DataRowState DataRowState DataRowState DataRowState Enum

Definição

Obtém o estado de um objeto DataRow.Gets the state of a DataRow object.

Esta enumeração tem um atributo FlagsAttribute que permite uma combinação bit a bit dos seus valores membros.

public enum class DataRowState
[System.Flags]
public enum DataRowState
type DataRowState = 
Public Enum DataRowState
Herança
Atributos

Campos

Added Added Added Added 4

A linha foi adicionada a um DataRowCollection e AcceptChanges() não foi chamado.The row has been added to a DataRowCollection, and AcceptChanges() has not been called.

Deleted Deleted Deleted Deleted 8

A linha foi excluída usando o método Delete() do DataRow.The row was deleted using the Delete() method of the DataRow.

Detached Detached Detached Detached 1

A linha foi criada, mas não faz parte de nenhum DataRowCollection.The row has been created but is not part of any DataRowCollection. Um DataRow ficará nesse estado imediatamente depois de ser criado e antes de ser adicionado a uma coleção ou se ele tiver sido removido de uma coleção.A DataRow is in this state immediately after it has been created and before it is added to a collection, or if it has been removed from a collection.

Modified Modified Modified Modified 16

A linha foi modificada e AcceptChanges() não foi chamado.The row has been modified and AcceptChanges() has not been called.

Unchanged Unchanged Unchanged Unchanged 2

A linha não foi alterada desde a última chamada a AcceptChanges().The row has not changed since AcceptChanges() was last called.

Exemplos

O exemplo a seguir cria um novo DataTable com uma coluna, em seguida, cria um único DataRow.The following example first creates a new DataTable with one column, then creates a single DataRow. Como o DataRow é criado, adicionado, modificado e excluído, seu RowState é impresso.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 myTable = MakeTable();
   DataRow myRow;

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

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

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

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

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

private DataTable MakeTable(){
   // Make a simple table with one column.
   DataTable dt = new DataTable("myTable");
   DataColumn dcFirstName = new DataColumn("FirstName", Type.GetType("System.String"));
   dt.Columns.Add(dcFirstName);
   return dt;
}
Private Sub DemonstrateRowState()
    'Run a function to create a DataTable with one column.
    Dim dataTable As DataTable = MakeTable()
    Dim dataRow As DataRow

    ' Create a new DataRow.
    dataRow = dataTable.NewRow()
    ' Detached row.
    Console.WriteLine(String.Format("New Row {0}", dataRow.RowState))

    dataTable.Rows.Add(dataRow)
    ' New row.
    Console.WriteLine(String.Format("AddRow {0}", dataRow.RowState))

    dataTable.AcceptChanges()
    ' Unchanged row.
    Console.WriteLine(String.Format("AcceptChanges {0}", dataRow.RowState))

    dataRow("FirstName") = "Scott"
    ' Modified row.
    Console.WriteLine(String.Format("Modified {0}", dataRow.RowState))

    dataRow.Delete()
    ' Deleted row.
    Console.WriteLine(String.Format("Deleted {0}", dataRow.RowState))
End Sub

Private Function MakeTable() As DataTable
    ' Make a simple table with one column.
    Dim dt As New DataTable("dataTable")
    Dim firstName As New DataColumn("FirstName", _
       Type.GetType("System.String"))
    dt.Columns.Add(firstName)
    Return dt
End Function

Comentários

O DataRowState enumeração é retornada pelo RowState propriedade do DataRow classe.The DataRowState enumeration is returned by the RowState property of the DataRow class.

Aplica-se a

Veja também