public EventLogHelper(EventFilters eventFilters)
{
lstErrors = new List<string>();
Validate(eventFilters);
this.eventFilters = eventFilters;
}
public Result Post(EventFilters eventFilter)
{
EventLogHelper helper=new EventLogHelper(eventFilter);
helper.GenerateEventLog();
return helper.GetResult();
}
private void Validate(EventFilters eventFilters)
{
if (String.IsNullOrEmpty(eventFilters.IP))
{
eventFilters.MachineName = System.Environment.MachineName;
}
else
{
try
{
if (PingHost(eventFilters.IP))
{
try
{
IPHostEntry entry = Dns.GetHostEntry(eventFilters.IP);
eventFilters.MachineName = entry.HostName;
}
catch (Exception)
{
lstErrors.Add(string.Format("Unable to get Host Name for {0} ", eventFilters.IP));
}
}
else
{
lstErrors.Add(string.Format("Unable to ping host {0} ", eventFilters.IP));
}
}
catch (Exception e)
{
Debug.Print(e.Message);
lstErrors.Add("An error occured while validating");
}
}
if (eventFilters.fromDate != null && eventFilters.toDate != null)
{
if (eventFilters.fromDate.Value > eventFilters.toDate.Value)
{
lstErrors.Add("from Date cant be greater than To date");
}
}
}
private static string GetQueryString(EventFilters eventFilters)
{
string xPathQuery = string.Empty;
bool connector = false;
//if (eventFilters.BeforeTimeStamp > eventFilters.AfterTimeStamp)
//{
// return string.Empty;
//}
xPathQuery = "*[System[";
if (eventFilters.Level != LogLevel.Nothing)
{
xPathQuery = xPathQuery + "(Level = " + ((int)eventFilters.Level).ToString() + ')';
connector = true;
}
if (eventFilters.eventID > 0)
{
if (connector == true)
{
xPathQuery = xPathQuery + " and ";
}
xPathQuery = xPathQuery + "(EventID = " + (eventFilters.eventID).ToString() + ')';
connector = true;
}
if (eventFilters.fromDate != null)
{
if (connector == true)
{
xPathQuery = xPathQuery + " and ";
}
xPathQuery = xPathQuery + "(TimeCreated[(@SystemTime >= '" + eventFilters.fromDate.Value.ToUniversalTime().ToString("o") + "')])";
connector = true;
}
if (eventFilters.toDate != null)
{
if (eventFilters.fromDate != null && eventFilters.fromDate.Value != eventFilters.toDate.Value)
{
if (connector == true)
{
xPathQuery = xPathQuery + " and ";
}
xPathQuery = xPathQuery + "(TimeCreated[(@SystemTime <= '" + eventFilters.toDate.Value.ToUniversalTime().ToString("o") + "')])";
connector = true;
}
}
xPathQuery = xPathQuery + "]]";
return xPathQuery;
}
