C＃中通過不同的值DataTable中

Question

循環我有一個數據表：

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

我在發送一個電子郵件爲每個獨特的人REP NAME

例如：

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

下一封郵件：

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

我想通過對REPNAME

類似唯一值的數據表就知道循環的最簡單的方法：

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

，然後我會遍歷DistinctList？

Answer 1

您應該使用GroupBy完成此任務。

更新：我已經重寫了代碼，以便您現在可以將它用於您的DataTable。

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"]))); 
}