在我的MVC3中執行存儲過程時發生錯誤？

您好所有我有方法，其中i傳遞一些參數到存儲過程，當我執行它我得到這個錯誤在我的MVC3中執行存儲過程時發生錯誤？

[從物化「System.Int32」類型指定的強制轉換到「System.String」類型無效。]

我這是怎麼叫我的StoredProcedure

public JsonResult CreatedBugs() 
    { 
     int year; 
     int month; 
     int projectid; 
     year = 2012; 
     month = 8; 
     projectid = 16; 
     var loggedbugs = db.ExecuteStoreQuery<LoggedBugs>("LoggedBugs @Year,@Month,@ProjectID", new SqlParameter("@Year",year), new SqlParameter("@Month", month), new SqlParameter("@ProjectID", projectid)).ToList(); 
     var ClosedBugs = db.ExecuteStoreQuery<LoggedBugs>("ClosedBugs @Year,@Month,@ProjectID", new SqlParameter("@Year", year), new SqlParameter("@Month", month), new SqlParameter("@ProjectID", projectid)).ToList(); 
     var model = new LoggedBugs 
     { 
      LoggedBugsCount = loggedbugs, 
      ClosedBugs = ClosedBugs 
     }; 
     return Json(model, JsonRequestBehavior.AllowGet); 
    }

，這是我的StoredProcedure

 alter procedure LoggedBugs 
     (
     @Year int, 
     @Month int, 
     @ProjectID int 
    ) 
     as 
     begin 
     SELECT projectName, 
    ProjectYear, 
    ProjectMonth, 
     Week1, Week2, Week3, Week4, Week5 
      FROM (
Select p.projectName,YEAR(b.CreatedDate) ProjectYear, MONTH(b.CreatedDate) ProjectMonth, 
     'Week' + CAST(DATEDIFF(week, DATEADD(MONTH, DATEDIFF(MONTH, 0, b.CreatedDate), 0), b.CreatedDate)+1 AS VARCHAR) as [Weeks], 
     b.BUGID 
From BUGS b inner join projects p on b.ProjectId = p.ProjectId 
Where DatePart(year, CreatedDate) = @Year and datepart(month, Createddate) = @Month and b.projectid = @ProjectID 
) p 
    PIVOT (COUNT(BUGID) FOR [Weeks] IN (WEEK1, WEEK2, WEEK3, Week4, Week5)) AS pvt 
end

我在哪裏做錯了

EDIT1

這裏是我的LoggedBug類

public class LoggedBugs 
{ 
    public string projectName { get; set; } 
    public string ProjectYear { get; set; } 
    public string ProjectMonth { get; set; } 
    public string Week1 { get; set; } 
    public string Week2 { get; set; } 
    public string Week3 { get; set; } 
    public string Week4 { get; set; } 
    public string Week5 { get; set; } 
    public IEnumerable<LoggedBugs> LoggedBugsCount { get; set; } 
    public IEnumerable<LoggedBugs> ClosedBugs { get; set; } 
}

來源

2012-08-28 SoftwareNerd

您可以顯示LoggedBugs類代碼，也都有哪些SQL類型ProjectYear，ProjectMonth，Week1，Week2，Week4，Week4，Week5。我的猜測是，你的proc返回一個int，但LoggedBugs有它定義爲一個字符串類型 – nuhusky2003

@ nuhusky2003我已經更新了我的問題與LoggedBug類，我投爲VARCHAR的ProjectYear，ProjectMonth，Week1，Week2，Week4，Week4 ，第5周 – SoftwareNerd

它可以是問題ProjectYear和ProjectMonth。在數據庫方面，他們是int，因此在.NET方面，他們將propably拆箱爲System.Int32。在你的實體中，他們是string。嘗試在實體轉換爲varchar在SP或改變類型int。

來源

2012-08-28 18:03:09 Eligos

我試過了 – SoftwareNerd

更改您的ProjectYear和ProjectMonth屬性在LoggedBugs類int類型。您的SQL將它們作爲INT，看YEAR SQL MSDN description因爲年份和月份SQL函數int類型的兩個返回值。你的C＃代碼需要一個字符串，所以你會得到一個類型不匹配的異常。

來源

2012-09-03 21:15:28 nuhusky2003

在我的MVC3中執行存儲過程時發生錯誤？

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