C＃「System.IndexOutOfRangeException：有沒有一行位置0」時，使用存儲過程

Question

我有一個很奇怪的問題：

我使用一個存儲過程數據取出來的SQL的：

'CREATE PROCEDURE [dbo].[GET_RECMP_BY_PH_Code] 
@PH_Code NVARCHAR(50) 
AS 

SELECT Recurrent_PH_MP.Phase_Code AS Phase_Code, 
    MP_BGT.FY_Code AS Fiscal_Year, 
    MP_BGT.Budget_Type AS Budget_Type, 
    MP_BGT.Currency_Symbol AS Currency, 
    ISNULL(dbo.Get_RECEH_Days_BY_PHCode_FYCode(@PH_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type), 0) AS EH_Days, 
    ISNULL(dbo.Get_RECNH_Days_BY_PHCode_FYCode(@PH_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type), 0) AS NH_Days, 
    ISNULL(ROUND(dbo.Get_RECEH_Val_BY_PHCode_FYCode(@PH_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type),2), 0) AS EH_Previous_Amount, 
    ISNULL(ROUND(dbo.Get_RECNH_Val_BY_PHCode_FYCode(@PH_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type),2), 0) AS NH_Previous_Amount, 
    ISNULL(dbo.Get_Exchange_Rate(MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type),0) AS Rate_Used, 
    ISNULL(ROUND(dbo.Get_RECEH_Val_BY_PHCode_FYCode(@PH_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type)/dbo.Get_Exchange_Rate(MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type),2), 0) AS EH_Amount, 
    ISNULL(ROUND(dbo.Get_RECNH_Val_BY_PHCode_FYCode(@PH_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type)/dbo.Get_Exchange_Rate(MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type),2), 0) AS NH_Amount 
    FROM Recurrent_PH_MP_Budgets AS MP_BGT INNER JOIN Recurrent_PH_MP 
    ON MP_BGT.Recurrent_MP_Code=Recurrent_PH_MP.Recurrent_MP_Code 
    WHERE Recurrent_PH_MP.Phase_Code = @PH_Code GROUP BY Recurrent_PH_MP.Phase_Code, MP_BGT.FY_Code, MP_BGT.Currency_Symbol, MP_BGT.Budget_Type; 

的作用是：

public DataTable get_RECMP_BY_PH_Code(string PH_Code) 
{ 
    string res = string.Empty; 
    DataTable tb = new DataTable(); 
    try 
    { 
     using (var conn1 = DBConnectionUtil.Create()) 
     { 
      using (SqlCommand cmd = new SqlCommand("GET_RECMP_BY_PH_Code", conn1)) 
      { 
       cmd.CommandType = CommandType.StoredProcedure; 
       cmd.Parameters.AddWithValue("@PH_Code", PH_Code); 
       using (var da = new SqlDataAdapter()) 
       { 
        da.SelectCommand = cmd; 

        DataSet ds = new DataSet(); 
        da.Fill(ds, "RECMP_By_PH"); 
        da.Dispose(); 
        tb = ds.Tables[0]; 
       } 
      } 
     } 

    } 
    catch (Exception ex) 
    { 
     ExceptionHandler.HandleException(ex); 
    } 
    return tb; 
} 

當在代碼使用該：

DataTable tb_RECMP_Phase = dm.get_RECMP_BY_PH_Code(phase); 
int i = 0; 
if (tb_RECMP_Phase != null && tb_RECMP_Phase.Rows.Count > 0) 
{ 
    for (i = 0; i < tb_RECMP_Phase.Rows.Count; i++) 
    { 
     if (tb_RECMP_Phase.Rows[i]["EH_Days"] != null && tb_MP_Phase.Rows[i]["Fiscal_Year"].ToString() == "FY " + DateTime.Now.Year.ToString()) 
      phaseData.REC_BT_DAYS += Convert.ToDouble(tb_RECMP_Phase.Rows[i]["EH_Days"]); 
     if (tb_RECMP_Phase.Rows[i]["EH_Amount"] != null && tb_RECMP_Phase.Rows[i]["Fiscal_Year"].ToString() == "FY " + DateTime.Now.Year.ToString()) 
      phaseData.REC_BT_AMOUNT += Convert.ToDouble(tb_RECMP_Phase.Rows[i]["EH_Amount"]); 
     if (tb_RECMP_Phase.Rows[i]["NH_Days"] != null && tb_RECMP_Phase.Rows[i]["Fiscal_Year"].ToString() == "FY " + DateTime.Now.Year.ToString()) 
      phaseData.REC_OTHER_DAYS += Convert.ToDouble(tb_RECMP_Phase.Rows[i]["NH_Days"]); 
     if (tb_RECMP_Phase.Rows[i]["NH_Amount"] != null && tb_RECMP_Phase.Rows[i]["Fiscal_Year"].ToString() == "FY " + DateTime.Now.Year.ToString()) 
      phaseData.REC_OTHER_AMOUNT += Convert.ToDouble(tb_RECMP_Phase.Rows[i]["NH_Amount"]); 
    } 
} 

我得到錯誤：

[IndexOutOfRangeException：沒有排在位置0] System.Data.RBTree`1.GetNodeByIndex（的Int32 userIndex）2003383 System.Data.DataRowCollection。在C中的AssetMatrix.Default.BindData（））中的AssetMatrix.Default.BindData（） ：\ Users \ Andrei \ Desktop \ Asset Matrix 8 \ Asset_Matrix_8 \ AssetMatrix \ Default.aspx.cs：115 AssetMatrix.Default.Page_Load（Object sender，EventArgs e）位於C：\ Users \ Andrei \ Desktop \ Asset Matrix 8 \ Asset_Matr ix_8 \ AssetMatrix \ Default.aspx.cs：32 System.Web.Util.CalliEventHandlerDelegateProxy.Callback（對象發件人，EventArgs的）51 System.Web.UI.Control.OnLoad（EventArgs的）95 的System.Web .UI.Control.LoadRecursive（）+59 System.Web.UI.Page.ProcessRequestMain（布爾includeStagesBeforeAsyncPoint，布爾includeStagesAfterAsyncPoint）2952

** lthough *與調試我得到的值tb_RECMP_Phase.Rows[0]。

Answer 1

您正在檢查tb_RECMP_Phase中是否有行，但我沒有看到tb_MP_Phase的相同檢查。由於你幾乎消除了一行中零行的可能性，所以可能是另一行。