C# Datagrid 发送行取决于 HTML 中的单元格值

Question

Datagrid 有点问题。

数据网格取自 SQL ->

要点是：
- 第一列有数字，
- 最后一列（第 8 列）包含电子邮件。

我想通过 Outlook（正文中的表格）发送 HTML 正文，其中包含行中的数据列表，其中第一列（数字）相同，用于存储在 8 日的电子邮件。在循环中向每个号码发送分组信息。

现在我在每封电子邮件中使用单独的行，但我需要从第一列（行列表）配置每个值的组。在我的示例下方：

con.Open();
String query = "xxxxxxxx";
SqlDataAdapter SDA = new SqlDataAdapter(query, con);
DataTable dt = new DataTable();
SDA.Fill(dt);
dataGridView1.DataSource = dt;
con.Close();
for (int i = 0; i < DataGridView.Rows.Count; ++i)
{
    1 = Convert.ToString(dataGridView1.Rows[i].Cells[1].Value);
    2 = Convert.ToInt32(dataGridView1.Rows[i].Cells[2].Value);
    3 = Convert.ToString(dataGridView1.Rows[i].Cells[3].Value);
    4 = Convert.ToString(dataGridView1.Rows[i].Cells[5].Value);
    5 = Convert.ToDouble(dataGridView1.Rows[i].Cells[6].Value).ToString("N");
    6 = Convert.ToDouble(dataGridView1.Rows[i].Cells[7].Value).ToString("N");
    7 = Convert.ToDouble(dataGridView1.Rows[i].Cells[8].Value).ToString("N");
    Outlook.Application app = new Outlook.Application();
    Outlook.MailItem mailItem = app.CreateItem(Outlook.OlItemType.olMailItem);
    mailItem.Subject = "xxx" + 1 + "xxx" + 2 + "xxx";
    mailItem.To = "xxxx@xxxxx";
    mailItem.HTMLBody = "aaaaaaaaa" + 1 + "bb: " + 2 + "vvvv."
    mailItem.Importance = Outlook.OlImportance.olImportanceHigh;
    mailItem.Display(false);
    ((Outlook._MailItem)mailItem).Send();
}

我已经尝试过：

string mailBody = "<table width='100%' style='border:Solid 1px Black;'>";
foreach (DataGridViewRow row in dataGridView1.Rows)
{
    mailBody += "<tr>";
    foreach (DataGridViewCell cell in row.Cells)
    {
        mailBody += "<td style='color:blue;'>" + cell.Value + "</td>";
    }
    mailBody += "</tr>";
}
mailBody += "</table>";
mailItem.HTMLBody = mailBody;

但在这种风格中，我将完整的 DataGrid 放入了电子邮件中。
你能帮我怎么做吗？

Answer 1

试试这个...

DataTable dt = dataGridView1.DataSource as DataTable;
//assuming your first columns name is 1...
var groups = dt.AsEnumerable().GroupBy(x => x["1"]);

foreach (var group in groups)
{
   // create your mailItem instance....

   string mailBody = "<table width='100%' style='border:Solid 1px Black;'>";

   List<string> mailsToSend = new List<string>();

   foreach (var row in group)
   {
       mailBody += "<tr>";

       mailItem.Recipients.add(row.ItemArray[7].toString());

       foreach (var cell in row.ItemArray)
       {
          mailBody += "<td style='color:blue;'>" + cell.ToString() + "</td>";

       }
       mailBody += "</tr>";
   }

   mailBody += "</table>";
   mailItem.HTMLBody = mailBody;

   //Send your mail....
}

更新

您可以创建一个包含唯一邮件的邮件列表...

foreach (var group in groups)
{
     // create your mailItem instance....


     List<string> mailsToSend = new List<string>();

     string mailBody = "<table width='100%' style='border:Solid 1px Black;'>";

      foreach (var row in group)
      {
          mailBody += "<tr>";

          // if not in the list, simply add...
          if (!mailsToSend.Contains(row.ItemArray[7].ToString()))
          {
             mailsToSend.Add(row.ItemArray[7].ToString());
          }

          foreach (var cell in row.ItemArray)
          {
             mailBody += "<td style='color:blue;'>" + cell.ToString() + "</td>";
          }
          mailBody += "</tr>";
     }

     //fill your recipients from your mail list...
     foreach (var mail in mailsToSend)
     {
        mailItem.Recipients.Add(mail);
     }

     mailBody += "</table>";
     mailItem.HTMLBody = mailBody;

     //Send your mail....
}

更新

只需 7 个单元格...

foreach (var cell in row.ItemArray.Take(7))
{
    mailBody += "<td style='color:blue;'>" + cell.ToString() + "</td>";
}