DataView.Sort Vlastnost

Definice

Získá nebo nastaví sloupec řazení nebo sloupce a pořadí řazení pro 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; }
[System.Data.DataSysDescription("DataViewSortDescr")]
public string Sort { get; set; }
member this.Sort : string with get, set
Public Property Sort As String

Hodnota vlastnosti

Řetězec obsahující název sloupce následovaný "ASC" (vzestupně) nebo "DESC" (sestupně).A string that contains the column name followed by "ASC" (ascending) or "DESC" (descending). Ve výchozím nastavení jsou sloupce seřazeny vzestupně.Columns are sorted ascending by default. Více sloupců lze oddělit čárkami.Multiple columns can be separated by commas.

Atributy

Příklady

Následující příklad instruuje DataView pro řazení tabulky podle dvou sloupců.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

Poznámky

Pokud explicitně neurčíte kritéria řazení pro DataView, jsou objekty DataRowView v DataView seřazeny podle indexu odpovídajícího DataRow 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.

Další informace naleznete v tématu DataViews.For more information, see DataViews.

Platí pro

Viz také