c＃循环遍历datatable中的不同值

Question

我有一个数据表：

+----------+--------+
| Rep Name | Volume |
+----------+--------+
| Alex     |      9 |
| Alex     |      1 |
| Alex     |      3 |
| Liza     |     24 |
| Liza     |     17 |
| Pam      |      0 |
| Pam      |      6 |
+----------+--------+

我正在为REP NAME

中的每个独特人发送一封电子邮件

示例：

Hi Alex, Today your volume was 9, and 1, and 3.

下一封电子邮件：

Hi Liza, Today your valume was 24, and 17.

我想知道在REPNAME

的唯一值上循环数据表的最简单方法

类似的东西：

 var DistinctList = datatable123.Select(x=> x.repname).Distinct();

然后我会循环通过DistinctList？

Answer 1

您应该使用GroupBy执行此任务。

更新：我已重写代码，现在您可以将其与DataTable一起使用。

var list = from x in datatable123.AsEnumerable()
           group x by (string) x["repname"] into g
           select g;

foreach (var x in list)
{
   Console.WriteLine("Hi {0}, Today your volume was {1}.", x.Key,
      String.Join(", and ", x.Select(p => p["volume"])));
}