DataGridViewCell.Paint Метод

Определение

Пространство имен:

System.Windows.Forms

Сборка:

System.Windows.Forms.dll

Закрашивает текущую ячейку DataGridViewCell.

protected:
 virtual void Paint(System::Drawing::Graphics ^ graphics, System::Drawing::Rectangle clipBounds, System::Drawing::Rectangle cellBounds, int rowIndex, System::Windows::Forms::DataGridViewElementStates cellState, System::Object ^ value, System::Object ^ formattedValue, System::String ^ errorText, System::Windows::Forms::DataGridViewCellStyle ^ cellStyle, System::Windows::Forms::DataGridViewAdvancedBorderStyle ^ advancedBorderStyle, System::Windows::Forms::DataGridViewPaintParts paintParts);

protected virtual void Paint (System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, System.Windows.Forms.DataGridViewElementStates cellState, object value, object formattedValue, string errorText, System.Windows.Forms.DataGridViewCellStyle cellStyle, System.Windows.Forms.DataGridViewAdvancedBorderStyle advancedBorderStyle, System.Windows.Forms.DataGridViewPaintParts paintParts);

abstract member Paint : System.Drawing.Graphics * System.Drawing.Rectangle * System.Drawing.Rectangle * int * System.Windows.Forms.DataGridViewElementStates * obj * obj * string * System.Windows.Forms.DataGridViewCellStyle * System.Windows.Forms.DataGridViewAdvancedBorderStyle * System.Windows.Forms.DataGridViewPaintParts -> unit
override this.Paint : System.Drawing.Graphics * System.Drawing.Rectangle * System.Drawing.Rectangle * int * System.Windows.Forms.DataGridViewElementStates * obj * obj * string * System.Windows.Forms.DataGridViewCellStyle * System.Windows.Forms.DataGridViewAdvancedBorderStyle * System.Windows.Forms.DataGridViewPaintParts -> unit

Protected Overridable Sub Paint (graphics As Graphics, clipBounds As Rectangle, cellBounds As Rectangle, rowIndex As Integer, cellState As DataGridViewElementStates, value As Object, formattedValue As Object, errorText As String, cellStyle As DataGridViewCellStyle, advancedBorderStyle As DataGridViewAdvancedBorderStyle, paintParts As DataGridViewPaintParts)

Параметры

graphics

Graphics

Объект Graphics, используемый для закрашивания DataGridViewCell.

clipBounds

Rectangle

Объект Rectangle, представляющий область DataGridView, которую требуется перезакрасить.

cellBounds

Rectangle

Объект Rectangle, содержащий границы закрашиваемого DataGridViewCell.

rowIndex

Int32

Индекс строки, содержащей закрашиваемую ячейку.

cellState

DataGridViewElementStates

Побитовое сочетание значений DataGridViewElementStates, указывающее состояние ячейки.

value

Object

Данные закрашиваемой ячейки DataGridViewCell.

formattedValue

Object

Форматированные данные закрашиваемой ячейки DataGridViewCell.

errorText

String

Сообщение об ошибке, связанное с ячейкой.

cellStyle

DataGridViewCellStyle

Объект DataGridViewCellStyle, содержащий сведения о форматировании и стиле ячейки.

advancedBorderStyle

DataGridViewAdvancedBorderStyle

Объект DataGridViewAdvancedBorderStyle, содержащий стили границ для закрашиваемой ячейки.

paintParts

DataGridViewPaintParts

Побитовое сочетание значений DataGridViewPaintParts, определяющих, какие части ячейки требуется закрасить.

Примеры

В следующем примере кода показано, как переопределить Paint метод объекта DataGridViewButtonCell. Этот пример кода является частью более крупного примера, приведенного в разделе "Практическое руководство. Отключение кнопок в столбце кнопки" в элементе управления 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

См. также раздел

• DataGridView
• Paint
• PaintBorder(Graphics, Rectangle, Rectangle, DataGridViewCellStyle, DataGridViewAdvancedBorderStyle)
• Graphics
• Rectangle
• DataGridViewElementStates
• DataGridViewCellStyle
• DataGridViewAdvancedBorderStyle