DataGridTextBoxColumn.Edit Metode

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Sumber:

DataGridTextBoxColumn.cs

Menyiapkan sel untuk pengeditan.

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 displayText, bool cellIsVisible);

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, displayText As String, cellIsVisible As Boolean)

Parameter

source

CurrencyManager

Kontrol CurrencyManager tempat DataGrid kolom berada.

rowNum

Int32

Nomor baris dalam kolom ini sedang diedit.

bounds

Rectangle

Batas Rectangle di mana kontrol akan disituskan.

readOnly

Boolean

Nilai yang menunjukkan apakah kolom adalah baca-saja. true jika nilainya baca-saja; jika tidak, false.

displayText

String

Teks yang akan ditampilkan dalam kontrol.

cellIsVisible

Boolean

Nilai yang menunjukkan apakah sel terlihat. true jika sel terlihat; jika tidak, false.

Contoh

Contoh berikut menggunakan Edit metode untuk mengubah teks sel yang diklik dalam DataGrid kontrol.

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

Keterangan

Edit Situs TextBox kontrol pada kisi di lokasi sel yang sedang diedit. Metode ini dipanggil oleh DataGrid metode kelas BeginEdit ketika operasi pengeditan akan dimulai.

Lihat juga

• DataGrid
• DataGridColumnStyle
• CurrencyManager