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

Das folgende Beispiel erstellt zuerst eine neue DataTable mit einer Spalte, und erstellt dann ein einzelnes DataRow.The following example first creates a new DataTable with one column, and then creates a single DataRow. Als die DataRow erstellt, hinzugefügt, geändert und gelöscht, wird die RowState gedruckt wird.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 DataTable = New DataTable("table")
    Dim dcFirstName As DataColumn = New DataColumn( _
        "FirstName", Type.GetType("System.String"))
    table.Columns.Add(dcFirstName)
    MakeTable = table
 End Function

Hinweise

Der Wert des der RowState hängt von zwei Faktoren ab: in der Zeile, die Art des Vorgangs ausgeführt wurde und ob AcceptChanges für aufgerufen wurde die DataRow.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