une ligne dupliquée (datagrid, datatable)

Bonjour,

Tu peux passer par LINQ to DataSet.
Code:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
// Fill the DataSet.
DataSet ds = new DataSet();
ds.Locale = CultureInfo.InvariantCulture;
FillDataSet(ds);
 
List<DataRow> rows = new List<DataRow>();
 
DataTable contact = ds.Tables["Contact"];
 
// Get 100 rows from the Contact table.
IEnumerable<DataRow> query = (from c in contact.AsEnumerable()
                              select c).Take(100);
 
DataTable contactsTableWith100Rows = query.CopyToDataTable();
 
// Add 100 rows to the list. 
foreach (DataRow row in contactsTableWith100Rows.Rows)
    rows.Add(row);
 
// Create duplicate rows by adding the same 100 rows to the list. 
foreach (DataRow row in contactsTableWith100Rows.Rows)
    rows.Add(row);
 
DataTable table =
    System.Data.DataTableExtensions.CopyToDataTable<DataRow>(rows);
 
// Find the unique contacts in the table.
IEnumerable<DataRow> uniqueContacts =
    table.AsEnumerable().Distinct(DataRowComparer.Default);
 
Console.WriteLine("Unique contacts:");
foreach (DataRow uniqueContact in uniqueContacts)
{
    Console.WriteLine(uniqueContact.Field<Int32>("ContactID"));
}
Autre alternative ici.