DataGridColumnStyle.Edit Metodo

Riferimento

Definizione

Spazio dei nomi:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Prepara la cella per la modifica di un valore.

Overload

Edit(CurrencyManager, Int32, Rectangle, Boolean)	Prepara una cella per la modifica.
Edit(CurrencyManager, Int32, Rectangle, Boolean, String)	Prepara la cella per la modifica mediante i parametri dell'oggetto CurrencyManager, del numero di riga e dell'oggetto Rectangle specificati.
Edit(CurrencyManager, Int32, Rectangle, Boolean, String, Boolean)	Quando ne viene eseguito l'override in una classe derivata, prepara una cella per la modifica.

Edit(CurrencyManager, Int32, Rectangle, Boolean)

Prepara una cella per la modifica.

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

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

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

Protected Friend Overridable Sub Edit (source As CurrencyManager, rowNum As Integer, bounds As Rectangle, readOnly As Boolean)

Parametri

source: CurrencyManager

Oggetto CurrencyManager per l'oggetto DataGridColumnStyle.

rowNum: Int32

Numero di riga da modificare.

bounds: Rectangle

Oggetto Rectangle di delimitazione in cui deve essere situato il controllo.

readOnly: Boolean

Valore che indica se la colonna è di sola lettura. true se il valore è in sola lettura. In caso contrario, false.

Commenti

In genere, il Edit metodo trova un controllo nella griglia nella posizione della cella da modificare.

Si applica a

Edit(CurrencyManager, Int32, Rectangle, Boolean, String)

Prepara la cella per la modifica mediante i parametri dell'oggetto CurrencyManager, del numero di riga e dell'oggetto Rectangle specificati.

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

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

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

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

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

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

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

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

Parametri

source: CurrencyManager

Oggetto CurrencyManager per l'oggetto DataGridColumnStyle.

rowNum: Int32

Numero di riga in corso di modifica all'interno di questa colonna.

bounds: Rectangle

Oggetto Rectangle in cui deve essere situato il controllo.

readOnly: Boolean

Valore che indica se la colonna è di sola lettura. true se il valore è in sola lettura. In caso contrario, false.

instantTextdisplayText: String

Testo da visualizzare nel controllo.

Esempio

Nell'esempio di codice seguente viene usato il metodo per modificare il Edit testo di una cella selezionata nel System.Windows.Forms.DataGrid controllo.

public ref class Form1: public Form
{
private:
   DataSet^ myDataSet;
   void dataGrid1_MouseDown( Object^ sender, MouseEventArgs^ e )
   {
      // Use the HitTest method to get a HitTestInfo object.
      System::Windows::Forms::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 = grid->TableStyles[ 0 ];
         CurrencyManager^ myCurrencyManager = dynamic_cast<CurrencyManager^>(this->BindingContext[ myDataSet->Tables[ dgt->MappingName ] ]);

         // Get the Rectangle of the clicked cell.
         Rectangle cellRect;
         cellRect = grid->GetCellBounds( hi->Row, hi->Column );

         // Get the clicked DataGridTextBoxColumn.
         MyColumnStyle ^ gridCol = dynamic_cast<MyColumnStyle^>(dgt->GridColumnStyles[ hi->Column ]);

         // Edit the value.
         gridCol->EditVal( myCurrencyManager, hi->Row, cellRect, false, "New Text" );
      }
   }


public:
   ref class MyColumnStyle: public DataGridTextBoxColumn
   {
   public:
      void EditVal( CurrencyManager^ cm, int row, Rectangle rec, bool readOnly, String^ text )
      {
         this->Edit( cm, row, rec, readOnly, text );
      }
   };
};

public class Form1: Form
{
static void Main(){}

protected DataSet myDataSet;

private void dataGrid1_MouseDown(object sender, MouseEventArgs e)
{
    // Use the HitTest method to get a HitTestInfo object.
    System.Windows.Forms.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 = grid.TableStyles[0];     
       CurrencyManager myCurrencyManager = (CurrencyManager)
        this.BindingContext[myDataSet.Tables[dgt.MappingName]];
       // Get the Rectangle of the clicked cell.
       Rectangle cellRect;
       cellRect=grid.GetCellBounds(hi.Row, hi.Column);
       // Get the clicked DataGridTextBoxColumn.
       MyColumnStyle gridCol =(MyColumnStyle) 
       dgt.GridColumnStyles[hi.Column];
       // Edit the value.
       gridCol.EditVal(myCurrencyManager, hi.Row, cellRect, false, "New Text");
    }
 }

public class MyColumnStyle:DataGridTextBoxColumn{
    public void EditVal(CurrencyManager cm, int row, Rectangle rec, 
    bool readOnly, string text){
        this.Edit(cm, row, rec, readOnly, text);
    }
}
}

Public Class Form1
   Inherits Form

   Protected myDataSet As DataSet

   Shared Sub Main()
   End Sub
    
    Private Sub dataGrid1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)
        ' Use the HitTest method to get a HitTestInfo object.
        Dim hi As System.Windows.Forms.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 = grid.TableStyles(0)
            Dim myCurrencyManager As CurrencyManager = _
            CType(Me.BindingContext _
            (myDataSet.Tables(dgt.MappingName)), CurrencyManager)
            ' Get the Rectangle of the clicked cell.
            Dim cellRect As Rectangle
            cellRect = grid.GetCellBounds(hi.Row, hi.Column)
            ' Get the clicked DataGridTextBoxColumn.
            Dim gridCol As MyColumnStyle = CType(dgt.GridColumnStyles _
            (hi.Column), MyColumnStyle)
            ' Edit the value.
            gridCol.EditVal(myCurrencyManager, hi.Row, cellRect, False, "New Text")
        End If
    End Sub
End Class 

Public Class MyColumnStyle
   Inherits DataGridTextBoxColumn
   Public Sub EditVal(cm As CurrencyManager, row As Integer, _
   rec As Rectangle, bReadOnly As Boolean, text As String)
      MyBase.Edit(cm, row, rec, bReadOnly, text)
   End Sub
End Class

Commenti

In genere, il Edit metodo trova un controllo nella griglia nella posizione della cella da modificare.

Si applica a

Edit(CurrencyManager, Int32, Rectangle, Boolean, String, Boolean)

Quando ne viene eseguito l'override in una classe derivata, prepara una cella per la modifica.

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

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

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

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

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

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

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

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

Parametri

source: CurrencyManager

Oggetto CurrencyManager per l'oggetto DataGridColumnStyle.

rowNum: Int32

Numero di riga in corso di modifica all'interno di questa colonna.

bounds: Rectangle

Oggetto Rectangle in cui deve essere situato il controllo.

readOnly: Boolean

Valore che indica se la colonna è di sola lettura. true se il valore è in sola lettura. In caso contrario, false.

instantTextdisplayText: String

Testo da visualizzare nel controllo.

cellIsVisible: Boolean

Valore che indica se la cella è visibile. true se la cella è visibile; in caso contrario, false.

Commenti

In genere, il Edit metodo trova un controllo nella griglia nella posizione della cella da modificare.

Si applica a

DataGridColumnStyle.Edit Metodo

Definizione

Overload

Edit(CurrencyManager, Int32, Rectangle, Boolean)

Parametri

Commenti

Si applica a

Edit(CurrencyManager, Int32, Rectangle, Boolean, String)

Parametri

Esempio

Commenti

Si applica a

Edit(CurrencyManager, Int32, Rectangle, Boolean, String, Boolean)

Parametri

Commenti

Si applica a

Risorse aggiuntive