protected void BtnLogin_Click(object sender, EventArgs e)        {            string ConStr = ConfigurationManager.ConnectionStrings["ConStr"].ToString();            string GetNameSql = "SELECT [Title] FROM [dbo].[Info] WHERE [Title]=‘" + this.TxtName.Text+"‘";            string GetPwdSql = "SELECT [Details] FROM [dbo].[Info] WHERE [Details]=‘" + this.Txtpwd.Text + "‘";            string Name = string.Empty;            string Pwd = string.Empty;            using(SqlConnection conn=new SqlConnection(ConStr))            {                conn.Open();                SqlCommand Pwdcomm = new SqlCommand(GetPwdSql, conn);                Pwd = Convert.ToString(Pwdcomm.ExecuteScalar());                SqlCommand Namecomm = new SqlCommand(GetNameSql,conn);                Name = Convert.ToString(Namecomm.ExecuteScalar());                               if (Name == this.TxtName.Text && Pwd == this.Txtpwd.Text)                {                    Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(‘登陆成功！‘);</script>");                }                else                 {                    Response.Write("<script>alert(‘登陆失败！‘);</script>");                    //Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(‘登陆失败！‘);</script>");                }                if ((Name == this.TxtName.Text && Pwd != this.Txtpwd.Text) || (Name != this.TxtName.Text && Pwd == this.Txtpwd.Text))                {                    Session["count"] = Convert.ToInt32(Session["count"]) + 1;                }                if (Convert.ToInt32(Session["count"]) > 3)                {                    string UpdateTime = "SELECT Datediff(minute, [LoginDate], GetDate()) FROM [Info] WHERE Title=‘" + this.TxtName.Text+"‘";                    SqlCommand comm = new SqlCommand(UpdateTime,conn);                    string countMiuntes=(30-Convert.ToInt32(comm.ExecuteScalar())).ToString();                    if (Convert.ToInt32(countMiuntes) > 0)                    {                        Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(‘登陆超过三次失败！距离解禁还有" + countMiuntes + "分钟‘);</script>");                    }                    if (Convert.ToInt32(countMiuntes) <= 0)                    {                        string GetNowTime = "UPDATE [Info] SET [LoginDate]=‘" + DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss") + "‘ WHERE Title=‘" + this.TxtName.Text + "‘";                        SqlCommand commtime = new SqlCommand(GetNowTime, conn);                        if (commtime.ExecuteNonQuery() > 0)                        {                            Session.RemoveAll();                        }                    }                }            }        }