protected void lnkAddDuration_Click(object sender, EventArgs e)
 {
     TimeSpan duration = TimeSpan.Parse(ddlSuggestions.SelectedValue);
     int leaveId = Convert.ToInt32(ddlLeaves.SelectedValue);
     MasterEntries objMasterEntry = new MasterEntries();
     objMasterEntry.AddDuration(duration, leaveId);
     GridDuration();
 }