这是我的button事件的代码   ，运行之后，在*** 这行报错(截图如下)，提示“GDI+ 一般项错误”，drawPic（）方法没错，但是就是找不到在指定路径下的jpg文件
，个人感觉还是路径的问题，哪位高手给解决一下？？？
private void button1_Click(object sender, EventArgs e)
        {
            this.Enabled = false;
            this.Enabled = true;
            Graphics objgraphics = this.CreateGraphics();
            string P_str_imagePath = Application.StartupPath.Substring(0,Application.StartupPath.Substring(0,Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            P_str_imagePath += @"\Image\image\" + DateTime.Now.ToString("yyyyMMddhhmss") + ".jpg";
            try
            {

                dbo.drawPic(objgraphics, "select name,num from tb_countryFourBT ", "tb_countryFourBT", "num", "name", "黔江区贫困指标贡献度统计");
               
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            finally
            {
             ***   System.Drawing.Image myImage = Image.FromFile(P_str_imagePath);
                picbox.Image = myImage;

            }
        }

路径不对,把路径写对就行了啊
你的Image文件夹应该跟项目中bin文件夹在同一目录下
你的文件名好像有问题
年月日时分秒.jpg ,而且是当前时间,都精确到秒了,分还少写了一位,除非你的jpg文件是当时用这个文件名生成,然后再用这个文件名取这个文件,否则不可能取得到这个文件名

怎样改合适 ？？现在根本就找不到Image\image 路径   文件夹根本就没生成

那你jpg文件是用代码生成的吗,那段代码是怎么写的

你看看

看哪里?

public void drawPic(Graphics objgraphics, string M_str_sqlstr, string M_str_table, string M_str_Num, string M_str_tbGName, string M_str_title)
        {
            DataSet myds = this.getds(M_str_sqlstr, M_str_table);
            float M_flt_total = 0.0f, M_flt_tmp;
            int M_int_iloop;
            for (M_int_iloop = 0; M_int_iloop < myds.Tables[0].Rows.Count; M_int_iloop++)
            {
                M_flt_tmp = Convert.ToSingle(myds.Tables[0].Rows[M_int_iloop][M_str_Num]);
                M_flt_total += M_flt_tmp;
            }
            Font fontlegend = new Font("verdana", 9), fonttitle = new Font("verdana", 10, FontStyle.Bold);//设置字体
            int M_int_width = 275;//白色背景宽
            const int Mc_int_bufferspace = 15;
            int M_int_legendheight = fontlegend.Height * (myds.Tables[0].Rows.Count + 1) + Mc_int_bufferspace;
            int M_int_titleheight = fonttitle.Height + Mc_int_bufferspace;
            int M_int_height = M_int_width + M_int_legendheight + M_int_titleheight + Mc_int_bufferspace;//白色背景高
            int M_int_pieheight = M_int_width;
            Rectangle pierect = new Rectangle(0, M_int_titleheight, M_int_width, M_int_pieheight);
            //加上各种随机色
            Bitmap objbitmap = new Bitmap(M_int_width, M_int_height);//创建一个bitmap实例
            objgraphics = Graphics.FromImage(objbitmap);
            ArrayList colors = new ArrayList();
            Random rnd = new Random();
            for (M_int_iloop = 0; M_int_iloop < myds.Tables[0].Rows.Count; M_int_iloop++)
                colors.Add(new SolidBrush(Color.FromArgb(rnd.Next(255), rnd.Next(255), rnd.Next(255))));
            objgraphics.FillRectangle(new SolidBrush(Color.White), 0, 0, M_int_width, M_int_height);//画一个白色背景
            objgraphics.FillRectangle(new SolidBrush(Color.LightYellow), pierect);//画一个亮黄色背景
            //以下为画饼图(有几行row画几个)
            float M_flt_currentdegree = 0.0f;
            for (M_int_iloop = 0; M_int_iloop < myds.Tables[0].Rows.Count; M_int_iloop++)
            {
                objgraphics.FillPie((SolidBrush)colors[M_int_iloop], pierect, M_flt_currentdegree,
                  Convert.ToSingle(myds.Tables[0].Rows[M_int_iloop][M_str_Num]) / M_flt_total * 360);
                M_flt_currentdegree += Convert.ToSingle(myds.Tables[0].Rows[M_int_iloop][M_str_Num]) / M_flt_total * 360;
            }
            //以下为生成主标题
            SolidBrush blackbrush = new SolidBrush(Color.Black);
            StringFormat stringFormat = new StringFormat();
            stringFormat.Alignment = StringAlignment.Center;
            stringFormat.LineAlignment = StringAlignment.Center;
            objgraphics.DrawString(M_str_title, fonttitle, blackbrush, new Rectangle(0, 0, M_int_width, M_int_titleheight), stringFormat);
            objgraphics.DrawRectangle(new Pen(Color.Black, 2), 0, M_int_height - M_int_legendheight, M_int_width, M_int_legendheight);
            for (M_int_iloop = 0; M_int_iloop < myds.Tables[0].Rows.Count; M_int_iloop++)
            {
                objgraphics.FillRectangle((SolidBrush)colors[M_int_iloop], 5, M_int_height - M_int_legendheight + fontlegend.Height * M_int_iloop + 5, 10, 10);
                objgraphics.DrawString(((String)myds.Tables[0].Rows[M_int_iloop][M_str_tbGName]) + " —— "
                    + Convert.ToString(Convert.ToSingle(myds.Tables[0].Rows[M_int_iloop][M_str_Num]) * 100 / M_flt_total) + "%", fontlegend, blackbrush,
                20, M_int_height - M_int_legendheight + fontlegend.Height * M_int_iloop + 1);
            }
            //objgraphics.DrawString("总数是：" + Convert.ToString(M_flt_total), fontlegend, blackbrush, 5, M_int_height - fontlegend.Height);
            string P_str_imagePath = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0,
                Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            P_str_imagePath += @"\Image\image\" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".jpg";
            objbitmap.Save(P_str_imagePath, ImageFormat.Jpeg);
            objgraphics.Dispose();
            objbitmap.Dispose();
        }

问题1
drawPic()方法中
objbitmap.Save(P_str_imagePath, ImageFormat.Jpeg);
P_str_imagePath的路径中的文件夹@"\Image\image\"必须存在,Save方法不能自动创建文件夹

问题2
drawPic()方法中的路径P_str_imagePath
跟你button1_Click事件中的路径P_str_imagePath,由于用了DateTime.Now.ToString("yyyyMMddhhmmss"),所以在不同的时刻,得到的文件名是不同的,在button1_Click事件中System.Drawing.Image myImage = Image.FromFile(P_str_imagePath);是取不到原来创建的文件的.必须使用同一个变量才可以,要么设置全局变量,即变量定义在类中,drawPic()和button1_Click事件都使用全局路径变量,要么在button1_Click事件中定义了P_str_imagePath变量后,以参数形式传给drawPic()方法用做保存

谢谢版主   解决了