vb 2008 get an ip address of a website?

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Hi,

I have the following code which gets the local ip address which I set up so I have something to work on:

VB

Dim ipEntry As IPHostEntry = Dns.GetHostByName(Environment.MachineName)
        Dim IpAddr As IPAddress() = ipEntry.AddressList
        Dim i As Integer

        TextBox3.Text = IpAddr(0).ToString()

The above code displays the local ip address in a textbox but my question is how do I change the code so vb gets the ip address of a website entered in a textbox called 'textbox2'?

Thanks in advance to any helpers

Posted 19-Aug-10 1:50am

hamza_786

Updated 19-Aug-10 2:23am

LittleYellowBird

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3 solutions

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Gregory Gadow · Answer 1 · 2010-08-19T03:38:00

Solution 1

Instead of using Environment.MachineName, use TextBox2.Text.

Posted 19-Aug-10 3:38am

Gregory Gadow

Comments

hamza_786 19-Aug-10 9:48am

if i change that to 'textbox2.text' then i get an error saying socket exception was unhandled whilst highlighting 'ipEntry As IPHostEntry = Dns.GetHostByName(TextBox1.Text)'

do you have solution?

Gregory Gadow 19-Aug-10 12:41pm

If TextBox2 holds the domain that you are looking up, then why would you be passing TextBox1.Text? Also, if the value passed to GetHostByName is not a valid, registered domain, you will get a socket exception: make sure that you are entering a valid value for testing.

Nyarost · Answer 2 · 2010-08-19T03:51:00

Solution 2

First. Add try...catch. An exception text may help you.

Posted 19-Aug-10 3:51am

Nyarost

Comments

hamza_786 19-Aug-10 9:54am

no luck mate.can you copy my code from above and tell me how you are saying my code should look like please. i have it set up as below:

Try
Dim ipEntry As IPHostEntry = Dns.GetHostByName(TextBox1.Text)
Dim IpAddr As IPAddress() = ipEntry.AddressList
Dim i As Integer

TextBox3.Text = IpAddr(0).ToString()

Dim hostname As IPHostEntry = Dns.GetHostEntry(TextBox1.Text)
Dim ip As IPAddress() = hostname.AddressList

TextBox3.Text = ip(0).ToString()

Catch ex As Exception

End Try

Nyarost · Answer 3 · 2010-08-19T03:59:00

Solution 3

Try
	Dim ipEntry As IPHostEntry = Dns.GetHostByName(TextBox1.Text)
	Dim IpAddr As IPAddress() = ipEntry.AddressList
	Dim i As Integer

	TextBox3.Text = IpAddr(0).ToString()

	Dim hostname As IPHostEntry = Dns.GetHostEntry(TextBox1.Text)
	Dim ip As IPAddress() = hostname.AddressList

	TextBox3.Text = ip(0).ToString()

Catch ex As Exception
	TextBox3.Text = ex.ToString()
End Try

Then you'll see what caused an exception I suppose. I am not VB.NET coder, so I cannot test the code.

Posted 19-Aug-10 3:59am

Nyarost

Comments

hamza_786 19-Aug-10 10:04am

thank you that problem is fixed but it is still giving me my local ip address back.

there is something wrong in these line, i think:

TextBox3.Text = ip(0).ToString()

Catch ex As Exception
TextBox3.Text = ex.ToString()

Nyarost 19-Aug-10 10:10am

Try tracing line by line. I am sure you'll see content of all variables ;)

hamza_786 19-Aug-10 10:11am

thanks