【WinForm】改变DataGridView的按钮的文字颜色

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;


/// <summary>
/// </summary>
public class MyDataGridViewButtonCell :
    DataGridViewButtonCell
{
    // By default, not set the color ot text.
    private bool isSetColor = false;
    private Color textColor;
    /// <summary>
    /// </summary>
    public Color TextColor
    {
        get
        {
            return textColor;
        }
        set
        {
            isSetColor = true;
            textColor = value;
        }
    }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="graphics"></param>
    /// <param name="clipBounds"></param>
    /// <param name="cellBounds"></param>
    /// <param name="rowIndex"></param>
    /// <param name="elementState"></param>
    /// <param name="value"></param>
    /// <param name="formattedValue"></param>
    /// <param name="errorText"></param>
    /// <param name="cellStyle"></param>
    /// <param name="advancedBorderStyle"></param>
    /// <param name="paintParts"></param>
    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 (isSetColor)
        {

            // 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.Default);

            // Draw the disabled button text. 
            if (this.FormattedValue is String)
            {
                TextRenderer.DrawText(graphics,
                    (string)this.FormattedValue,
                    this.DataGridView.Font,
                    buttonArea, this.textColor);
            }
        }
        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);
        }
    }
}