I have the following code:
Dim ipAdd As IPAddress = Dns.GetHostEntry(strHostname).AddressList(0)
Dim strIP As String = ipAdd.ToString()
When I convert to String instead of an IPv4 address like 192.168.1.0 or similar I get the IPv6 version: fd80::5dbe:5d89:e51b:d313 address. Is there a way I can return the IPv4 address from IPAddress type?
How can I return the IPv4 address in VB.Net? E.g. 192.168.1.5
View 3 RepliesI tried ipEntery.AddressList.GetValue(0).ToString in a messagebox
but it only displays link-local ipv6 address o f"fe80::28d3:3882:3490:1a95%11" is their another way of obtaining local ipv4 address directly?
I have the following code in VB 2008:
Public
Class Form1
Private[code]....
I am running this on my version of window 7 - my problem is that it is returning a IPv6 address and not a IPv4. I have searched and played around all evening to try and sort this out... to no avail.
heres the script basically it sets (supposed to) Local area connection ipv4 static ip address to 10.XX.XX.2 but it dosent work it works fine if you run cmd as addy and put the script in netsh interface ip set address "Local Area Connection" static 10.XX.XX.2
Dim txtlen As Integer = Len(TextBox2.Text)
Dim IPAddy As String = ""
Dim asciiSplit(4) As Char
[CODE]...
listener = New Net.Sockets.TcpListener("127.0.0.1", 32111)
Value of type 'String' cannot be converted to 'System.Net.IPAddress'.
I have a Callback from a socket that get called each time I get a Packet, It then add an IP address to a Listview. Now I got all the IP with the Active Connections, I cannot, From the call back check if the IP is already added to the list so I made a class and a Delegate and used UI.Invoke to call the method and check if Duplacates then add the coordinating information, I went a Step further and did a lookup on host name to pull the computer hostname from the ipaddress, But I do it each time due to getting Multiple of the same IP and I do not want to do it on the thread that the UI.INvokes from due to resolving a Host name will lock the GUI for a full Second, so you can imagine doing this on a network with constant information.
Now what I want is from the Async thread that is receiving all the data to Invoke the UI thread, check if ListviewItem already exist then exit the Dispatched Sub, then from the Async thread again check the Classes return value then if it dose not already exist start the lookup, I have this so far but Im not 100% sure if it is working the right way, Is Invoke Async or Sync even though Im telling another thread to start, if now how can I made My Async thread wait on UI.Invoke to complete 100% so I can check the classes return value?
Async Thread
Code:
MySubPtr = AddressOf MyDispatch.TreeViewItemExist 'Trigger The Event Through Form1 Backed Up Handle!
Try
'Dim DoesTheItemExist As IAsyncResult
'IAsyncResult = MainHandle.BeginInvoke(MySubPtr)
[Code] .....
I have a copy function that I'd like to override in subclasses to return the type of the subclass. Here are my interfaces:
Public Interface IBase(Of T)
Function Copy() As T
End Interface
[Code]....
I have a delegate and its event in C# as below:
public delegate UsernameCredentials UsernameRequiredEventHandler( object sender, string endpoint );
public event UsernameRequiredEventHandler UsernameRequired;
On Converting the above code in VB.Net as follow :
Public Delegate Function UsernameRequiredEventHandler(ByVal sender As Object, ByVal endpoint As String) As UsernameCredentials
Public Event UsernameRequired As UsernameRequiredEventHandler
I am getting error on the above line saying that "Events cannot be declared with a delegate type that has a return type".I understand that this is not supported in VB.Net.
I was getting this error "The server returned an address in response to the PASV command that is different than the address to which the FTP connection was made." when i trying to get the response from my partner ftp server, Google implies me to change my .UsePassive to false, when i do tat, my error turn to "The operation has timed out" on .GetRequestStream() line. I tried to change my time out values to -1, and it doesn't work as well.
System.Net.WebException was unhandled
Message="The operation has timed out"
Source="System"
StackTrace:
[code]....
And the file is only few kb, by right its not suppose to that long of time to stream it And is this possible the problem cause from FTP server setting? I got no experience in setting FTP server setting so i got no idea whether my connection was restricted by the server?
I am looking for a tool that will accept an address from the user and return a 9 digit zipcode as well as validate the address or suggest an address, like on fexed or ups website. Its got to work with vb.net and asp.net Is there a tool like this available? any recommendation?
View 2 RepliesI know, it's a bit weird asking for a query to tell me my own email address right, I'll explain further...
I'm writing a COM add-in for Outlook 2007. One of the subs generates and sends an email to a particular address and this all works fine.However I have a need to have an option for the sender to be able to include themselves on the recipients list.As more than one person will be running this I cannot just set the sender's email address manually and would prefer to just add a check box on the form to enable this feature.
The only bit I'm stuck on is working out how to find the email address of the person sending the email. I could do it with an AD query against the logged on user but this needs to work for non-domain users also so need another method.
With an excel file opened, i'm trying to:
Select a Range of Non-Contiguous Cells within a Column, then return the address of the last active cell.
Below, is what I have so far: Note the section maked:
' I can't get the next bit to work: '
To make it work, so far :(
1. Create a new Project using VS-2010.
2. By default, the form should be displayed as "Form1.vb".
3. Add a Label (No need to name or set anything).
4. Add two buttons (Again, No need to name or set anything).
5. Double click on the Form...
6. With the form code displayed, Select all, then paste the following.
'Option Strict Off
'Option Explicit On
Imports System.IO
[Code].....
I have an address in the type 'array of bytes' (example):
81 ?? ?? 02 53 02 d0 27
To mess with it in visual basic, I use the format in Hex:
&H81 &H02 &H53 .....
I do not know what 'put' in relation to the 'question marks' I've tried:
&H??
&H_
&H00
And even leave it blank.
In vba, There is an address held by a long type which points to a null-terminated string, but I can't find a way to get the string from this address:
long str_address = ...
string str = ?
I am working on a client system . How i will get IPAddress of all the system connected through lan.
View 1 RepliesI need to check commandargs on the entry into an application. The value to check will either contain an ipaddress or a special case of '0' or Zero. I can't use he following because it will throw an exception on a valid ipaddress. What can I use to first determine if the value contains a value of type 10.0.110.65 before I check to see if the value is zero?
If (CInt(IncomingConnectionArgs.IP_Address) = 0)
I am just getting started with web requests using vb 2008. I saw an interesting video and article on a universal file download application which i could use asis except for one thing the download address was specified as [URL]. If at the moment i didn't have a domain name but a static ip address could I use this instead. If so how would I access the file specified in the url?
View 3 RepliesI have a need to collect only IPv4 MAC addresses. Currently I use this Code: But this brings up IPv6 MACs as well. How do I exclude the v6 MACs?
View 4 RepliesI'm trying to get the ip address of my local PC, and one one of my other PCs it gets the v4 address fine, but on this one the code:
Dns.GetHostEntry(Dns.GetHostName).AddressList(0).ToString()
returns what I guess is a IPv6 address:
fe80::9c09:e2e:4736:4c62%11
How do I get the IPv4 address?
In my project (which I inherited from someone) there are a lot of functions like:
Public Function DoSomething(ByVal s As String)
' Do something to public properties
End Function
And they are called like this:
DoSomething(s)
So the return value is ignored (which is object, as I see in the docs). Is it safe to change all these functions to Subs? Could I break something which isn't so obvious?
How do i index a return type so that it returns a value? the error is coming up for the word right.[code]...
View 10 RepliesI would like to have a function(of T) that returns a list(of T) that is assignable to a variable of list(of T).For Example:
the variable:
Private _StandardCodes As List(Of StandardCode)
the assignment:[code]....
I'm getting the error "Type paramater 'T' for ... cannot be inferred", as a result I have to use a comparable function to return a list(of Object) and then do:
_StandardCodes = (From x In AMExtensions.queryObject(GetType(StandardCode), "StandardCode") _
Select CType(x, StandardCode)).ToList
I have a TextBox control being used to capture an IPAddress from the user.I want to be able to allow them to change that IPAddres at which point the new value will be utilized by the appropriate .NET socket class to ping that new address.What other event is used with TextChanged to indicate that the user is done making changes to the TextBox. The Leave Event?
View 3 RepliesI have to create a Client/Server Application...for a project...Its not a programming class so the Professors allowing us to look code up online and just use that...Can anyone help get me started, Ive found some code but most of it uses TCPListener and Visual Studio says this is obsolete. An I can't get the IPaddress to be declared either..
View 1 RepliesIn the past I have written applications that communicate over the network. These have always made use of the System.Net and System.Net.Sockets classes and communicated over TCP connections. The connections have always required an IP address and a port. As these applications have been used by myself and colleages, setting up port forwarding and various other network settings has never been a problem. However, when developing an application for use by the general public, it obviously not a good idea to assume the user is capable of managing these settings.
[Code]...
I know a little about using a user specified type IE IIf(Of ReturnType)(ByVal expression as Boolean, ByVal TruePart As ReturnType, ByVal FalsePart As ReturnType) As ReturnType...Which works, however I've been trying to get this to work, but can't..
Protected Function InverseSign(Of ReturnType)(ByVal value As Double) As ReturnType
Dim result As String
Select Case Math.Sign(value)
Case -1: result = "+" & Math.Abs(value).ToString()
[code]....
Using try cast just gives me the error saying ReturnType has no class-constraints? whatever that means..But my goal here is to be able to return either a string or double.. However every method I've tried to convert my result string to the ReturnType doesn't work.I've also tried simply overloading the function, but I can't because they only differ by return type. So that didn't work either.
I have an ASP.NET MVC 2 application in which I am creating a custom action filter. This filter sits on the controllers in the application and verifies from the database whether that function is currently available.[code]....
View 2 RepliesIs it possible to create a function that returns a generic of unspecified type, like this?[code]...
View 1 RepliesI am building my own Message Box, I have overloaded the ShowDialog function and i wish to Change the Return Type from DialogResult to my own.
View 3 Replies