DataGridViewCell.Paint 方法

参考

定义

命名空间:: System.Windows.Forms

程序集:: System.Windows.Forms.dll

重要

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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)

参数

graphics: Graphics

用于绘制 DataGridViewCell 的 Graphics。

clipBounds: Rectangle

一个 Rectangle，表示需要重新绘制的 DataGridView 区域。

cellBounds: Rectangle

一个 Rectangle，包含正在绘制的 DataGridViewCell 的边界。

rowIndex: Int32

当前所绘制的单元格的行索引。

cellState: DataGridViewElementStates

用于指定单元格状态的 DataGridViewElementStates 值的按位组合。

value: Object

正在绘制的 DataGridViewCell 的数据。

formattedValue: Object

正在绘制的 DataGridViewCell 的格式化数据。

errorText: String

与单元格关联的错误消息。

cellStyle: DataGridViewCellStyle

包含有关单元格的格式和样式信息的 DataGridViewCellStyle。

advancedBorderStyle: DataGridViewAdvancedBorderStyle

包含正在绘制的单元格的边框样式的 DataGridViewAdvancedBorderStyle。

paintParts: DataGridViewPaintParts

DataGridViewPaintParts 值的按位组合，用于指定需要绘制的单元格部分。

示例

下面的代码示例演示如何重写 Paint 方法 DataGridViewButtonCell。此代码示例是 How to： Disable Buttons in a Button Column in the Windows 窗体 DataGridView Control 中提供的较大示例的一部分。

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

适用于

DataGridViewCell.Paint 方法

定义

参数

示例

适用于

另请参阅

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