UpdatePanel not reloading on postback

Question

I have a table within an updatepanel and it displays the information as the page loads. When I press a button the updatepanel refreshes and the information goes away. In debug it shows it looping through but not displaying on website.

<div class="col-xs-12 col-md-6" style="margin-top: 10px;">
        <div id="notificationsTab" class="tab" style="background-color: #AD816B;">
            <a style="color: black; text-decoration: none;">&nbsp;Notification</a>
            <div id="button3" class="button4">
            </div>
        </div>
        <div class="toggler2">
            <div id="effect2" class="">
                <asp:UpdatePanel ID="notifications" runat="server" BackColor="#AD816B" BorderColor="#724229"
                    BorderStyle="Inset" class="notifications" UpdateMode="Conditional">
                    <ContentTemplate>
                    <div class="mCustomScrollbar content3 fluid light">
                        <div class="notificationsDay">
                            <table id="testingtesting">
                                <tr>
                                    <td style="width: 15%">
                                        Action
                                    </td>
                                    <td style="width: 55%">
                                        Description
                                    </td>
                                    <td style="width: 30%">
                                        Date Added
                                    </td>
                                </tr>
                                <% for (int i = 0; i <= ***.Count - 1; i++)
                                   {
                                       string action = Get2DHashtableElement(*** i, "***");
                                %>
                                <tr>
                                    <%if (action == "Checked In Appt")
                                      {%>
                                    <td>
                                        <center>
                                            <a class="fancybox fancybox.iframe" href=***?id=<%= Get2DHashtableElement(***, i, "***")%>'>
                                                <img src="images/httpzcoolcomcnpicpngpng_7420png.png" border="0" style="height: 25px;
                                                    width: 25px;" /></a>
                                        </center>
                                    </td>
                                    <%} %>
                                    <td>
                                        <%= Get2DHashtableElement(mhc_notification, i, "Description")%>
                                    </td>
                                    <td>
                                        <%= Get2DHashtableElement(mhc_notification, i, "AddedDate")%>
                                    </td>
                                </tr>
                                <%} %>
                            </table>
                        </div>
                    </div>
                    </ContentTemplate>
                    <Triggers>
                     <asp:AsyncPostBackTrigger ControlID="btnTesting" EventName="Click" />
                    </Triggers>
                </asp:UpdatePanel>
            </div>
        </div>
    </div>

The button is a simple button

<asp:Button ID="btnTesting" runat="server" onclick="btnTesting_Click" 
                        Text="Action" />

and here is the c#

 protected void btnTesting_Click(object sender, EventArgs e)
{
    using (SqlConnection connection = new SqlConnection(strConnString))
    {
        int sKey = Convert.ToInt32(ViewState["sKey"]);
        DateTime now = DateTime.Now;
        string today = now.ToString("MM/dd/yyyy");
        SqlCommand cmd = new SqlCommand("INSERT INTO *** (Staffkey, ClientKey, ActionKey, Description) VALUES (@Staffkey, @ClientKey, @ActionKey, @Description)");
        cmd.CommandType = CommandType.Text;
        cmd.Connection = connection;
        cmd.Parameters.AddWithValue("@Staffkey", sKey);
        cmd.Parameters.AddWithValue("@ClientKey", **);
        cmd.Parameters.AddWithValue("@ActionKey", "Checked In Appt");
        cmd.Parameters.AddWithValue("@Description", "test , greg2 is Checked in for their" + today + "Appointment");
        connection.Open();
        cmd.ExecuteNonQuery();
    }

All it does is add someone to the database and is supposed to update the table after add. I don't want to refresh the whole page just the panel.

I've looked around but mostly all I see is gridviews. I also tried jquery.load and tried to reload the div its self to see if that would work but to no evail. }