DataView.Sort Właściwość

Definicja

Pobiera lub ustawia kolumnę sortowania lub kolumny, a także kolejność sortowania DataView .Gets or sets the sort column or columns, and sort order for the DataView.

public:
 property System::String ^ Sort { System::String ^ get(); void set(System::String ^ value); };
public string? Sort { get; set; }
public string Sort { get; set; }
[System.Data.DataSysDescription("DataViewSortDescr")]
public string Sort { get; set; }
member this.Sort : string with get, set
[<System.Data.DataSysDescription("DataViewSortDescr")>]
member this.Sort : string with get, set
Public Property Sort As String

Wartość właściwości

String

Ciąg, który zawiera nazwę kolumny, po której następuje wartość "ASC" (rosnąco) lub "DESC" (malejąco).A string that contains the column name followed by "ASC" (ascending) or "DESC" (descending). Kolumny są domyślnie sortowane rosnąco.Columns are sorted ascending by default. Wiele kolumn można rozdzielić przecinkami.Multiple columns can be separated by commas.

Atrybuty

Przykłady

Poniższy przykład powoduje, że DataView Sortuje tabelę według dwóch kolumn.The following example instructs the DataView to sort the table by two columns.

using System.Data;
using System;
public class A {
   static void Main(string[] args) {
      DataTable locationTable = new DataTable("Location");
      // Add two columns
      locationTable.Columns.Add("State");
      locationTable.Columns.Add("ZipCode");

      // Add data
      locationTable.Rows.Add("Washington", "98052");
      locationTable.Rows.Add("California", "90001");
      locationTable.Rows.Add("Hawaii", "96807");
      locationTable.Rows.Add("Hawaii", "96801");
      locationTable.AcceptChanges();

      Console.WriteLine("Rows in original order\n State \t\t ZipCode");
      foreach (DataRow row in locationTable.Rows) {
         Console.WriteLine(" {0} \t {1}", row["State"], row["ZipCode"]);
      }

      // Create DataView
      DataView view = new DataView(locationTable);

      // Sort by State and ZipCode column in descending order
      view.Sort = "State ASC, ZipCode ASC";

      Console.WriteLine("\nRows in sorted order\n State \t\t ZipCode");
      foreach (DataRowView row in view) {
         Console.WriteLine(" {0} \t {1}", row["State"], row["ZipCode"]);
      }
   }
}
Imports System.Data
Public Class A
   Public Shared Sub Main(args As String())
      Dim locationTable As New DataTable("Location")
      ' Add two columns
      locationTable.Columns.Add("State")
      locationTable.Columns.Add("ZipCode")

      ' Add data 
      locationTable.Rows.Add("Washington", "98052")
      locationTable.Rows.Add("California", "90001")
      locationTable.Rows.Add("Hawaii", "96807")
      locationTable.Rows.Add("Hawaii", "96801")
      locationTable.AcceptChanges()

      Console.WriteLine("Rows in original order" & vbLf & " State " & vbTab & vbTab & " ZipCode")
      For Each row As DataRow In locationTable.Rows
         Console.WriteLine(" {0} " & vbTab & " {1}", row("State"), row("ZipCode"))
      Next

      ' Create DataView
      Dim view As New DataView(locationTable)

      ' Sort by State and ZipCode column in descending order
      view.Sort = "State ASC, ZipCode ASC"

      Console.WriteLine(vbLf & "Rows in sorted order" & vbLf & " State " & vbTab & vbTab & " ZipCode")
      For Each row As DataRowView In view
         Console.WriteLine(" {0} " & vbTab & " {1}", row("State"), row("ZipCode"))
      Next
   End Sub
End Class

Uwagi

Jeśli nie określisz jawnie kryteriów sortowania dla DataView , DataRowView obiekty w DataView są sortowane na podstawie indeksu odpowiadającego DataRow w DataTable.Rows DataRowCollection .If you do not explicitly specify sort criteria for DataView, the DataRowView objects in DataView are sorted based on the index of its corresponding DataRow in the DataTable.Rows DataRowCollection.

Aby uzyskać więcej informacji, zobacz temat DataViews.For more information, see DataViews.

Dotyczy

Zobacz też