首先，建立绘图类，如下：
        /// <summary>
        /// 绘制柱状图
        /// </summary>
        /// <param name="ds">DataTable中第一列为数据列，第二列为对应的名称</param>
        /// <param name="xName">X轴名称</param>
        /// <param name="yName">Y轴名称</param>
        /// <returns>位图对象</returns>
        public Bitmap GetDrawRectangleForStat(DataSet ds, string xName, string yName)
        {
            Bitmap cBmp = new Bitmap(471, 367);  //创建画布宽度为471，高度为367的Bitmap实例
            Graphics cGraphic;
            Color[] cColor = new Color[] { Color.Red, Color.Blue, Color.Green, Color.Gray, Color.LightCoral, Color.Gold, Color.Brown, Color.Cyan, Color.Lime, Color.Peru, Color.Magenta, Color.Sienna, Color.Chocolate, Color.PeachPuff, Color.Orange, Color.DarkGoldenrod, Color.Olive, Color.DarkSeaGreen, Color.SpringGreen, Color.Teal, Color.CadetBlue, Color.RoyalBlue, Color.DeepPink, Color.LightGray, Color.MediumVioletRed, Color.Orchid, Color.MediumSlateBlue, Color.White, Color.LightSteelBlue, Color.DarkSlateGray, Color.GreenYellow, Color.DarkKhaki, Color.RosyBrown, Color.Navy, Color.Indigo, Color.HotPink };  //36种颜色

            Pen cPen;
            SolidBrush cSolidBrush;
            Font bFont = new Font("Tahoma", 14, FontStyle.Bold);  //轴标字体
            Font sFont = new Font("Tahoma", 14, FontStyle.Bold);  //统计数值字体
            Font fFont = new Font("Tahoma", 14, FontStyle.Bold);  //统计项值字体

            StringFormat cFormat = new StringFormat();
            RectangleF cRect;
            int RowNum = 0;
            int iLoop = 0;
            int i = 0;
            int cValue = 0;
            int MaxValue = 0;

            //定义Y轴，Y上(42,15)～Y下(42,317)，Y轴长从17到317共300
            int xPu = 42;  //Y轴上(Up)点X坐标
            int yPu = 15;  //Y轴上(Up)点Y坐标
            int xPd = 42;  //Y轴下(Down)点X坐标
            int yPd = 317;  //Y轴下(Down)点Y坐标

            //定义X轴，X左(42,317)～X右(448,317)，X轴上从42到448共406
            int xPl = 42;  //X轴左(Left)点X坐标
            int yPl = 317;  //X轴左(Left)点Y坐标
            int xPr = 448;  //X轴右(Right)点X坐标
            int yPr = 317;  //X轴右(Right)点Y坐标

            //定义柱图
            //int xStart = 57;  //首根柱图开始的X轴坐标
            //int cWidth = 20;  //柱图宽度
            //int cSpace = 15;  //柱图间距
            int xStart = 67;  //首根柱图开始的X轴坐标
            int cWidth = 40;  //柱图宽度
            int cSpace = 25;  //柱图间距

            cGraphic = Graphics.FromImage(cBmp);
            cGraphic.Clear(Color.Snow);

            //画轴线
            cPen = new Pen(Color.Black, 3);
            cSolidBrush = new SolidBrush(Color.Black);
            cGraphic.DrawLine(cPen, xPu, yPu, xPd, yPd);  //Y轴
            cGraphic.DrawLine(cPen, xPl, yPl, xPr, yPr);  //X轴

            //画轴向
            cGraphic.DrawLine(cPen, xPu, yPu - 3, xPu - 4, yPu + 3);   //Y轴向
            cGraphic.DrawLine(cPen, xPu, yPu - 3, xPu + 4, yPu + 3);
            cGraphic.DrawLine(cPen, xPr + 3, yPr, xPr - 4, yPr - 3);  //X轴向
            cGraphic.DrawLine(cPen, xPr + 3, yPr, xPr - 4, yPr + 3);

            //画轴标
            cFormat.FormatFlags = StringFormatFlags.NoClip;
            cGraphic.DrawString(yName, bFont, cSolidBrush, 5, 45, cFormat);   //Y轴标
            cGraphic.DrawString(xName, bFont, cSolidBrush, 392, 332, cFormat);  //X轴标

            //画轴心值
            cGraphic.DrawString("0", sFont, cSolidBrush, xPd - 5, yPd + 3, cFormat);

            RowNum = ds.Tables[0].Rows.Count - 1;

            for (i = 0; i <= RowNum; i++)
            {
                if (MaxValue < Int32.Parse(ds.Tables[0].Rows[i][0].ToString()))
                {
                    MaxValue = Int32.Parse(ds.Tables[0].Rows[i][0].ToString());
                }

                //画柱图
                cPen = new Pen(cColor[i], 3);
                cSolidBrush = new SolidBrush(cColor[i]);
                cValue = Int32.Parse(ds.Tables[0].Rows[i][0].ToString()) * ((yPd - yPu) / MaxValue);
                cGraphic.DrawRectangle(cPen, xStart + (cWidth + cSpace) * iLoop, yPd - cValue, cWidth, cValue - 2);  //减2的目的：使柱图的下边沿不挡住X轴
                cGraphic.FillRectangle(cSolidBrush, xStart + (cWidth + cSpace) * iLoop, yPd - cValue, cWidth, cValue - 2);

                //画柱图统计Y轴值
                cGraphic.DrawString(ds.Tables[0].Rows[i][0].ToString(), sFont, cSolidBrush, xStart + (cWidth + cSpace) * iLoop - 2, yPd - cValue - 20, cFormat);

                //画柱图统计X轴值
                cRect = new RectangleF(xStart + (cWidth + cSpace) * iLoop, yPd + 1, cWidth + 10, 40);
                cGraphic.DrawString(ds.Tables[0].Rows[i][1].ToString(), fFont, cSolidBrush, cRect, cFormat);

                iLoop += 1;
            }

            return cBmp;
        }

然后，在Windows Mobile的窗体中加入PictureBox控件，调用绘图方法，将图形展现到PictureBox控件中。