Populate Obout Grid Data in Text Box Via JavaScript

<script type="text/javascript"   runat="server">
    
       public void OnRecordSelected(object sender, Obout.Grid.GridRecordEventArgs e)
       {
           Hashtable data = null;
           Obout.Grid.GridRow row = Grid1.Rows[0];
           data = row.ToHashtable() as Hashtable;
           tbIssueNo.Text = data["varchIssueNumber"].ToString();

       }
        </script>

<Templates>
                  <cc2:GridTemplate runat="server" ID="editBtnTemplate">
                  <Template>

                  <input id="Button1" type="button" value="Edit" runat="server" onclick="OnRecordSelected" />
                  </Template>
                  </cc2:GridTemplate>
                  </Templates>