总是说我数目对不上，请问哪里出错了吗

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;using System.Data.OleDb;
public partial class admin_addpic : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {        Server.Execute("ceck.aspx");
    }
    protected void Button1_Click(object sender, EventArgs e)
    {        bool fileIsValid = false;
        //如果确认了上传文件，则判断文件类型是否符合要求
        if (this.FileUpload1.HasFile)
        {
            //获取上传文件的后缀
            String fileExtension = System.IO.Path.GetExtension(this.FileUpload1.FileName).ToLower();
            String[] restrictExtension = { ".gif", ".jpg", ".bmp", ".png", ".rar", ".doc", ".ppt" };
            //判断文件类型是否符合要求
            for (int i = 0; i < restrictExtension.Length; i++)
            {
                if (fileExtension == restrictExtension[i])
                {
                    fileIsValid = true;                }            }
            //如果文件类型符合要求,调用SaveAs方法实现上传,并显示相关信息
            if (fileIsValid == true)
            {
                try
                {                    this.FileUpload1.SaveAs(Server.MapPath("~/images/") + FileUpload1.FileName);
                    this.Label1.Text = "文件上传成功";
                    this.Label1.Text += "<li>" + "文件上传路径：" + "images/" + FileUpload1.FileName;                }
                catch
                {
                    this.Label1.Text = "文件上传不成功！";                }
                finally
                {                }
            }
            else
            {
                this.Label1.Text = "只能够上传后缀为.gif,.jpg,.bmp,.png的文件夹";            }        }    }
    protected void Button2_Click(object sender, EventArgs e)
    {        string name = Request.Params["name"];
        string path = Request.Params["path"];        string jianjie = Request.Params["jianjie"];
        OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OleDB.4.0;Data Source= " + Server.MapPath("../sjk.mdb"));
        conn.Open();        string str = "insert into zaocang(name,path,jianjie) values ('" + name + "','" + path + "''"+jianjie+"')";
        OleDbCommand cmd = new OleDbCommand(str, conn);        cmd.ExecuteNonQuery();
         conn.Close();
               Response.Write("<font color=red>添加成功！</font>");    }
}