DataGridViewCell.BorderWidths(DataGridViewAdvancedBorderStyle) Metodo
Definizione
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.
Restituisce una struttura Rectangle che rappresenta le larghezze di tutti i margini delle celle.
protected:
virtual System::Drawing::Rectangle BorderWidths(System::Windows::Forms::DataGridViewAdvancedBorderStyle ^ advancedBorderStyle);
protected virtual System.Drawing.Rectangle BorderWidths (System.Windows.Forms.DataGridViewAdvancedBorderStyle advancedBorderStyle);
abstract member BorderWidths : System.Windows.Forms.DataGridViewAdvancedBorderStyle -> System.Drawing.Rectangle
override this.BorderWidths : System.Windows.Forms.DataGridViewAdvancedBorderStyle -> System.Drawing.Rectangle
Protected Overridable Function BorderWidths (advancedBorderStyle As DataGridViewAdvancedBorderStyle) As Rectangle
Parametri
- advancedBorderStyle
- DataGridViewAdvancedBorderStyle
Classe DataGridViewAdvancedBorderStyle per la quale vengono calcolati i margini.
Restituisce
Struttura Rectangle che rappresenta le larghezze di tutti i margini delle celle.
Esempio
Nell'esempio di codice seguente viene illustrato come usare il BorderWidths metodo della classe per determinare l'area DataGridViewCell di disegno disponibile in una cella. Questo esempio di codice fa parte di un esempio più grande fornito in Procedura: Disabilitare i pulsanti in una colonna button nel controllo DataGridView Windows Forms.
protected override void Paint(Graphics graphics,
Rectangle clipBounds, Rectangle cellBounds, int rowIndex,
DataGridViewElementStates elementState, object value,
object formattedValue, string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
// The button cell is disabled, so paint the border,
// background, and disabled button for the cell.
if (!this.enabledValue)
{
// Draw the cell background, if specified.
if ((paintParts & DataGridViewPaintParts.Background) ==
DataGridViewPaintParts.Background)
{
SolidBrush cellBackground =
new SolidBrush(cellStyle.BackColor);
graphics.FillRectangle(cellBackground, cellBounds);
cellBackground.Dispose();
}
// Draw the cell borders, if specified.
if ((paintParts & DataGridViewPaintParts.Border) ==
DataGridViewPaintParts.Border)
{
PaintBorder(graphics, clipBounds, cellBounds, cellStyle,
advancedBorderStyle);
}
// Calculate the area in which to draw the button.
Rectangle buttonArea = cellBounds;
Rectangle buttonAdjustment =
this.BorderWidths(advancedBorderStyle);
buttonArea.X += buttonAdjustment.X;
buttonArea.Y += buttonAdjustment.Y;
buttonArea.Height -= buttonAdjustment.Height;
buttonArea.Width -= buttonAdjustment.Width;
// Draw the disabled button.
ButtonRenderer.DrawButton(graphics, buttonArea,
PushButtonState.Disabled);
// Draw the disabled button text.
if (this.FormattedValue is String)
{
TextRenderer.DrawText(graphics,
(string)this.FormattedValue,
this.DataGridView.Font,
buttonArea, SystemColors.GrayText);
}
}
else
{
// The button cell is enabled, so let the base class
// handle the painting.
base.Paint(graphics, clipBounds, cellBounds, rowIndex,
elementState, value, formattedValue, errorText,
cellStyle, advancedBorderStyle, paintParts);
}
}
Protected Overrides Sub Paint(ByVal graphics As Graphics, _
ByVal clipBounds As Rectangle, ByVal cellBounds As Rectangle, _
ByVal rowIndex As Integer, _
ByVal elementState As DataGridViewElementStates, _
ByVal value As Object, ByVal formattedValue As Object, _
ByVal errorText As String, _
ByVal cellStyle As DataGridViewCellStyle, _
ByVal advancedBorderStyle As DataGridViewAdvancedBorderStyle, _
ByVal paintParts As DataGridViewPaintParts)
' The button cell is disabled, so paint the border,
' background, and disabled button for the cell.
If Not Me.enabledValue Then
' Draw the background of the cell, if specified.
If (paintParts And DataGridViewPaintParts.Background) = _
DataGridViewPaintParts.Background Then
Dim cellBackground As New SolidBrush(cellStyle.BackColor)
graphics.FillRectangle(cellBackground, cellBounds)
cellBackground.Dispose()
End If
' Draw the cell borders, if specified.
If (paintParts And DataGridViewPaintParts.Border) = _
DataGridViewPaintParts.Border Then
PaintBorder(graphics, clipBounds, cellBounds, cellStyle, _
advancedBorderStyle)
End If
' Calculate the area in which to draw the button.
Dim buttonArea As Rectangle = cellBounds
Dim buttonAdjustment As Rectangle = _
Me.BorderWidths(advancedBorderStyle)
buttonArea.X += buttonAdjustment.X
buttonArea.Y += buttonAdjustment.Y
buttonArea.Height -= buttonAdjustment.Height
buttonArea.Width -= buttonAdjustment.Width
' Draw the disabled button.
ButtonRenderer.DrawButton(graphics, buttonArea, _
PushButtonState.Disabled)
' Draw the disabled button text.
If TypeOf Me.FormattedValue Is String Then
TextRenderer.DrawText(graphics, CStr(Me.FormattedValue), _
Me.DataGridView.Font, buttonArea, SystemColors.GrayText)
End If
Else
' The button cell is enabled, so let the base class
' handle the painting.
MyBase.Paint(graphics, clipBounds, cellBounds, rowIndex, _
elementState, value, formattedValue, errorText, _
cellStyle, advancedBorderStyle, paintParts)
End If
End Sub
Commenti
La larghezza predefinita del bordo della cella è un pixel. Usare i valori seguenti DataGridViewAdvancedCellBorderStyle per modificare la larghezza del bordo:
Il None valore indica una larghezza di 0 pixel.
I OutsetDouble valori o InsetDouble aumentano la larghezza predefinita di 1 pixel.
Inoltre, se la proprietà è impostata per la DividerHeight riga di proprietà della cella, l'altezza del rettangolo viene aumentata dal valore di DividerHeight. Se la proprietà è impostata per la DividerWidth colonna proprietaria della cella, la larghezza del rettangolo verrà aumentata dal valore di DividerWidth.