protected void showUpZp()
        {
            try
            {
                string imgfilename = "";
                if (FileZp.PostedFile.FileName != "")
                {
                    string fileName = FileZp.PostedFile.FileName;       //取得文件名   
                    System.Drawing.Image image = System.Drawing.Image.FromFile(fileName);
                    string strWidth = image.Width.ToString();
                    string strHeight = image.Height.ToString();

                    string strDx = string.Format("{0:N2}", Math.Round((Convert.ToDouble(strHeight) / Convert.ToDouble(strWidth)),2));

                    if (Convert.ToDouble(strDx) <= Convert.ToDouble("1.30"))
                    {
                        if (Convert.ToDouble(strDx) >= Convert.ToDouble("1.20"))
                        {
                            int intFileLength = FileZp.PostedFile.ContentLength;

                            if (intFileLength > 102400)
                            {                               
                                Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer='defer'>alert('身份证图片大小不能大于100KB');</script>");
                                return;
                            }
                            else
                            {
                                string strFullZpName = FileZp.PostedFile.FileName.Substring(FileZp.PostedFile.FileName.IndexOf("."));                                
                                imgfilename = txtUserId.Text + "Z" + strFullZpName;
                                FileZp.PostedFile.SaveAs(Server.MapPath("../../UserZp") + "\\" + imgfilename);
                                strFileZpName = imgfilename;
                            }
                        }
                        else
                        {                            
                            Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer='defer'>alert('头像照片的比例调整为1.2-1.3之间，最佳效果为1.25（即高宽比例为5：4）。');</script>");
                        }
                    }
                    else
                    {                         
                         Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer='defer'>alert('头像照片的比例调整为1.2-1.3之间，最佳效果为1.25（即高宽比例为5：4）。');</script>");
                    } 
                }
                else
                {
                    strFileZpName = "UserZp.jpg";
                }
 
            }
            catch (System.Exception ex)
            {                
                Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer='defer'>alert('身份证图片上传失败:" + ex.Message + "');</script>");
            }
        }