DataRow.RowState DataRow.RowState DataRow.RowState DataRow.RowState Property

Definition

Ruft den aktuellen Zustand der Zeile bezüglich ihrer Beziehung zur DataRowCollection ab.Gets the current state of the row with regard to its relationship to the DataRowCollection.

public:
 property System::Data::DataRowState RowState { System::Data::DataRowState get(); };
public System.Data.DataRowState RowState { get; }
member this.RowState : System.Data.DataRowState
Public ReadOnly Property RowState As DataRowState

Eigenschaftswert

Beispiele

Im folgenden Beispiel wird zunächst eine neue DataTable mit einer Spalte erstellt, und anschließend wird ein DataRoweinzelner erstellt.The following example first creates a new DataTable with one column, and then creates a single DataRow. Wenn erstellt DataRow , hinzugefügt, geändert und gelöscht wird RowState , wird das zugehörige gedruckt.As the DataRow is created, added, modified, and deleted, its RowState is printed.

   private void DemonstrateRowState()
   {
       // Run a function to create a DataTable with one column.
       DataTable table = MakeTable();
       DataRow row;

       // Create a new DataRow.
       row = table.NewRow();
       // Detached row.
       Console.WriteLine("New Row " + row.RowState);

       table.Rows.Add(row);
       // New row.
       Console.WriteLine("AddRow " + row.RowState);

       table.AcceptChanges();
       // Unchanged row.
       Console.WriteLine("AcceptChanges " + row.RowState);

       row["FirstName"] = "Scott";
       // Modified row.
       Console.WriteLine("Modified " + row.RowState);

       row.Delete();
       // Deleted row.
       Console.WriteLine("Deleted " + row.RowState);
   }

   private DataTable MakeTable()
   {
       // Make a simple table with one column.
       DataTable table = new DataTable("table");
       DataColumn dcFirstName = new DataColumn(
           "FirstName", Type.GetType("System.String"));
       table.Columns.Add(dcFirstName);
       return table;
   }
Private Sub DemonstrateRowState()
    ' Run a function to create a DataTable with one column.
    Dim table As DataTable = MakeTable()
    Dim row As DataRow 
 
    ' Create a new DataRow.
    row = table.NewRow()
    ' Detached row.
    Console.WriteLine("New Row " & row.RowState)
 
    table.Rows.Add(row)
    ' New row.
    Console.WriteLine("AddRow " & row.RowState)
 
    table.AcceptChanges()
    ' Unchanged row.
    Console.WriteLine("AcceptChanges " & row.RowState)
 
    row("FirstName") = "Scott"
    ' Modified row.
    Console.WriteLine("Modified " & row.RowState)
 
    row.Delete()
    ' Deleted row.
    Console.WriteLine("Deleted " & row.RowState)
 End Sub
 
 Private Function MakeTable() As DataTable
    ' Make a simple table with one column.
    Dim table As New DataTable("table")
    Dim dcFirstName As New DataColumn( _
        "FirstName", Type.GetType("System.String"))
    table.Columns.Add(dcFirstName)
    MakeTable = table
 End Function

Hinweise

Der Wert von RowState hängt von zwei Faktoren ab: die Art des Vorgangs wurde für die Zeile ausgeführt, und DataRowgibt an AcceptChanges , ob für aufgerufen wurde.The value of the RowState depends on two factors: the kind of operation has been performed on the row, and whether AcceptChanges has been called on the DataRow.

Gilt für:

Siehe auch