System.Web.HttpException during binding gridview

[pankajprakash]

Hi I have an asp.net gridview control. I have used pagging but when I click on grid for pagging it shows the following error
Error: A Runtime Error has occurred.Do you wish to Debug?
Line: 4723
Error: Sys.WebForms.PageRequestManagerServerErrorExceptio n: The GridView 'dgridAlarms' fired event PageIndexChanging which wasn't handled.


Here is code

 protected void Page_Load(object sender, EventArgs e)
        {
            if (IsPostBack) return;
            FillAlarms("ALL");
        }
 
 public MySite.AlarmList FillAlarms(string type)
        {
            MySite.Alarms obAlarms = new MySite.Alarms();
 
            //MySite.DataCollection<MySite.Alarms> obCollection = new MySite.DataCollection<MySite.Alarms>();
 
            MySite.AlarmList obCollection = new MySite.AlarmList();
 
            try
            {
 
                if (type == "ALL")
                {
                    obCollection = obAlarms.GetAllAlarms(MySite.AlarmRetrieveType.All);
                }
                else if (type == "ACKNOWLEDGED")
                {
                    obCollection = obAlarms.GetAllAlarms(MySite.AlarmRetrieveType.Acknowledged);
                }
                else
                {
                    obCollection = obAlarms.GetAllAlarms(MySite.AlarmRetrieveType.NotAcknowledged);
                }
 
                if (obCollection.Count > 0)
                {
                    dgridAlarms.DataSource = obCollection;
                    dgridAlarms.DataBind();
                }
 
                return obCollection;
            }
            catch
            {
                throw;
            }
            finally
            {
 
            }
 
        }
    }
 

Here AlarmList is

  public class AlarmList : List<Alarms >
    {
 
    }
 

<asp:GridView ID="dgridAlarms" runat=server AllowPaging=true 
                                        onselectedindexchanging="dgridAlarms_SelectedIndexChanging" ></asp:GridView>
 

[pankajprakash]

sorry it was my mistake.. i didn't use

  protected void dgridAlarms_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            dgridAlarms.PageIndex = e.NewPageIndex ;
 
            FillAlarms("ALL");
        }