Count visitor of one page in asp.net - asp.net

Question

I have a page that contains a record of a database. I want to count number of visits of that page . I use codes below to counts number of visits of page by increment view field of record. but this increment view randomly. for example when I refresh page the view increment 20 !.
my codes for this page is:
protected void Page_Load(object sender, EventArgs e)
{
da db = new da();
string str = "select views from newstxt where id=" + Request.Params["id"].ToString();
DataTable dt = new DataTable();
dt = db.select(str);
int view = Int32.Parse(dt.Rows[0][0].ToString());
//increment
view++;
//
str = "update newstxt set views=N'{0}' where id=" + Request.Params["id"].ToString();
str = string.Format(str, view);
db.docom(str);
}

Answer 1

There are couple of ways for this approach
simple approach would be using a view state
declare a Property like
public int ViewCount
{
get { return (int)ViewState["viewcount"]; }
set { ViewState["viewcount"] = value; }
}
use like ViewCount++; on page load and to get value int value = ViewCount
i hope this helps !!!

Answer 2

Protected Sub Page_Load(sender As Object, e As EventArgs)
Me.countMe()
Dim tmpDs As New DataSet()
tmpDs.ReadXml(Server.MapPath("~/counter.xml"))
lblCounter.Text = tmpDs.Tables(0).Rows(0)("hits").ToString()
End Sub
Private Sub countMe()
Dim tmpDs As New DataSet()
tmpDs.ReadXml(Server.MapPath("~/counter.xml"))
Dim hits As Integer = Int32.Parse(tmpDs.Tables(0).Rows(0)("hits").ToString())
hits += 1
tmpDs.Tables(0).Rows(0)("hits") = hits.ToString()
tmpDs.WriteXml(Server.MapPath("~/counter.xml"))
End Sub
XML
<?xml version="1.0" encoding="utf-8" ?>
<counter>
<count>
<hits>0</hits>
</count>

Answer 3

Nothing seems to be wrong with your code but it seems like there is something wrong your Request.Params. Are you using query string, if it is then i would suggest you to use Request.QueryString instead. Also, what you want only if to update the count then you can avoid select query and reduce your code to:
da db = new da();
String str = "UPDATE newstxt SET views = views + 1 WHERE id=" + Request.QueryString["id"].Trim();
db.docom(str);