实体框架代码首先存储Proc语法错误/必须声明标量变量

Question

正在努力使存储过程从Web应用程序执行。 我可以验证值是否应该像应有的那样填充，但是我要么得到两个错误之一。

这是相关的代码，我也环顾了四周，并尝试了几种不同的解决方案，只是想知道为什么它不起作用。

// incorrect syntax near newCompany - have tried with both the parameter1 and parameter1.Value, parameter2 and parameter2.Value
public virtual int usp_TransferRecords(int oldCompany, int newCompany)
{
    SqlParameter parameter1 = new SqlParameter("OldCompany", oldCompany);
    SqlParameter parameter2 = new SqlParameter("NewCompany", newCompany);
    return ((IObjectContextAdapter)this).ObjectContext.ExecuteStoreCommand("usp_TransferRecords @OldCompany @NewCompany", parameter1, parameter2);
}

// Message = "Must declare the scalar variable \"@OldCompany\"." - have tried with both the parameter1 and parameter1.Value, parameter2 and parameter2.Value
public virtual int usp_TransferRecords(int oldCompany, int newCompany)
{
    SqlParameter parameter1 = new SqlParameter("OldCompany", oldCompany);
    SqlParameter parameter2 = new SqlParameter("NewCompany", newCompany);

    return ((IObjectContextAdapter)this).ObjectContext.ExecuteStoreCommand("usp_TransferRecords @OldCompany, @NewCompany", parameter1, parameter2);
}

这是存储过程：

CREATE PROCEDURE [dbo].[usp_TransferRecords]
    @OldCompany int,
    @NewCompany int
AS
BEGIN
    -- delete existing records from new company
    DELETE FROM [dbo].[Table] WHERE CompanyID = @NewCompany

    -- copy records from old company to new new company
    INSERT INTO [dbo].[Table] ([ID], [CompanyID], [City], [State], [Priority])
        SELECT NEWID(), @NewCompany, City, State, Priority
        FROM [dbo].[TABLE]
        WHERE CompanyID = @OldCompany

    -- reset record pages for both new and old companies
    SET NOCOUNT ON;

    -- deletes Dynamic Content Cache for both new and old companies
    DELETE FROM [dbo].[Table]
    WHERE CompanyID IN (@OldCompany, @NewCompany) 
      AND (ContentKey LIKE '%-generic-service-page' OR
           ContentKey LIKE '%-item-custom-service-page' OR
           ContentKey LIKE '%-about-page')

    -- deletes contents to so they will be regenerated
    DELETE FROM [dbo].[TABLE]
    WHERE CompanyID IN (@OldCompany, @NewCompany) 
      AND IsCityPage = 1
END

Web UI标记：

@using (Html.BeginForm(null, null, FormMethod.Post, new { id = "Form", enctype = "multipart/form-data" }))
{
    <h2 style="text-align:center"> This copy Records from old Company to new Company</h2>
    <div class="centered" style="width:400px">
    @Html.TextBox("oldCompany", id, new { onkeyup = "this.value=this.value.replace(/[^0-9]/g,'')", watermark = "Old Company #", @class = "watermark", style = "display:inline-block;" })
    @Html.TextBox("newCompany", String.Empty, new { onkeyup = "this.value=this.value.replace(/[^0-9]/g,'')", watermark = "New Company #", @class = "watermark", style = "display:inline-block;" })
    <input type="submit" name="submitButton" value="Copy" class="right orangebutton" style="position:absolute;left:62%;" />
    </div>
}

我通过更改以下内容使其正常工作

// Original
public virtual int usp_TransferRecords(int oldCompany, int newCompany)
{
    SqlParameter parameter1 = new SqlParameter("OldCompany", oldCompany);
    SqlParameter parameter2 = new SqlParameter("NewCompany", newCompany);
    return ((IObjectContextAdapter)this).ObjectContext.ExecuteStoreCommand("usp_TransferRecords @OldCompany, @NewCompany", parameter1, parameter2);
}

至：

// Working
public virtual int usp_TransferRecords(int oldCompany, int newCompany)
{
   var @params = new SqlParameter[]
   {
       new SqlParameter("OldCompany", oldCompany),
       new SqlParameter("NewCompany", newCompany)
   };
        return ((IObjectContextAdapter)this).ObjectContext.ExecuteStoreCommand("usp_TransferRecords @OldCompany, @NewCompany", @params);
}

如果有任何见解可以说明为什么这种方法优于其他原始方法。 谢谢所有回答。

Answer 1

// Message = "Must declare the scalar variable \"@OldCompany\"." - have tried with both the parameter1 and parameter1.Value, parameter2 and parameter2.Value
public virtual int usp_TransferRecords(int oldCompany, int newCompany)
{
    SqlParameter parameter1 = new SqlParameter("OldCompany", oldCompany);
    SqlParameter parameter2 = new SqlParameter("NewCompany", newCompany);
    return ((IObjectContextAdapter)this).ObjectContext.ExecuteStoreCommand("usp_CopyRecord @OldCompany, @NewCompany", parameter1, parameter2);
}

您的错误消息告诉您问题所在。

“必须声明标量变量\\“ @ OldCompany \\”。

"@OldCompany" != "OldCompany"

Answer 2

最终是这样

// Working
public virtual int usp_TransferRecords(int oldCompany, int newCompany)
{
   var @params = new SqlParameter[]
   {
       new SqlParameter("OldCompany", oldCompany),
       new SqlParameter("NewCompany", newCompany)
   };
   return ((IObjectContextAdapter)this).ObjectContext.ExecuteStoreCommand("usp_TransferRecords @OldCompany, @NewCompany", @params);
}