数据库对我的行和EditInfo HTML页面有问题

Question

大家好，我的数据库有问题，我为网站中的用户创建了数据库信息的EditInfo html页面... Now its looking like that

它显示已登录用户的信息，他可以将其更改为他想要的任何内容... 但是它制造问题... 它不允许我更新信息...

此处的代码：

protected void Page_Load(object sender, EventArgs e)
{
    string UserName;
    if (Session["User"] == null)
    {
        Response.Redirect("Home.aspx");
    }
    if ((Session["AdminMode"] == "1") || (Session["AdminMode"] == "2"))
        UserName = Session["AdminEditUser"].ToString();
    else
        UserName = Session["User"].ToString();
    if (!IsPostBack)
    {
        int i, j;
        string birthDate;
        string connectionStr = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\WebSites\MyWebsite\App_Data\DataBase.mdb;Persist Security Info=True";
        OleDbConnection connectObj = new OleDbConnection(connectionStr);
        string mySql = "SELECT * from Users WHERE UserName= '" + UserName + "'";
        OleDbDataAdapter dataAdapt = new OleDbDataAdapter(mySql, connectObj);
        DataSet ds = new DataSet();
        dataAdapt.Fill(ds, "Users");
        DataRow row = ds.Tables["Users"].Rows[0];
        AccountText.Text = UserName.ToString();
        pass.Text = row[2].ToString();
        passchecker.Text = row[2].ToString();
        firstname.Text = row[3].ToString();
        lastname.Text = row[4].ToString();
        MyEmail.Text = row[5].ToString();
        PlaceList.Text = row[6].ToString();
    }

}

代码的继续：

 protected void EditClick_Click(object sender, EventArgs e)
{
    string eMailAvailable = MyEmail.Text;
       string usercheck = users.IsEmailBelong(eMailAvailable);
        bool eMailCheck = users.IsEmailExist(eMailAvailable);
        if (eMailCheck == true)
        {
            if (usercheck == UserName)
            {
                IsEmail.Text = "";
                MyEmail.BackColor = System.Drawing.Color.White;
            }
            else
            {
                IsEmail.Text = "";
                MyEmail.BackColor = System.Drawing.Color.IndianRed;
            }
        }
        else
        {
            MyEmail.BackColor = System.Drawing.Color.White;
        }


        if (MyEmail.Text == "")
        {
            int i;
            string userName = UserName;
            string Password = pass.Text;
            string firstName = firstname.Text;
            string lastName = lastname.Text;
            string eMail = MyEmail.Text;
            string cityID = PlaceList.Text;
            bool result = users.EditUser(userName, Password, firstName, lastName, eMail, cityID);
            if (result == true)
            {
                Response.Redirect("Home.aspx");
            }
        }
    }   

公共字符串UserName {get;组; }}

请帮助我：（