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DataGridTextBoxColumn.Edit Metoda

Definicja

Przygotowuje komórkę do edycji.

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)

Parametry

source
CurrencyManager

Kontrolka CurrencyManagerDataGrid , do którego należy kolumna.

rowNum
Int32

Numer wiersza w tej kolumnie jest edytowany.

bounds
Rectangle

Granica Rectangle , w której ma być lokacja kontrolki.

readOnly
Boolean

Wartość wskazująca, czy kolumna jest tylko do odczytu. true jeśli wartość jest tylko do odczytu; w przeciwnym razie , false.

instantTextdisplayText
String

Tekst do wyświetlenia w kontrolce.

cellIsVisible
Boolean

Wartość wskazująca, czy komórka jest widoczna. true jeśli komórka jest widoczna; w przeciwnym razie , false.

Przykłady

W poniższym przykładzie użyto Edit metody , aby zmienić tekst klikniętej komórki w kontrolce DataGrid .

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

Uwagi

TextBox Lokacje Edit kontrolki w siatce w lokalizacji edytowanej komórki. Metoda jest wywoływana BeginEdit przez DataGrid metodę klasy, gdy operacja edycji ma się rozpocząć.

Dotyczy

Zobacz też