📄 eventlog.aspx

📁 东软内部材料（四）asp等相关的教学案例　

💻 ASPX

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<%@ Page language="c#" debug="true" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Diagnostics" %>
<%@ Import Namespace="System.Security.Permissions" %>


<html>
<head>
<!--------------------------------------------------------------------------->

<script language="c#" runat=server>

  void Page_Load(Object Sender, EventArgs E) 
  {
    SqlConnection myConnection;
    String ConnStr;
    int i;
    int x = 0;
    int y = 0;

    // set the connection details
    ConnStr = "Server=localhost; database=_pubs; UID=sa";

    try
    {
      myConnection = new SqlConnection(ConnStr);
      myConnection.Open();

      i = x / y;
		}
    catch (SqlException exSQL)
    {
      WriteToEventLog("Wrox", exSQL.ToString());
		}
    catch (Exception ex)
    {
      WriteToEventLog("Wrox", ex.ToString());
		}
    finally
    {
      FinishedMessage.Text = "Finished";
    }
  }
  

  void WriteToEventLog(String LogName, String MessageString)
  {
      //RegistryPermission rp = new RegistryPermission(RegistryPermissionAccess.AllAccess
      //	, "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\EventLog\\" + LogName);
      //RegistryPermission rp = new RegistryPermission(PermissionState.Unrestricted);
      //rp.Demand();

    // Create Event Log if It Doesn't Exist
    if (!EventLog.SourceExists(LogName))
    {
      EventLog.CreateEventSource(LogName, LogName);
    }

    // write entry
    EventLog Log = new EventLog();
    Log.Source = LogName;
    Log.WriteEntry(MessageString, EventLogEntryType.Error);
	}

</script>

<asp:label id="FinishedMessage" runat="server" />

</html>

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