATETIME NULL,
         @lotExpirationDate DATETIME NULL,
         @packagedAmount DECIMAL(28,8),
         @packagingId INT,
         @licensePlateLookupCode NVARCHAR(256) NULL,
         @licensePlateId INT NULL,
         @licensePlateLocationId INT NULL

所以，我不明白为什么我传递这两个具有空日期的日期参数时会得到预期的错误，如果传递我为null的lotlookupcode参数，也会发生同样的事情，而我得到的期望是lotlookupcode 。您可以在这里看到问题所在吗？

我对代码进行了新的更改，现在我以前的请求描述没有得到该错误，但是现在当我调用存储过程来执行时，我在数据库上看不到任何内容，可以根据以下内容查看该内容我基于emdx模型提供的参数正确吗？

我是从模型浏览器导入函数存储过程中调用此函数的，当我按一下提交按钮时，数据库上什么也没收到，基于上述emdx模型和存储过程，参数看起来是否正确？

    var context = _manufacturingDbContext;


    const string recordType = "FinishedGood";
    const bool lotCreation = false;
    const bool licensePlateCreation = true;           
    var finishedGoodLineId = context.FinishedGoodLineIdByOrderAndFinishedGoodAndLot(Cmb_MfgOrder.Text, Cmb_FgLookupCode.Text, Cmb_LotLookupCode.Text).FirstOrDefault();         
    var lotId = context.LotIdByManufacturingOrderAndFinishedGood(Cmb_MfgOrder.Text, Cmb_FgLookupCode.Text,Cmb_LotLookupCode.Text).FirstOrDefault();
    var doNotCreateLot = null;
    DateTime? lotManufactureDate = null;
    DateTime? lotExpirationDate = null;
    var packagedAmount = Convert.ToDecimal(Txt_PackagedAmount.Text);
    const int packagedId = 3;
    var licensePlateLookupCode = Txt_LicensePlateLookupCode.Text;
    int? licensePlateId = null;
    const int licensePlateLocationId = 51372;    


        //calling stored procedure and send data to sproc based on the variables above
        context.AddFeedbackRequestsAgentInsert(recordType, lotCreation, licensePlateCreation, finishedGoodLineId,
            lotId, lot, lotManufactureDate, lotExpirationDate, packagedAmount, packagedId, licensePlateLookupCode,
            licensePlateId, licensePlateLocationId);

}

Answer 1

因此，您更新了数据库中的Stored Proc，但是您的数据模型不知道这些更改。您需要做的是也更新.net应用程序中的Entity FW。1-从数据库刷新（更新）EDMX。

2-右键单击概念模型（mode.context.tt）和（model.tt），然后单击（运行自定义工具）。将更新您的C＃映射数据模型以查看这些添加的新参数。

Answer 2

您可以直接调用EF生成的AddFeedbackRequestsAgentInsert方法并将参数传递给它。您可能不需要调用ontext.Database.ExecuteSqlCommand