linkbutton inside update panel not working

Question

The page has table inside updatePanel and linkbutton inside tablecell:

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
  <ContentTemplate>
    <asp:Table ID="Table1" runat="server" BackColor="White" BorderColor="Black" 
        BorderWidth="1px" ForeColor="Black" GridLines="Both" BorderStyle="Solid">
    </asp:Table>
  </ContentTemplate>        
</asp:UpdatePanel>  

Inside .cs file I add rows to the table:

TableRow tr = new TableRow();
TableCell tc = new TableCell();
LinkButton lb = new LinkButton();
lb.Text = "Click me";
lb.Click += new EventHandler(this.LinkButton_Click);
tc.Controls.Add(lb);
tr.Cells.Add(tc);
Table1.Rows.Add(tr);

And the method:

protected void LinkButton_Click(Object sender, EventArgs e)
{
  Response.Write("<script type='text/javascript'>");
  Response.Write("alert('Ok!');");
  Response.Write("</script>");  
}

So, when I click linkbutton the alert doesn't work. What is a problem?

Note that, if I delete updatepanel the linkbutton works when clicking at it.

Answer 1

It is not the correct way

Use this

ScriptManager.RegisterStartupScript(pnlUpdateCom, this.GetType(), "UpdateCom", "alert('OK!.');return false;", true);

Answer 2

You need to add postbacktrigger as following:

<asp:PostBackTrigger ControlID="SearchBrn"/>