DataGridTextBoxColumn.Edit Método

Referência

Definição

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Importante

Algumas informações se referem a produtos de pré-lançamento que podem ser substancialmente modificados antes do lançamento. A Microsoft não oferece garantias, expressas ou implícitas, das informações aqui fornecidas.

Prepara uma célula para edição.

protected public:
 override void Edit(System::Windows::Forms::CurrencyManager ^ source, int rowNum, System::Drawing::Rectangle bounds, bool readOnly, System::String ^ instantText, bool cellIsVisible);

protected public:
 override void Edit(System::Windows::Forms::CurrencyManager ^ source, int rowNum, System::Drawing::Rectangle bounds, bool readOnly, System::String ^ displayText, bool cellIsVisible);

protected internal override void Edit (System.Windows.Forms.CurrencyManager source, int rowNum, System.Drawing.Rectangle bounds, bool readOnly, string instantText, bool cellIsVisible);

protected internal override void Edit (System.Windows.Forms.CurrencyManager source, int rowNum, System.Drawing.Rectangle bounds, bool readOnly, string displayText, bool cellIsVisible);

override this.Edit : System.Windows.Forms.CurrencyManager * int * System.Drawing.Rectangle * bool * string * bool -> unit

override this.Edit : System.Windows.Forms.CurrencyManager * int * System.Drawing.Rectangle * bool * string * bool -> unit

Protected Friend Overrides Sub Edit (source As CurrencyManager, rowNum As Integer, bounds As Rectangle, readOnly As Boolean, instantText As String, cellIsVisible As Boolean)

Protected Friend Overrides Sub Edit (source As CurrencyManager, rowNum As Integer, bounds As Rectangle, readOnly As Boolean, displayText As String, cellIsVisible As Boolean)

Parâmetros

source: CurrencyManager

O CurrencyManager do controle DataGrid ao qual a coluna pertence.

rowNum: Int32

O número de linha nesta coluna que está sendo editado.

bounds: Rectangle

O Rectangle delimitador no qual o controle deve ser localizado.

readOnly: Boolean

Um valor que indica se a coluna é somente leitura. true se o valor for somente leitura; caso contrário, false.

instantTextdisplayText: String

O texto a ser exibido no controle.

cellIsVisible: Boolean

Um valor que indica se a célula é visível. true se a célula estiver visível; caso contrário, false.

Exemplos

O exemplo a seguir usa o Edit método para alterar o texto de uma célula clicada no DataGrid controle.

public ref class MyGridColumn: public DataGridTextBoxColumn
{
public:
   void EditCol( CurrencyManager^ cm, int rowNum, Rectangle cellRect, bool readOnly, String^ myString, bool isVisible )
   {
      this->Edit( cm, rowNum, cellRect, readOnly, myString, isVisible );
   }

};

public ref class Form1: public Form
{
protected:
   DataGrid^ dataGrid1;
   DataSet^ myDataSet;
private:
   void dataGrid1_MouseDown( Object^ sender, MouseEventArgs^ e )
   {
      
      // Use the HitTest method to get a HitTestInfo object.
      DataGrid::HitTestInfo ^ hi;
      DataGrid^ grid = dynamic_cast<DataGrid^>(sender);
      hi = grid->HitTest( e->X, e->Y );
      
      // Test if the clicked area was a cell.
      if ( hi->Type == DataGrid::HitTestType::Cell )
      {
         
         // If it's a cell, get the GridTable and CurrencyManager of the
         // clicked table.         
         DataGridTableStyle^ dgt = dataGrid1->TableStyles[ 0 ];
         CurrencyManager^ cm = dynamic_cast<CurrencyManager^>(this->BindingContext[ myDataSet->Tables[ dgt->MappingName ] ]);
         
         // Get the Rectangle of the clicked cell.
         Rectangle cellRect = grid->GetCellBounds( hi->Row, hi->Column );
         
         // Get the clicked DataGridTextBoxColumn.
         MyGridColumn^ gridCol = dynamic_cast<MyGridColumn^>(dgt->GridColumnStyles[ hi->Column ]);
         
         // Edit the value.
         gridCol->EditCol( cm, hi->Row, cellRect, false, "New Text", true );
      }
   }

};

public class Form1: Form
{
protected DataGrid dataGrid1;
protected DataSet myDataSet;

private void dataGrid1_MouseDown(object sender, MouseEventArgs e)
{
    // Use the HitTest method to get a HitTestInfo object.
    DataGrid.HitTestInfo hi;   
    DataGrid grid = (DataGrid)sender;
    hi=grid.HitTest(e.X, e.Y);
    // Test if the clicked area was a cell.
    if (hi.Type == DataGrid.HitTestType.Cell)
    {
       // If it's a cell, get the GridTable and CurrencyManager of the
       // clicked table.         
       DataGridTableStyle dgt = dataGrid1.TableStyles[0];     
       CurrencyManager cm = (CurrencyManager)
        this.BindingContext[myDataSet.Tables[dgt.MappingName]];
       // Get the Rectangle of the clicked cell.
       Rectangle cellRect = grid.GetCellBounds(hi.Row, hi.Column);
       // Get the clicked DataGridTextBoxColumn.
       MyGridColumn gridCol =
       (MyGridColumn)dgt.GridColumnStyles[hi.Column];
       // Edit the value.
       gridCol.EditCol(cm, hi.Row, cellRect, false, "New Text", true);
    }
 }
}

public class MyGridColumn:DataGridTextBoxColumn{
   public void EditCol(CurrencyManager cm, int rowNum, 
      Rectangle cellRect, bool readOnly, 
      string myString, bool isVisible){
      this.Edit(cm, rowNum, cellRect, readOnly, myString, isVisible);
   }
}

Public Class Form1
   Inherits Form
   Protected dataGrid1 As DataGrid
   Protected myDataSet As DataSet
    
   
    Private Sub dataGrid1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)
        ' Use the HitTest method to get a HitTestInfo object.
        Dim hi As DataGrid.HitTestInfo
        Dim grid As DataGrid = CType(sender, DataGrid)
        hi = grid.HitTest(e.X, e.Y)
        ' Test if the clicked area was a cell.
        If hi.Type = DataGrid.HitTestType.Cell Then
            ' If it's a cell, get the GridTable and CurrencyManager of the
            ' clicked table.         
            Dim dgt As DataGridTableStyle = dataGrid1.TableStyles(0)
            Dim cm As CurrencyManager = CType _
            (Me.BindingContext(myDataSet.Tables(dgt.MappingName)), _
            CurrencyManager)
            ' Get the Rectangle of the clicked cell.
            Dim cellRect As Rectangle = _
            grid.GetCellBounds(hi.Row, hi.Column)
            ' Get the clicked DataGridTextBoxColumn.
            Dim gridCol As MyGridColumn = CType _
            (dgt.GridColumnStyles(hi.Column), MyGridColumn)
            ' Edit the value.
            gridCol.EditCol(cm, hi.Row, cellRect, False, "New Text", True)
        End If
    End Sub
End Class 

Public Class MyGridColumn
Inherits DataGridTextBoxColumn
   Public Sub EditCol(cm As CurrencyManager , rowNum As integer , _
   cellRect As Rectangle , bReadOnly As Boolean , _
   myString As String , isVisible As Boolean )
      me.Edit(cm, rowNum, cellRect, bReadOnly, myString, isVisible)
   End Sub
End Class

Comentários

Os Edit sites são um TextBox controle na grade no local da célula que está sendo editada. O método é chamado pelo DataGrid método da BeginEdit classe quando uma operação de edição está prestes a começar.

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