上传图片至数据库

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;

public partial class addtask : System.Web.UI.Page
...{
    static int id;
    protected void Page_Load(object sender, EventArgs e)
    ...{
        if (Session["id"] == null)
        ...{
            Response.Redirect("Default.aspx");
        }
        else
        ...{
            if (Session["IsMain"].ToString() == "1")
            ...{

            }
            else
            ...{
                if (Session["IsMain"].ToString() == "2")
                ...{
                }
                else
                ...{
                    Response.Redirect("Default.aspx");
                }
            }
        }

        if (!this.IsPostBack)
        ...{
            id = Convert.ToInt32(Request.QueryString["id"]);
            DataSet ds = Custmer.SelCustmer(id);
            this.Label15.Text = ds.Tables[0].Rows[0][1].ToString();
            this.Label16.Text = ds.Tables[0].Rows[0][2].ToString();
            ds.Clear();
            this.Panel1.Visible = true;
            this.Panel2.Visible = false;
            this.Panel3.Visible = false;
            this.Badd.Attributes["onclick"] = "javascript:jump();";

        }
    }

    protected void Badd_Click(object sender, EventArgs e)
    ...{
        DataSet ds = Custmer.SelCustmer(id);
        int iOperatorid = Convert.ToInt32(ds.Tables[0].Rows[0][19]);
        byte strType;
        if (RadioButton1.Checked)
        ...{
            strType = 2;
        }
        else
        ...{
            strType = 1;
        }
        string strExplain = this.TextBox2.Text;

        /**//////////////////////////图片byte//////////////////////
        Stream file;
        string picType;
        int iLenght;
        byte[] fileByte;
        if (FUupdate.PostedFile.FileName != "")
        ...{
            picType = FUupdate.PostedFile.ContentType;
            string fillname = FUupdate.PostedFile.FileName;
            string filetype = fillname.Substring(fillname.LastIndexOf(".") + 1);
            if (filetype == "gif" || filetype == "jpg")
            ...{
                file = FUupdate.PostedFile.InputStream;
                iLenght = FUupdate.PostedFile.ContentLength;
                fileByte = new byte[iLenght];
                file.Read(fileByte, 0, iLenght);
                if (Service.AddService(id, iOperatorid, picType, fileByte, strType, strExplain))
                ...{
                    this.Panel1.Visible = false;
                    this.Panel3.Visible = true;
                }
                else
                ...{
                    this.Panel1.Visible = false;
                    this.Panel2.Visible = true;
                }
            }
            else
            ...{
                this.Label5.Text = "文件格式不对！";
            }
        }
        else
        ...{
            picType = null;
            fileByte = null;
            if (Service.AddService(id, iOperatorid, strType, strExplain))
            ...{
                this.Panel1.Visible = false;
                this.Panel3.Visible = true;
            }
            else
            ...{
                this.Panel1.Visible = false;
                this.Panel2.Visible = true;
            }
        }
    }
}