Open popup by clicking on link button on gridview

Question

hi friends
 

i have a one problem that is first i fill up the form of student details after
those details will be placed in one gridview with linkbutton as studentid


what is my doubt is if i click that linkbutton on gridview those that button id information is open on popup for update purpose....


why problem is how can i open that popup by clicking on link button

please give me the code for this one please............


one hint:
---------
all the code will be placed inside the div
that code will be like this

<div id="divSimplePopup" class="popup" style="display:none; width: 1024px;">
  <asp:UpdatePanel ID="Updatepopup" runat="server">
  <ContentTemplate>
 
  <div class="big-strip-top"><span>Add Renewal</span></div>
  <div class="big-strip-mid">
  <table width="95%" border="0" align="center" cellpadding="4" cellspacing="6">
  <tr>
  <td align="right">Renewal Option ID :</td>
  <td align="left"><span class="t-content">
  <asp:RadioButtonList ID="RbtnRenewalOptionId" runat="server" >
  </asp:RadioButtonList> </span></td>
  </tr>
  <tr>
  <td align="right">Valid from :</td>
  <td align="left" ><span class="t-content">
  <asp:TextBox ID="txtValidFrom" runat="server"></asp:TextBox>
 

  </span></td>
  </tr>
  <tr>
  <td align="right" >Valid to :</td>
  <td align="left" ><span class="t-content">
  <asp:TextBox ID="txtValidTo" runat="server"></asp:TextBox>
  </span></td>
  </tr>

  <tr>
  <td width="36%" align="right">Paid Amount :</td>
  <td align="left"><span class="t-content">
  <asp:TextBox ID="txtPaidAmount" runat="server"></asp:TextBox>
  </span></td>
  </tr>
  <tr>
  <td align="right" valign="top">Paid Date :</td>

  <td align="left"><span class="t-content">
  <asp:TextBox ID="txtPaidDate" runat="server"></asp:TextBox>
  </span></td>
  </tr>
  <tr>
  <td align="right"></td>
  <td align="left"><span class="t-content">
  <asp:ImageButton ID="btnSave" runat ="server" ImageUrl="~/Images/btn_save.JPG"
  onclick="btnSave_Click" /><asp:ImageButton ID="btnCancel" runat="server" ImageUrl="~/Images/btn_cancel.jpg"  OnClientClick="$('#divSimplePopup').hideModal(); return false;" /></span></td>
  </tr>
  </table> 
  </div></ContentTemplate></asp:UpdatePanel></div>










 public void lnkRenewalID_Click(object sender, System.EventArgs e)
        {
            //if (e.CommandName == "Text")
            //{
            //    int id = int.Parse(e.CommandArgument.ToString());
                //string tmp = "";
                //tmp = "<script language='javascript'>";
                //tmp += "window.open(AddRenewal.aspx?RenewalID=" + id + "','width=400,height=320')";
                //tmp += "</script>";
                //Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "MyScript", tmp);
           
                LinkButton lbRenewalID = (LinkButton)sender;
                Session["Renewalid"] = int.Parse(lbRenewalID.CommandArgument);
                //ScriptManager.RegisterStartupScript(this.GetType(), "popupView", "switchPopupView('divSimplePopup');", true);
                 //divSimplePopup.Show();
                //int i = int.Parse(Session["Renewalid"].ToString());
                DataSet ds = new AddRenewalBF().SelectRenewalDtlForUpdate(int.Parse(Session["Renewalid"].ToString()));
                RbtnRenewalOptionId.SelectedValue = ds.Tables[0].Rows[0]["RenewalOptionId"].ToString();
                txtValidFrom.Text = ds.Tables[0].Rows[0]["ValidFrom"].ToString();
                txtValidTo.Text = ds.Tables[0].Rows[0]["ValidTo"].ToString();
                txtPaidAmount.Text = ds.Tables[0].Rows[0]["PaidAmount"].ToString();
                txtPaidDate.Text = ds.Tables[0].Rows[0]["PaidDate"].ToString();
          
       
        }