How To Ping Machine Given Hostname Or IP Address
Apr 11, 2005
I have a module that will ping a machine given a hostname or an ip address. Is there an eaiser way to ping a machine using vb .net? I know you can use wsh to open a shell and execute the ping command from a command prompt window then use the ReadAll to get the information ping sends back and from there you can determine if the ping was sucessful or not. How would I do this in VB .Net or is there a better way to ping machines in .net?
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Jan 27, 2009
I have this code below that pings a hostname and responds with the status of the machine:
vb
Public Function PingHostname(ByVal strServerName As String) As Boolean
Dim blnPingResult As Boolean
Dim objPing As New Ping
Dim objIPStatus As IPStatus
[Code] ......
My question is... whenever the machine is not available it hangs as it times out and eventually fails and catches an exception. Is there a better way to do this so my application doesn't hang? What I have is a treeview with a list of computers and when I hit F5 it executes this code and pings the server.
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Jun 28, 2009
' Use Your work Group WinNT://&&&&(Work Group Name) Dim DomainEntry As New DirectoryEntry("WinNT://Wokgroup") DomainEntry.Children.SchemaFilte
[code].....
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Jul 8, 2009
i have tried altering some code i have to ping an ip address and store the result in an access db.i had it working when i had the ip hardcoded in as a string but I am now gettin an error.instead of having the ip address hardcoded in to the code i want it to be read in from the access db but im now getting this error:System.nullreferenceExceptionbject reference not set to an instance of an object at...button1.click event args ei have underlined the piece of code i tried to change
Imports System.Data
Public Class Form1
Dim Ping As Net.NetworkInformation.Ping
[CODE]...
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Apr 13, 2011
I am looking for a VB script that will test connectivity on an appliance IP and Gateway IP.I have an excel spreadsheet that consists of three columns (Location, Appliance IP, Gateway IP). What I am looking for is the ability to double-click on the Location cell and have the Appliance IP and Gateway IP pinged with the backgrounds of these cells changing from no fill to red/green depending upon the ping result
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Apr 12, 2010
Is there a way to ping an IP address from VB.NET and store the response times?
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Jan 7, 2010
How to get MAC address of client machine in c# and vb.net
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Apr 24, 2008
Background Hi here is my problem. Im a system admin and we have just completed a scheme of giving new pc's to disadvantaged children throughout our town. Now we have over 200 machines gone out but they have not been configured with a static IP address so they can access the Internet. what i want to do is create a program in VB.net to send a bispoke version out to each house to change the machines IP address, Subnet, Default gateway and Proxy server + port [URL]but i wont have 200 of these keys so thats not really and option unless they are generic as all of the machines have the same network card.
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Jun 16, 2009
I have a text file on a website that I have the direct URL address to. For example, http://www.example.com/thisFile.txt .
I would like to copy it to a predefined path on the local machine. For example, C:Documents and SettingsAll Users .
What can I use to copy the file from the URL to the predefined path on the local machine. A simple CopyFile doesn't seem to handle URL addresses.
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Feb 26, 2009
I'm trying to write a small app that finds the local machine's IP address (and SNM, DefGW, 1st DNS server, etc) then displays this nicely.
I don't want to go down the route of doing a Shell "ipconfig /all > somefile" then reading it in as I *know* this can be done another way.
I'm using VB 2008 Express Edition.
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Nov 16, 2010
What i want is :
There is one windows app ( made in .NET 3.5, VS2008, C# ) for Windows XP SP2 & SP3
generally users can change there IP or modify their IP Address.
Now,when my apps starts i dont want users to change there IP Address untill my app stops.
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Dec 20, 2011
The code line on where this is happening is on the response.redirect below:
Catch exR As System.NullReferenceException
Dim dt As CustomDataObject = New CustomDataObject("SP_Retrieve_LoginPort")
Dim port As Integer = dt.getdatatable.Rows(0).Item("Port")
Response.Redirect("http://" & Request.Url.Host & ":" & port)
I get the following in my Request URL:
http://©:53/Default.aspx
Where does the copyright symbol come from?
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Dec 21, 2011
Is it possible using wmic, to get the hostname as output when querying a text file? [code]
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Nov 11, 2010
I get ReffererUrl from current User, if refferer is exists i need to extract hostname without .com/.co.uk .... etc. value from it. So if ReffererUrl is http:[url].... i want to get just "something".
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May 7, 2010
I have a script that calls system name, but right now my users have to manually input the machine name after looking it up with the .vbs into a textbox. I would like to cut out the middle man and just include it automatically in the subject line of my form.
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Jan 11, 2009
I am just trying to get the information i collect from the pc's hostname and pass it into a db. All the db passwords, location etc are correct but i am getting nothing.
Imports System
Imports Microsoft.Win32
Imports System.Data
Imports System.Data.SqlClient
Public Class Form1
Private Sub DB()
[Code] ......
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Dec 9, 2010
I develop an application using vb.net.application will run on client server architecture.when we try to execute the program in client side then it will give me an error which is related to sqlclientexception.how can i handle this situation.i used vb.net 3.5 as front end and sql server 2000 as back end.i have done total coding with system.data.sqlclient namespace.
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Dec 21, 2010
I've inherited a lot of custom made software for an office, and, while managing it, I've found it performs differently from machine to machine.I mean, some controls get painted in weird ways in some machines but well in another, or just work differently, like in some machines clicking something selects it, and in the next machine clicking the same thing makes it editable.I suspect, o course, of the myriad of DLL the software loads
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Jul 6, 2011
Are there any IP Address filters or masks available in Windows Forms as per following screenshot? A backslash shouldn't be allowed or it should be filtered somehow.
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Aug 11, 2009
SocketException was Unhandled: Only one usage of each socket address (protocol/network address/port) is normally permitted I get this error every time i click collect a second time.
[Code]...
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Mar 8, 2009
Can anyone point me to some code which can help obtain the network address from the host IP and subnet mask?
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Jan 21, 2008
I want to block a perticular machine from accessing my machine..Both the machines are in LAN..I dont want a perticular machine to access my computer How can i achieve this...I want to do this using VB.NetAny idea....
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Aug 6, 2011
I made web browser which consist address bar that I use it to type addressess in it i.ewhen I type [URL] it opens [URL] but when I go to anther page in google it doesnot show it's link in address bar lix InterntExplorer or other international browsers so how to show any link or any sub page's link in my browser address bar ?
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Nov 27, 2009
I'm trying to use the DHCP API (using the references on pinvoke.net) to retrieve a computer's MAC address when given the IP address but I can't get the code to work. I've run all the C# code on pinvoke.net through the C#-to-VB converter but I'm stuck now.
Here's what I have so far. The value of res is always 5 (should be 0). Thing is, I can't find any documentation on what the return codes mean
vb
Private Sub GetMACDim client As String = "1.1.1.1" Dim server As String = "0.0.0.0" Dim si As New NativeMethods.DHCP_SEARCH_INFO si.SearchType = NativeMethods.DHCP_SEARCH_INFO_TYPE.DhcpClientIpAddress si.ClientIpAddress = Convert.ToUInt32(StringIPAddressToUint32(client)) Dim res As UInteger Dim oInfo As IntPtr
[code]....
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Oct 15, 2009
In my Windows Forms application (on startup) I use the ping command to check if both the Internet connection and my SQL Server are alive.Is there any "better" way-command I should use for accomplishing the above task in the .NET framework 2.0?
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Jun 10, 2011
I'm currently doing my project to check my server status with ping option. but i got problem to check either the network is plugged or unplugged...I need this checking automaticly using timer...here what i have done....to ping the server is success but when pulgged back the network...error come around..
Private Sub Timer4_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer4.Tick
Timer4.Interval = 30000
If My.Computer.Network.IsAvailable Then
If My.Computer.Network.Ping("www.mine.my", 500) Then
[code].....
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Dec 29, 2009
what are other ways to do ping in vb.net or c# other than the way found here:
Dim pinger As New System.Net.NetworkInformation.Ping
MessageBox.Show(pinger.Send("192.168.0.119").Status.ToString)
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Jul 20, 2009
I have this code to ping a list of over 400 switches , the program works fine but for some reason the first time i ping all the switches alot of the attempts time-out(even tho they shouldnt) which makes the program alot slower , if i click ping again less of the attempts time-out(and as a result the program runs faster) and if i click it a third time i usually get a completely accurate result with all the switches pinging back "success" (except for a few which i know for a fact are down anyway) any ideas why this is ?
CODE:
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Mar 16, 2010
I am trying to create a tool that will test to see if a device is reachable b ICMP and report back with the latency, i.e. send a ping. If possible, I would also like to get the hop count value.[code]I keep getting an error message saying " 'Send' is not a member of 'NetworkTool.Ping' ", but everyone seems to use it. So how do I do get .Send to work?
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Mar 30, 2009
I cannot understand why I get no 'ping' sound when the following messagebox comes up. I'm using VISTA and VB.NET 2008.[code]
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