Question

我通过以下代码向相应用户发送attachment邮件。

private void Form1_Load(object sender, EventArgs e)
    {
        Cls_Email_Sql ce = new Cls_Email_Sql();

        List<string> ls_attach = new List<string>();
        using (System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(SqlConn))
        {
            using (System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand())
            {
                cmd.CommandText = "GET_INWARD_REMINDER_REPORT";
                cmd.Connection = conn;
                cmd.CommandType = CommandType.StoredProcedure;
                conn.Open();
                System.Data.SqlClient.SqlDataAdapter adapter = new System.Data.SqlClient.SqlDataAdapter(cmd);

                DataSet ds = new DataSet();
                adapter.Fill(ds);
                conn.Close();

                DataTable tb_RA = ds.Tables[0];
                DataTable tb_User = ds.Tables[1];

                string strcolorHead = "#C0C0C0";
                string strcolorDet = "#C0C0C0";

                var groups = tb_RA.AsEnumerable().GroupBy(r => r.Field<string>("RAName"));  // grouping the RA column

                foreach (var group in groups)   // RA Table
                {
                    sbodyMail = "Dear " + group.Key + ", <br /><br />  " +

                    "As per the details available in the system, below are the summary  "+
                    "of number of documents lying with your reportees for more than five days. "+
                    "This is for your information and necessary action ";

                    sbodyMail += "<table style='width: 400px;font-size:12px;font-family: Arial, Helvetica, sans-serif;' " +
                                "border='0'><tr><td style='width: 100%;'></b><td></tr></table> " +

                                "<table style='width: 470px;font-size:12px; font-family: Arial, Helvetica, sans-serif;height: 53px' border='1'><tr> " +
                                "<td style='width: 30px; height: 14px;color:black;background-color:" + strcolorHead + " ;white-space:nowrap'><strong>SR No</strong></td> " +
                                    "<td style='width: 300px; height: 14px;color:black;background-color:" + strcolorHead + " ;white-space:nowrap'><strong>UserName</strong></td> " +
                                "<td style='width: 120px; height: 14px;color:black;background-color:" + strcolorHead + " ;white-space:nowrap'><strong>Document type</strong></td> " +
                                    "<td style='width: 20px; height: 14px;color:black;background-color:" + strcolorHead + " ;white-space:nowrap'><strong><div>No. of docs working </div><div> for more than five days</div></strong></td> ";

                    foreach (var row in group)
                    {
                        sbodyMail += "<tr>" +
                            "<td style='width: 30px; height: 14px;background-color:" + strcolorDet + "'>" + row["SR_No"].ToString() + " </td> " +
                            "<td style='width: 100px; height: 14px;background-color:" + strcolorDet + "'>" + row["userName"].ToString() + " </td> " +
                            "<td style='width: 100px; height: 14px;background-color:" + strcolorDet + "'>" + row["Document_Type"].ToString() + " </td> " +
                            "<td style='width: 100px; height: 14px;background-color:" + strcolorDet + "'>" + row["CountofDocNo"].ToString() + " </td> " +
                            "</tr>";
                    }



                    sbodyMail += "</table><br>" + //close of header

                        "<b>THIS IS A SYSTEM GENERATED MAIL. PLEASE DO NOT REPLY </b>";

                    string startupPath = "";
                    List<string> ls_attach1 = new List<string>();

                    MailMessage mail = new MailMessage();
                    startupPath = Environment.CurrentDirectory;

                    ls_attach1.Add(startupPath + "\\Attachment\\Reminder_Sheet.xls");
                    ExcelLibrary.DataSetHelper.CreateWorkbook(startupPath + "\\Attachment\\Reminder_Sheet.xls", ds);

                    foreach (var attach in ls_attach1)
                    {
                        mail.Attachments.Add(new Attachment(attach));
                    }
                    foreach (Attachment attachments in mail.Attachments)
                    {
                        attachments.Dispose();
                    }

                    ce.SendEmail("nadeem.khan@powersoft.in", "", "", "Information on documents for processing", sbodyMail,
                                 "AUTOSQL", "Powersoft", ls_attach1, "ConnectionString");

                }
    }

目前，每个用户都能够看到Excel表格中的所有数据。

应该是这样，用户只能看到它自己的数据。例如：

对于Ex：Chetan Mody应该只能在excel表中看到两行，但他能够查看所有记录。

我该怎么做？

Answer 1

以下是添加的代码段，您可以对DataSet

进行过滤

You can use DataTable.Select: 
var strExpr = "username = Maya Vaidya AND Ref_no = 8G";
var strSort = "Ref_date";

 // Use the Select method to find all rows matching the filter.
foundRows = ds.Table[0].Select(strExpr, strSort);

以上代码可用于过滤数据集，结果可用于创建需要在邮件中作为附件发送的Excel。

更新 1.首先填充主数据集现在触发查询以使用下面的代码

获取您想要过滤主数据集的过滤器值

 using (SqlConnection sourceConnection =
               new SqlConnection(connectionString))
    {
        sourceConnection.Open();
        SqlDataReader myReader = null;
        SqlCommand myCommand = new SqlCommand(
            "SELECT * FROM " +
            "dbo.Users group by user_Name;",
            sourceConnection);
        myReader = myCommand.ExecuteReader();
        while (myReader.Read())
        {
           //Get the record which you can use to filter the main Dataset 
           //apply the above code snippet shared to filter main Dataset.
           //Create Excel
           //Send Mail
        } 

    }

如何在制作Excel文件之前过滤DataSet中的数据？

1 个答案: