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我不是程序员，但尝试从互联网上做一些研究。这里我尝试使用asp.net c#将excel数据导入sql数据库。我从 Internet 获得了一个关于此的概念，但我收到类似这样的错误消息“编译器错误消息：CS1501：方法'有效'没有重载需要 1 个参数”我的代码详细信息如下：

<table>
        <tr>
            <td>Loan History File Format :</td>
             <td><input type="button" value="Download" onclick='location.href = "CardDefaulterTemplete.xlsx#TableName"'/></td>
            <td rowspan="2">Before upload data, you must follow this file format. </td>
        </tr>
        <tr>
            <td> <asp:FileUpload ID="fileUpload1" runat="server" Visibl="False"/></td>
           <td> <asp:Button ID="btnCardDefaulter" runat="server" Text="Upload" 
        onclick="btnCardDefaulter_Click"/></td>
        </tr>
    </table>
<div>
    <asp:Button ID="btnExcel" runat="server" Text="Excel" 
        onclick="btnExcel_Click" />
        <asp:Label ID="lblmsg" runat="server" Width="500px"></asp:Label>

</div>

c#代码”

protected string valid(SqlDataReader myreader, int stval)//if any columns are found null then they are replaced by zero
    {
        object val = myreader[stval];
        if (val != DBNull.Value)
            return val.ToString();
        else
            return Convert.ToString(0);
    }

    public void insertdataintosql(string LHAcNo, string LhAcName, int LHIntRate, string LHDrawingPower, int LHtotalDisbAmt
                            , int LHEMI, string LHExpiryDate, string LHSanctionDate, string LHDisbDate, int LHOutstandingAmt, int LHPaidAmt
                            , int LHLastMonthPaid, string LHStatus, string LhCLStatus)
    {
        using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["OptimaWebCustomerQueryCon"].ConnectionString))
        {
            conn.Open();
            string str = @"insert TblLoanHistory (LHAcNo
                        ,LhAcName
                        ,LHIntRate
                        ,LHDrawingPower
                        ,LHtotalDisbAmt
                        ,LHEMI
                        ,LHExpiryDate
                        ,LHSanctionDate
                        ,LHDisbDate
                        ,LHOutstandingAmt
                        ,LHPaidAmt
                        ,LHLastMonthPaid
                        ,LHStatus
                        ,LhCLStatus) values(@LHAcNo
                        ,@LhAcName
                        ,@LHIntRate
                        ,@LHDrawingPower
                        ,@LHtotalDisbAmt
                        ,@LHEMI
                        ,@LHExpiryDate
                        ,@LHSanctionDate
                        ,@LHDisbDate
                        ,@LHOutstandingAmt
                        ,@LHPaidAmt
                        ,@LHLastMonthPaid
                        ,@LHStatus
                        ,@LhCLStatus)";

           using (SqlCommand cmd = new SqlCommand(str, conn))
           {
                cmd.Parameters.Add("@LHAcNo",LHAcNo);
                cmd.Parameters.Add("@LhAcName",LhAcName);
                cmd.Parameters.Add("@LHIntRate",LHIntRate);
                cmd.Parameters.Add("@LHDrawingPower",LHDrawingPower);
                cmd.Parameters.Add("@LHtotalDisbAmt",LHtotalDisbAmt);
                cmd.Parameters.Add("@LHEMI",LHEMI);
                cmd.Parameters.Add("@LHExpiryDate",LHExpiryDate);
                cmd.Parameters.Add("@LHSanctionDate",LHSanctionDate);
                cmd.Parameters.Add("@LHDisbDate",LHDisbDate);
                cmd.Parameters.Add("@LHOutstandingAmt",LHOutstandingAmt);
                cmd.Parameters.Add("@LHPaidAmt",LHPaidAmt);
                cmd.Parameters.Add("@LHLastMonthPaid",LHLastMonthPaid);
                cmd.Parameters.Add("@LHStatus",LHStatus);
                cmd.Parameters.Add("@LhCLStatu",LhCLStatus);
                cmd.ExecuteNonQuery();
           }
                conn.Close();
        }
    }


    protected void btnExcel_Click(object sender, EventArgs e)
    {
        using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["OptimaWebCustomerQueryCon"].ConnectionString))

        try
        {
            string tmpPath = string.Format(@"{0}{1}.xlsx", (@"e:\temp\"), DateTime.Now.ToString("ddMMyyyy"));
            if (File.Exists(tmpPath)) File.Delete(tmpPath);
            if (fileUpload1.HasFile)
                fileUpload1.SaveAs(tmpPath);
            FileInfo file = new FileInfo(tmpPath);
            ExcelPackage pkg = new ExcelPackage(file);
            var excelApp = pkg.Workbook.Worksheets["main_info"];

            using (SqlCommand com = new SqlCommand("select LHAcNo, LhAcName, LHIntRate, LHDrawingPower, LHtotalDisbAmt, LHEMI, LHExpiryDate, LHSanctionDate, LHDisbDate, LHOutstandingAmt, LHPaidAmt, LHLastMonthPaid, LHStatus, LhCLStatus from [Template$]", conn))
            {
                conn.Open();
                using (SqlDataReader dr = com.ExecuteReader())
                {

                    string Call_LHAcNo = "";
                    string Call_LhAcName = "";
                    int Call_LHIntRate = 0;
                    string Call_LHDrawingPower = "";
                    int Call_LHtotalDisbAmt = 0;
                    int Call_LHEMI = 0;
                    string Call_LHExpiryDate = "";
                    string Call_LHSanctionDate = "";
                    string Call_LHDisbDate = "";
                    int Call_LHOutstandingAmt =0;
                    int Call_LHPaidAmt =0;
                    int Call_LHLastMonthPaid = 0;
                    string Call_LHStatus = "";
                    string Call_LhCLStats = "";
                    while (dr.Read())
                    {
                        Call_LHAcNo = valid(dr[1]); 
                        Call_LhAcName = valid(dr[2]);
                        Call_LHIntRate = valid(dr[3]);
                        Call_LHDrawingPower = valid(dr[4]);
                        Call_LHtotalDisbAmt = valid(dr[5]);
                        Call_LHEMI = valid(dr[6]);
                        Call_LHExpiryDate = valid(dr[7]);
                        Call_LHSanctionDate = valid(dr[8]);
                        Call_LHDisbDate = valid(dr[9]);
                        Call_LHOutstandingAmt = valid(dr[10]);
                        Call_LHPaidAmt = valid(dr[11]);
                        Call_LHLastMonthPaid = valid(dr[12]);
                        Call_LHStatus = valid(dr[13]);
                        Call_LhCLStats = valid(dr[14]);

                        insertdataintosql(Call_LHAcNo,
                            Call_LhAcName,
                            Call_LHIntRate,
                            Call_LHDrawingPower,
                            Call_LHtotalDisbAmt,
                            Call_LHEMI,
                            Call_LHExpiryDate,
                            Call_LHSanctionDate,
                            Call_LHDisbDate,
                            Call_LHOutstandingAmt,
                            Call_LHPaidAmt,
                            Call_LHLastMonthPaid,
                            Call_LHStatus,
                            Call_LhCLStats);
                    }
                    conn.Close();
                }
            }
        }
        catch (DataException ee)
        {
            lblmsg.Text = ee.Message;
            lblmsg.ForeColor = System.Drawing.Color.Red;
        }
        finally
        {
            lblmsg.Text = "Data Inserted Sucessfully";
            lblmsg.ForeColor = System.Drawing.Color.Green;
        }
    }

我对“ protected string valid(SqlDataReader myreader, int stval)”和“下”protected void btnExcel_Click(object sender, EventArgs e)从 excel 导入日期和处理 while 循环感到困惑。

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1 回答 1

0

您在代码中的某个位置使用一个参数调用方法 valid()。请确保将两个参数传递给 valid() 函数。

在您的代码中，您正在调用这样的有效函数。

Call_LHAcNo = valid(dr[1]);

但在有效函数中接受两个参数有效（SqlDataReader myreader，int stval）

您需要为函数提供两个参数或将函数更改为一个参数。

于 2013-09-03T07:27:07.413 回答