2

我有一个模型优先的 EF 模型。我刚刚导入了第一个存储过程：cpas_POIDVendorProjectDate

我将它作为函数导入。它具有三个输入参数：@ProjectID(int)、@VendorID(int)、 和@Workdate(datetime)，并返回@POID(int)。

这是SQL代码：

 CREATE PROCEDURE [dbo].[cpas_POIDVendorProjectDate]
    @VendorID int,
    @ProjectID int,
    @WorkDate datetime,
    @PO_ID int OUTPUT
 AS
 BEGIN
    SET NOCOUNT ON;

    DECLARE @RowCount int;

       SELECT @PO_ID = ID FROM tblPO WHERE 
        VendorID = @VendorID
        AND ExpirationDate >= @WorkDate
        AND (ProjectID IS NULL OR ProjectID = @ProjectID)
        AND CapitalExpense = (
          SELECT CapitalExpense FROM tblProjects WHERE ID=@ProjectID)
        AND GroupCode in (1,3,5);

     SET @RowCount = @@RowCount;

     IF (@RowCount != 1)
       SET @PO_ID = -1*@RowCount;

END

我在我的 c# 程序中调用它如下：

context.cpas_POIDVendorProjectDate(
    currVendorID, currProjectID, currWorkDate, currPOID);

Intellisense 说我对“上下文”的使用是错误的……它是一个“变量”，我将它用作“方法”。

此外，currPOID被拒绝，因为它正在寻找 a system.data.objects.OjbectParameter，而不是int. Intellisense 对函数名和其他参数很满意（奇怪的是……）

我在这里做错了什么？

4

2 回答 2

1

如果没有其他方法，您总是可以这样做：

using(var context = new MyDataContext())
{
    using(var cmd = context.Database.Connection.CreateCommand())
    {
        cmd.CommandText = "cpas_POIDVendorProjectDate";
        cmd.CommandType = CommandType.StoredProcedure;
        //if the stored proc accepts params, here is where you pass them in
        cmd.Parameters.Add(new SqlParameter("VendorId", 10));
        cmd.Parameters.Add(new SqlParameter("ProjectId", 12));
        cmd.Parameters.Add(new SqlParameter("WorkDate", DateTimw.Now));
        var poid = (int)cmd.ExecuteScalar();
    }
}
于 2013-02-08T19:06:30.840 回答
0

如果您想要一种面向对象的方式，那么Mindless 乘客 有一个项目，允许您从这样的实体框架调用存储的过程......

using (testentities te = new testentities())
{
    //-------------------------------------------------------------
    // Simple stored proc
    //-------------------------------------------------------------
    var parms1 = new testone() { inparm = "abcd" };
    var results1 = te.CallStoredProc<testone>(te.testoneproc, parms1);
    var r1 = results1.ToList<TestOneResultSet>();
}

...而且我正在开发一个存储过程框架（此处），您可以像下面显示的我的测试方法之一那样调用它...

[TestClass]
public class TenantDataBasedTests : BaseIntegrationTest
{
    [TestMethod]
    public void GetTenantForName_ReturnsOneRecord()
    {
        // ARRANGE
        const int expectedCount = 1;
        const string expectedName = "Me";

        // Build the paraemeters object
        var parameters = new GetTenantForTenantNameParameters
        {
            TenantName = expectedName
        };

        // get an instance of the stored procedure passing the parameters
        var procedure = new GetTenantForTenantNameProcedure(parameters);

        // Initialise the procedure name and schema from procedure attributes
        procedure.InitializeFromAttributes();

        // Add some tenants to context so we have something for the procedure to return!
        AddTenentsToContext(Context);

        // ACT
        // Get the results by calling the stored procedure from the context extention method 
        var results = Context.ExecuteStoredProcedure(procedure);

        // ASSERT
        Assert.AreEqual(expectedCount, results.Count);
    }
}

internal class GetTenantForTenantNameParameters
{
    [Name("TenantName")]
    [Size(100)]
    [ParameterDbType(SqlDbType.VarChar)]
    public string TenantName { get; set; }
}

[Schema("app")]
[Name("Tenant_GetForTenantName")]
internal class GetTenantForTenantNameProcedure
    : StoredProcedureBase<TenantResultRow, GetTenantForTenantNameParameters>
{
    public GetTenantForTenantNameProcedure(
        GetTenantForTenantNameParameters parameters)
        : base(parameters)
    {
    }
}

如果这两种方法中的任何一种都好？

于 2015-08-30T08:21:12.607 回答