DataGridView重绘单元格中某些字体颜色,大小

主要通过对单元格进行重绘,改变元单元格字体大小和颜色

        protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e)
        {
            base.OnCellPainting(e);
            if (e.Value != null)
            {
                string cellWord = e.Value.ToString();//单元格原本内容
                string keyWord = e.Value.ToString();//要改变的单元格关键字内容

                Rectangle cellRect = e.CellBounds;//默认单元格
                Rectangle keyRect = e.CellBounds;//单元格内容区域，默认定义为单元格大小
                float fontSizeWeight = 96 / (72 / e.CellStyle.Font.Size); // 字体实际像素宽度
                float fontSizeHeight = 96 / (72 / e.CellStyle.Font.Size); // 字体实际像素高度
                //关键字的座标
                keyRect.X += cellWord.Substring(0, cellWord.IndexOf(keyWord)).Length * (int)(fontSizeWeight / 2);
                keyRect.Y += (e.CellBounds.Height - (int)fontSizeHeight) / 2;
                //原文本的Y座标
                cellRect.Y = keyRect.Y;

                using (Brush foreColor = new SolidBrush(e.CellStyle.ForeColor), fontColor = new SolidBrush(this.FontColor))
                {
                    //绘制背景色
                    e.PaintBackground(e.ClipBounds, false);
                    //绘制背景色(被选中状态下)
                    if (e.State == (DataGridViewElementStates.Displayed | DataGridViewElementStates.Selected | DataGridViewElementStates.Visible))
                        e.PaintBackground(e.ClipBounds, true);
                    //分别绘制原文本和现在改变颜色的文本
                    e.Graphics.DrawString(cellWord, this.Font, foreColor, cellRect, StringFormat.GenericDefault);
                    e.Graphics.DrawString(keyWord, this.Font, fontColor, keyRect, StringFormat.GenericDefault);
                    //提交事务
                    e.Handled = true;
                }
            }
        }

定义该重绘控件的字体,前景色和背景图片

        #region properties
        /// <summary>
        /// 获取或设置该控件下显示字体的大小.
        /// </summary>
        [Browsable(true)]
        [DefaultValue(typeof(Font), "宋体,9"), Description("获取或设置该控件下显示字体的大小.")]
        public override Font Font
        {
            get { return this._font; }
            set { this._font = value; }
        }
        /// <summary>
        /// 获取或设置当前字体颜色.
        /// </summary>
        [Description("获取或设置当前字体颜色.")]
        public Color FontColor
        {
            get { return this._fontColor; }
            set { this._fontColor = value; }
        }
        /// <summary>
        /// 获取或设置当前控件的背景图片.
        /// </summary>
        [DefaultValue(typeof(Image), ""), Description("获取或设置当前控件的背景图片.")]
        public Image BackImage
        {
            get { return this._backImage; }
            set { this._backImage = value; }
        }
        #endregion

以上代码仅供参考