Refresh / Reload DataTables

#Method 1
# Refresh one table
if table.IsRefreshable and table.NeedsRefresh:
   table.Refresh()


# Refresh all tables
for t in Document.Data.Tables:
   if t.IsRefreshable and t.NeedsRefresh:
      t.Refresh()

#Method 2
import clr
from System.Collections.Generic import List, Dictionary
from Spotfire.Dxp.Data import DataTable
from Spotfire.Dxp.Framework.ApplicationModel import NotificationService

# Empty list to hold DataTables
Tbls = List[DataTable]()

Tbls.Add(dt1) #dt1 a DataTable string parameter 
Tbls.Add(dt2) #dt2 a DataTable string parameter 
Tbls.Add(dt3) #dt3 a DataTable string parameter 

# Notification service
notify = Application.GetService[NotificationService]();

# Execute something after tables are loaded
def afterLoad(exception, Document=Document, notify=notify):
if not exception:
Document.Properties["lastReload"]
print "OK"
else:
notify.AddErrorNotification("Error refreshing table(s)","Error details",str(exception))

# Refresh table(s)
Document.Data.Tables.RefreshAsync(Tbls, afterLoad)

Reference: https://community.tibco.com/questions/table-refresh-indication