Vb2008 - Reading/searching Event Log?
Jun 29, 2009
Im using VB2008 and im trying to write a little app to basically poll the local event log for an error from an certain application.I consider myself a noob in vb although i have written a few applications.I dont have any code to show you as i have no idea where to start!! So to sum up what i want my app to do is:
1. poll the local event log
2. if it finds an "error" within that hour from this certain app then email me (i have the email code)
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Jul 30, 2011
[code].....
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Mar 15, 2012
I need to be ble to know how to search a text file in VB for a particular line and then display it. the files I'm trying to use are set up as: ID, Name, Address, Birthday, Pay-Roll TypeSo I need to know how to search the file for the ID number and then display the rest of that line
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Mar 7, 2012
I need to be able to know how to search a text file in VB for a particular line and then display it. the files I'm trying to use are set up as: ID, Name, Address, Birthday, Pay-Roll TypeSo I need to know how to search the file for the ID number and then display the rest of that lin
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Sep 23, 2009
I am working a building a form that is generated using Project|Add Windows Form|Form.
In the Load procedure, I placed the following code:
dbObject.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:scdbv4datascdbdata.mdb"
rsObject.CursorType = ADODB.CursorTypeEnum.adOpenKeyset
[Code]......
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Sep 8, 2009
I've created an Event Log Source for my application name during the installation process (the end-users are not local admins) and the app writes any error messages to the Application event log.I now want to retrieve the error from the Application log and display them in a grid in my app.
The issue is that it takes more than 30 seconds to retrieve all of the entries,regardless of any filtering I perform in my WMI query. My query is:
"SELECT * FROM Win32_NTLogEvent Where Logfile = 'Application' And Sourcename = 'myApp' And TimeGenerated > '" + DateTime.Now.AddDays(-14).ToString("yyyyMMdd") + "'"
Initially I only filtered on the SourceName but it took 30+ seconds to retrieve about 100 records from 40,000 in the Application log. I added the TimeGenerated filter thinking it would reduce the query time but it was the same.
I tried using the ReturnImmediately enumerationoption property, which does return quickly, but when iterating through the collection it takes over 30 seconds to display the relevant entries.The benchmark I am working against is the speed at which the Windows Event Viewer opens the Application Log and applies a filter on the SourceName. This takes at most 5 seconds to redisplay the filtered list. However, I note that working on Vista, when I open Event Viewer, UAC prompts for admin elevation whereas my code will be reading from the Application log using standard user rights.
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Nov 19, 2009
I'm working on a program to read event log entries from several remote servers...its basically to automate some daily checks we doMy code works but is very slow as the event logs can have up to 60,000 entries in them.I only need to check the logs from the specified date but when i run this it appears to check from the oldest entry to the newest. does anyone know how to reverse the order it looks in? or to save the index it checked from yesterday to a file and only check newer entries next time it's run (obviously i know how to save a number to a file and read it back.. i just mean in terms of the eventlog API stuff!!!)
Dim elevent As New System.Diagnostics.EventLog("Application", currentserver)
Dim elEventEntry As System.Diagnostics.EventLogEntry
For Each elEventEntry In elevent.Entries
[code].....
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Jun 15, 2011
I am using VB 2008 Express. How can I read from the Windows System event log? I've seen many examples writing to an event log, but none about reading the log.
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Oct 19, 2011
I want to search the windows security event log to determine if a certain user has logged in.I am using the system.diagnostic.eventlog class but struggling to display user name/ID information of the logged in account. From looking at the security log I can see that event ID 4624 display logon info. Here is my code so far:
Dim eventLogApp As New System.Diagnostics.EventLog("Security")
Dim eventLogEntry As System.Diagnostics.EventLogEntry
Dim eventCntr As Integer = 1
For Each eventLogEntry In eventLogApp.Entries
[code]....
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Mar 16, 2009
I would like to search event logs on my network for a certain EventID. I havent worked with Event Logs before and was wondering how difficult this task would be.
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Jul 26, 2011
I have created a new VB2008 project and I want to display the newest 5 system errors from the eventlogs.So far I have this but all it retrieves at present is every entry where all I need is the latest 5. I wil eventually need to expand this to show EventID etc
Dim objWMI As Object
Dim objItem As Object
[code].....
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Dec 10, 2008
how i can read the audits from security in the event logs in vista.
I just want to get if its successful or unsuccessful and who the user was.
I know the logs are kept here : %SystemRoot%System32WinevtLogsSecurity.evtx
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Nov 2, 2011
I am able to query/read the "Application" event log using System.Management classes in VB.net 2005 (win xp)But I have problem reading the "Message" / "description" of my custom event log.I am getting a System.NullReferenceException{"Object reference not set to an instance of an object."} while reading the "Message" / "Description of the event log while it is reading the others properties.Also when I use System.Diagnostics.EventLog and read all the Events on by one I am able to read the message/description of my custom event log. Why is that the System.Management classes can't read the my custom event log messages while the System.Diagnostics.EventLog classes can read them.The reason I want to use System.Management classes is bcoz I can query my custom event log where as with System.Diagnostics.EventLog classes I have to read the whole event log.
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Mar 29, 2012
I'm trying to follow the technique discribed by jmcilhinney in this HTML [URL]..I have all the drawing code in the .Paint event. Reading the above mentioned thread I would need .Invalidate(all or parts of the picturebox) AND .Update() in order to repaint (all or parts of) my PictureBox, however in my case it works without .Update. Am I doing something wrong?
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Jan 25, 2011
I am able to query/read the event log using VB.NET 2005 (Win XP). But still I have a problem reading the "Message" / "description" of the event log.I am getting a System.NullReferenceException while reading the "Message" / "Description" of the event log.Also when I use System.Diagnostics.EventLog and read all the Event on by one I am able to read the message/description of the event. This is the code:
Public Sub ReadEvent()
Dim iCount As Int16
Dim PastFourHours As Date = Date.Now.AddHours(-4)[code]......
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Jun 17, 2012
All the code i found for multi-threading is complex and not clear.What i want to do is creating a thread for reading and analyzing a big text file on Form_Load event, so that the form UI building continue without waiting for reading and analyzing the file finish.
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Jul 31, 2010
I've read thru Iceplug's tutorial on control arrays and got it working. I tried to add a new event by basically copying his click event code and calling it a doubleclick event. I used the proper addhandler and assigned the correct name to my sub. I have the click event changing the background color to blue and the doubleclick event changing the background color to green. The background color does not change to green. Why?
Heres the tutorial with my new code encased in asterisks ...
Code:
Imports System
Imports System.Windows.Forms
Public Class form1
[CODE]...
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Mar 30, 2009
I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.
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Jul 20, 2010
I'm trying to validate a few things in a form I'm building. It has a datagrid with clients info (taken from an access database) and a few textboxes where the user can type some search criteria. The thing is that those same textboxes are used to add new clients to the database and to modify a client's information if one from the datagrid is selected, so I made it that the buttons to insert and modify clients are disabled on load and thenevery time the text on a textbox changes ("TextChanged" event) they become enabled. So far so good. But then I wanted to make it so when a client from the datagrid is selected both buttons become disabled again until the text on a textbox changes (to make sure they're adding a different client and not the same one that was
selected).
I tried using the CellClick event from the datagrid to disable the buttons, but since every time a client is selected from the datagrid the info is shown on the textboxes, this triggers the TextChanged event too, and the buttons become available.So, is there a way I can tell the TextChanged event not to be triggered when the CellClick event occurs?
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Jan 2, 2010
I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
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Apr 18, 2011
The event handlers in my parent class are never called though the events are raised in the child class.
The Code:
Public Class childForm
Public Event checkboxchangedEvent(ByVal checkbox1 As Boolean, ByVal checkbox2 As Boolean)
Private Sub checkboxchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged, CheckBox2.CheckedChanged
[code]....
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Feb 9, 2011
Im having a bit of trouble with my form,I have a QUOTATIONS form that displays data to the Employye about Over timne etc. I want to be able to Search through the Employye file using either the ID or there Name.
I have the code to search through the file using there ID, i have addapted the code for there name, but can't run both at the same time.As in - i can serach by one, but not by both. If you see what i mean?
I want to be able to search by Either ID or Name. I can run either one or tother, but not both at the same time,giving them a choice.Was thinking about using a seperate form, but that didn't work?
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Jan 11, 2010
I am trying to search through items in listview control in vb.net one by one. i.e When the user types in some keyworrk in the textbox and presses enter, the first found item in the listview should get highlighted, when he presses enter again, the second search item in the listview should get highlighted and so on.
I am not fully aware of how to keep track of already found items while searching. As of now , I am searching all the items in the listbx using the code :
[Code]...
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Mar 30, 2012
How to get the value on a specific row by searching?i.e., I have a gridview:
A B C
---------
1 2 3
[code].....
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Feb 17, 2009
Some tips and exsample for searching in listbox.
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May 1, 2009
is there anyway i can search for a particular row in all columns in a database and display them accordingly? like in a customer table, i have CustomerID, Name, Address is it possible to search for all the details of a customer?
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May 1, 2009
is there anyway i can search for a particular row in all columns in a database and display them accordingly?
like in a customer table, i have CustomerID, Name, Address is it possible to search for all the details of a customer?
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Oct 28, 2009
I am doing an assignment for class and it is searching an SQL Database file. On the GUI I have a text box and a button to search this database. It is presented on the form in DataGridView connecting to the file, and the file connection test succeeded, I am kinda so so on understanding what is going on with the connection between the file and VB 2008 but I am getting 4 errors: Warning1The designer cannot process the code at line 119: Me.PlayersBindingSource.DataSource = Me.BaseballDataSet
[code].....
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Aug 24, 2009
I am pulling the computer model from the bios, the passing the result into some SQL to find it in a table (as the bios name, and the names in the database are different).If it exist, it writes the value from the database to a combo box (cbModelBios)I am trying to debug the case where the computer model does not exist in the table.I figured I would just try to see if the SQL statement returned null, but I am still getting an error [code]
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Aug 23, 2010
I have an object that I'm instantiating in VB.NET. I'm trying to see if it's storing a particular value somewhere in it. If I look at the object in the watch window in the VS 2010 IDE, I see this huge tree structure with thousands of nodes, many layers deep.
I'd like to be able to search for a value "1234" in this huge tree structure. I tried using serialization to convert the object to xml, but it complains that it doesn't have a parameterless constructor, since this object is provided by a third party, I can't add a parameterless constructor.Is there any way that I can search this object? Is there anyway that I can convert the tree structure that I see in the vs 2010 watch window to an xml document, or a string?
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