DataView.Sort Egenskap

Definition

Namnområde:
System.Data
Sammansättning:
System.Data.dll
Sammansättning:
netstandard.dll

Hämtar eller anger sorteringskolumnen eller kolumnerna och sorteringsordningen DataViewför .

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

Egenskapsvärde

String

En sträng som innehåller kolumnnamnet följt av "ASC" (stigande) eller "DESC" (fallande). Kolumner sorteras stigande som standard. Flera kolumner kan avgränsas med kommatecken.

Attribut
DataSysDescriptionAttribute

Exempel

I följande exempel instrueras DataView att sortera tabellen efter två kolumner.

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

Kommentarer

Om du inte uttryckligen anger sorteringsvillkor för DataViewsorteras objekten DataRowView i DataView baserat på indexet för dess motsvarande DataRow i DataTable.RowsDataRowCollection.

Mer information finns i DataViews.

Gäller för

Se även