DataGrid.BeginEdit(DataGridColumnStyle, Int32) Método

Referencia

Definición

Espacio de nombres:: System.Windows.Forms

Ensamblado:: System.Windows.Forms.dll

Importante

Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.

Intenta asignarle a la cuadrícula un estado que permita su edición.

public:
 virtual bool BeginEdit(System::Windows::Forms::DataGridColumnStyle ^ gridColumn, int rowNumber);

public bool BeginEdit (System.Windows.Forms.DataGridColumnStyle gridColumn, int rowNumber);

abstract member BeginEdit : System.Windows.Forms.DataGridColumnStyle * int -> bool
override this.BeginEdit : System.Windows.Forms.DataGridColumnStyle * int -> bool

Public Function BeginEdit (gridColumn As DataGridColumnStyle, rowNumber As Integer) As Boolean

Parámetros

gridColumn: DataGridColumnStyle

DataGridColumnStyle que se va a editar.

rowNumber: Int32

Número de la fila que se va a editar.

Devoluciones

Boolean

true si el método es correcto; en caso contrario, false.

Implementaciones

BeginEdit(DataGridColumnStyle, Int32)

Ejemplos

En el ejemplo de código siguiente se usa el BeginEdit método para probar si es posible editar antes de cambiar una columna y una fila especificadas.

private:
   void EditGrid( DataGrid^ dataGrid1 )
   {
      // Get the selected row and column through the CurrentCell.
      int colNum;
      int rowNum;
      colNum = dataGrid1->CurrentCell.ColumnNumber;
      rowNum = dataGrid1->CurrentCell.RowNumber;
      // Get the selected DataGridColumnStyle.
      DataGridColumnStyle^ dgCol;
      dgCol = dataGrid1->TableStyles[ 0 ]->GridColumnStyles[ colNum ];
      // Invoke the BeginEdit method to see if editing can begin.
      if ( dataGrid1->BeginEdit( dgCol, rowNum ) )
      {
         // Edit row value. Get the DataTable and selected row.
         DataTable^ myTable;
         DataRow^ myRow;
         // Assuming the DataGrid is bound to a DataTable.
         myTable = (DataTable^)(dataGrid1->DataSource);
         myRow = myTable->Rows[ rowNum ];
         // Invoke the Row object's BeginEdit method.
         myRow->BeginEdit();
         myRow[ colNum ] = "New Value";
         // You must accept changes on both DataRow and DataTable.
         myRow->AcceptChanges();
         myTable->AcceptChanges();
         dataGrid1->EndEdit( dgCol, rowNum, false );
      }
      else
      {
         Console::WriteLine( "BeginEdit failed" );
      }
   }

private void EditGrid(DataGrid dataGrid1){
    // Get the selected row and column through the CurrentCell.
    int colNum;
    int rowNum;
    colNum = dataGrid1.CurrentCell.ColumnNumber;
    rowNum = dataGrid1.CurrentCell.RowNumber;
    // Get the selected DataGridColumnStyle.
    DataGridColumnStyle dgCol;
    dgCol = dataGrid1.TableStyles[0].GridColumnStyles[colNum];
    // Invoke the BeginEdit method to see if editing can begin.
    if (dataGrid1.BeginEdit(dgCol, rowNum)){
       // Edit row value. Get the DataTable and selected row.
       DataTable myTable;
       DataRow myRow;
       // Assuming the DataGrid is bound to a DataTable.
       myTable = (DataTable) dataGrid1.DataSource;
       myRow = myTable.Rows[rowNum];
       // Invoke the Row object's BeginEdit method.
       myRow.BeginEdit();
       myRow[colNum] = "New Value";
       // You must accept changes on both DataRow and DataTable.
       myRow.AcceptChanges();
       myTable.AcceptChanges();
       dataGrid1.EndEdit(dgCol, rowNum, false);
    }
    else{
      Console.WriteLine("BeginEdit failed");
    }
 }

Private Sub EditGrid(dataGrid1 As DataGrid)
    ' Get the selected row and column through the CurrentCell.
    Dim colNum As Integer
    Dim rowNum As Integer
    colNum = dataGrid1.CurrentCell.ColumnNumber
    rowNum = dataGrid1.CurrentCell.RowNumber
    ' Get the selected DataGridColumnStyle.
    Dim dgCol As DataGridColumnStyle
    dgCol = dataGrid1.TableStyles(0).GridColumnStyles(colNum)
    ' Invoke the BeginEdit method to see if editing can begin.
    If dataGrid1.BeginEdit(dgCol, rowNum) Then
        ' Edit row value. Get the DataTable and selected row.
        Dim myTable As DataTable
        Dim myRow As DataRow
        ' Assuming the DataGrid is bound to a DataTable.
        myTable = CType(dataGrid1.DataSource, DataTable)
        myRow = myTable.Rows(rowNum)
        ' Invoke the Row object's BeginEdit method.
        myRow.BeginEdit()
        myRow(colNum) = "New Value"
        ' You must accept changes on both DataRow and DataTable.
        myRow.AcceptChanges()
        myTable.AcceptChanges()
        dataGrid1.EndEdit(dgCol, rowNum, False)
    Else
        Console.WriteLine("BeginEdit failed")
    End If
End Sub

Comentarios

La cuadrícula denegará las solicitudes de edición si el usuario ya ha empezado a escribir en una celda. En ese caso, el BeginEdit método devolverá false.

Se aplica a

Consulte también

EndEdit(DataGridColumnStyle, Int32, Boolean)