c# - How to enable SqlDependency OnChange event to handle multiple requests at a time -


when work sqldependency, work ondatachange event , event notifies regarding data change in table. suppose application monitoring test table using sqldependency, , suppose huge amounts of data getting inserted , updated in test table frequently. not know how sqldependency's ondatachange event can handle situation because ondatachange event fire data changes in db table.

here snippet of code onchange event:

void ondatachange(object sender, sqlnotificationeventargs e) {     ((sqldependency)sender).onchange -= ondatachange;      bbalogger.write("partindexer service registernotification called end", bbalogger.msgtype.info);      if (e.source == sqlnotificationsource.timeout)     {         mailsend(); // notification mail send         bbalogger.write("partindexer service sqlnotificationsource.timeout error", bbalogger.msgtype.error);          environment.exit(1);     }     else if (e.source != sqlnotificationsource.data)     {         mailsend(); // notification mail send         bbalogger.write("partindexer service sqlnotificationsource.data", bbalogger.msgtype.error);          environment.exit(1);     }     else if (e.type == sqlnotificationtype.change)     {         startindex();         bbalogger.write("partindexer service data changed", bbalogger.msgtype.info);     }     else     {         bbalogger.write(string.format("ignored change notification {0}/{1} ({2})", e.type, e.info, e.source), bbalogger.msgtype.warnings);     }      registernotification(); }

i'm looking in designing ondatachange event in such way if data changed very frequently in test table, ondatachange can handle situation. ondatachange event should not freeze , should log each data change in xml file.


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