How i can count number of click on a particuler link???

my aspx page...

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Search.aspx.cs" Inherits="Search" %>



		onclick="Button1_Click" /> onclick="Button2_Click" />

AllowSorting="true" DataSourceID="dsDetails" Width="100%" class="grid-bg" DataKeyNames="mobile" >

<%----%>

Text='<%# Eval("name") %>' />

');" btn_Click class="left" >Show Details

Coding page..

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.SqlClient;

using System.Text.RegularExpressions;

public partial class Search : System.Web.UI.Page

{

private string SearchString = "";

protected void Page_Load(object sender, EventArgs e)

{

}

public string HighlightText(string InputTxt)

{

string Search_Str = txtSearch.Text;

// Setup the regular expression and add the Or operator.

Regex RegExp = new Regex(Search_Str.Replace(" ", "|").Trim(), RegexOptions.IgnoreCase);

// Highlight keywords by calling the

//delegate each time a keyword is found.

return RegExp.Replace(InputTxt, new MatchEvaluator(ReplaceKeyWords));

}

public string ReplaceKeyWords(Match m)

{

return ("" + m.Value + "");

}

protected void Button1_Click(object sender, EventArgs e)

{

SearchString = txtSearch.Text;

}

protected void Button2_Click(object sender, EventArgs e)

{

txtSearch.Text = "";

SearchString = "";

gvDetails.DataBind();

}

i want to know how i can find out that how many time a person click on show detail link.. plz help me out.. its really urgent.. plz plz.