C# 抑制状态错误CS1936找不到源类型“int”的查询模式的实现选择“未找到”

在过去的几个小时里，我一直在为这个错误绞尽脑汁，请在将它标记为副本之前，请仔细阅读这个问题，我和其他人都知道这可能被标记为副本，我甚至遇到了我自己多年前提出的问题，当时的解决方案是删除我的EDMX并重新生成它

找不到源类型“int”的查询模式的实现选择“未找到”

我在SSMS中编写了一个存储过程：

create procedure usp_GetMaterialByVendorID
    (@VendorID int)
AS
    SET NOCOUNT OFF
    SET TRANSACTION ISOLATION LEVEL READ COMMITTED

    DECLARE @ERROR_SEVERITY int,
            @MESSAGE varchar(1000),
            @ERROR_NUMBER int,
            @ERROR_PROCEDURE nvarchar(200),
            @ERROR_LINE int,
            @ERROR_MESSAGE nvarchar(4000);
    begin try
        select
            mat.MaterialID,
            mcat.MaterialCategoryID,
            mcat.MaterialCategory,
            mtype.MaterialType,
            mstype.MaterialSubType,
            mat.Description,
            mcost.Cost,
            mat.NewPrice,
            mat.RemodelPrice
        from 
            [Material] mat
        inner join 
            [MaterialCategory] mcat on mcat.MaterialCategoryID = mat.MaterialCategoryID
        inner join 
            [MaterialType] mtype on mtype.MaterialTypeID = mat.MaterialTypeID
        inner join 
            [MaterialSubType] mstype on mstype.MaterialSubTypeID = mat.MaterialSubTypeID
        inner join 
            [MaterialCost] mcost on mcost.MaterialID = mat.MaterialID
        where 
            mat.VendorID = @VendorID
    end try
    BEGIN CATCH
        SET @ERROR_SEVERITY = ISNULL(ERROR_SEVERITY(),'');
        SET @ERROR_NUMBER = ISNULL(ERROR_NUMBER(),'');
        SET @ERROR_PROCEDURE = ISNULL(ERROR_PROCEDURE(),''); 
        SET @ERROR_LINE = ISNULL(ERROR_LINE(),'');
        SET @ERROR_MESSAGE = ISNULL(ERROR_MESSAGE(),'');

        -- Test if the transaction is uncommittable.
        IF (XACT_STATE()) = -1
        BEGIN
            --PRINT N'The transaction is in an uncommittable state. Rolling back transaction.'
            ROLLBACK TRANSACTION;
        END;

        -- Test if the transaction is active and valid.
        IF (XACT_STATE()) = 1
        BEGIN
            --PRINT N'The transaction is committable. Committing transaction.'
            COMMIT TRANSACTION;   
        END;

        SET @MESSAGE = 'Error occurred in stored procedure ' + cast(@ERROR_PROCEDURE as varchar(200)) + 
                    '; Line Number ' + cast(@ERROR_LINE as varchar) + 
                    '; Message: [' + cast(@ERROR_NUMBER as varchar) + '] - '
                    + cast(@ERROR_MESSAGE as varchar(255))

        RAISERROR(@MESSAGE, @ERROR_SEVERITY, 1);
    END CATCH;

然后打开实体Framework.EDMX文件，从数据库中更新并添加存储过程。没问题

然后我进入我的DAL，在这里写下这个方法

public List<VendorMaterials> GetMaterialsByVendorID(int id)
{
        UsherEntities = new ExovationsUsherEntities();

        List<VendorMaterials> lst = new List<VendorMaterials>();

        var query = from a in UsherEntities.usp_GetMaterialByVendorID(id)
                    select a;
        return lst;
}

就是抛出错误的地方，所以我在usp_GetMaterialByVendorID上做了一个F12，找到了它，看了看，它看起来和我的其他版本一样

public virtual int usp_GetMaterialByVendorID(Nullable<int> vendorID)
{
        var vendorIDParameter = vendorID.HasValue ?
            new ObjectParameter("VendorID", vendorID) :
            new ObjectParameter("VendorID", typeof(int));

        return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction("usp_GetMaterialByVendorID", vendorIDParameter);
}

---

正如编译器试图告诉您的那样，在int上运行LINQ查询是没有意义的。只需调用该函数。您在导入SP时是否选择Complex作为返回类型？@SLaks，我已经在DAL中编写了30多次相同类型的方法。那么，你能详细阐述一下你的评论吗？此存储过程根据传递给itI的id返回多条记录我刚刚进行了编辑并添加了一个几乎相同的方法，该方法使用相同的内容和works@IvanStoev,我所做的只是打开EDMX文件并右键单击它，然后从数据库中选择Update Model并添加新创建的存储过程。编译器试图告诉您，在int上运行LINQ查询是没有意义的。只需调用该函数。导入SP时是否选择Complex作为返回类型？@SLaks，我已经在DAL中编写了30多次相同类型的方法。那么，你能详细阐述一下你的评论吗？此存储过程根据传递给itI的id返回多条记录我刚刚进行了编辑并添加了一个几乎相同的方法，该方法使用相同的内容和works@IvanStoev，我所做的就是打开EDMX文件并在其中右键单击，然后选择Update Model from Database并添加新创建的存储过程

public virtual int usp_GetMaterialByVendorID(Nullable<int> vendorID)
{
        var vendorIDParameter = vendorID.HasValue ?
            new ObjectParameter("VendorID", vendorID) :
            new ObjectParameter("VendorID", typeof(int));

        return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction("usp_GetMaterialByVendorID", vendorIDParameter);
}

public List<VendorContact> GetVendorContactsByVendorID(int id)
    {
        UsherEntities = new ExovationsUsherEntities();

        List<VendorContact> lst = new List<VendorContact>();

        var query = from a in UsherEntities.usp_GetVendorContactByID(id)
                    select a;

        foreach(var a in query)
        {
            lst.Add(new VendorContact
            {
                VendorID = a.VendorID,
                ContactID = a.ContactID,
                ContactName = a.ContactName,
                FirstName = a.FirstName,
                LastName = a.LastName,
                Phone = a.Phone,
                Cell = a.Cell,
                Fax = a.Fax,
                Email = a.Email
            });
        }

        return lst;
    }