VB.NET LINQ To DataTable Select with Where子句
这是我存储在数据表变量dt中的数据表:VB.NET LINQ To DataTable Select with Where子句,vb.net,linq,datatable,Vb.net,Linq,Datatable,这是我存储在数据表变量dt中的数据表: Dim dt As New DataTable +---------+--------+---------------+ | Carrier | AVGTAT | Name | +---------+--------+---------------+ | ABCD | 2078 | Term Check | | ABCD | 0 | AdHoc | | ABCD | 26406 |
Dim dt As New DataTable
+---------+--------+---------------+
| Carrier | AVGTAT | Name |
+---------+--------+---------------+
| ABCD | 2078 | Term Check |
| ABCD | 0 | AdHoc |
| ABCD | 26406 | Cash on Term |
| REWS | 7358 | Failed Bill |
| ZELT | 11585 | BL150 |
我需要使用LINQ to DataTable(基于其中Carrier=“x”和Name=“x”)获取AVGTAT列的值
我怎样才能做到这一点
谢谢大家! 这是C版本
这是C版本
var avg = (from t1 in dt.AsEnumerable()
select new
{
Carrier = t1.Field<string>("Carrier"),
Name = t1.Field<string>("Name"),
Avg = t1.Field<int>("AVGTAT")
}).Where(s => s.Carrier == "X" && s.Name == "X")
.Select(v=>v.Avg).FirstOrDefault();
Dim avg = dt.AsEnumerable().[Select](Function(x) New With {
Key .Carrier = x.Field(Of String)("Carrier"),
Key .Name = x.Field(Of String)("Name"),
Key .Avg = x.Field(Of Int32)("Level")
}).Where(Function(s) s.Carrier = "X" AndAlso s.Name = "X")
.[Select](Function(h) h.Avg).FirstOrDefault()