C# 如何在ASP.NET中读取应用程序日志并根据源进行过滤?
在我的应用程序中,我想读取本地系统的应用程序事件日志。 目前我正在使用以下代码C# 如何在ASP.NET中读取应用程序日志并根据源进行过滤?,c#,asp.net,events,C#,Asp.net,Events,在我的应用程序中,我想读取本地系统的应用程序事件日志。 目前我正在使用以下代码 public partial class AppLog : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { System.Diagnostics.EventLog logInfo = new System.
public partial class AppLog : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
System.Diagnostics.EventLog logInfo = new System.Diagnostics.EventLog();
logInfo.Log = "Application";
logInfo.MachineName = "."; // Local machine
string strImage = ""; // Icon for the event
Response.Write("<p>There are " + logInfo.Entries.Count + " entries in the System event log.</p>");
foreach (EventLogEntry entry in logInfo.Entries.Cast<EventLogEntry>().Reverse<EventLogEntry>())
{
switch (entry.EntryType)
{
case EventLogEntryType.Warning:
strImage = "images/icon_warning.PNG";
break;
case EventLogEntryType.Error:
strImage = "images/icon_error.PNG";
break;
default:
strImage = "images/icon_info.PNG";
break;
}
Response.Write("<img src=\"" + strImage + "\"> | ");
Response.Write(entry.TimeGenerated.ToString() + " | ");
Response.Write(entry.Message.ToString() + "<br>\r\n");
}
}
}
}
并遍历结果列表。查看这些选项是否有帮助
仅供参考:是你的反向()导致了减速。
Linq有助于过滤,只要以后不反转它
我最终做这件事是为了我的目的:
for(int x = logInfo.Entries.Count-1; x >= 0; x--)
{
EventLogEntry entry = (EventLogEntry)logInfo.Entries[x]; ...
再解释一下,对于循环的每一次迭代,都调用reverse(),这是一个缓慢而密集的过程。如果在foreach循环之前反转,您可能能够加快速度。var eventLog=new eventLog(“应用程序”);
var eventLog = new EventLog("Application");
eventLog.Entries
.Cast<EventLogEntry>()
.Select(e => e.Source == "yourFilter");
eventLog.Entries
.Cast()
.选择(e=>e.Source==“yourFilter”);
必须为你的linq查询提供道具!非常适合我的需要!
var eventLog = new EventLog("Application");
eventLog.Entries
.Cast<EventLogEntry>()
.Select(e => e.Source == "yourFilter");