.Net: Parse IP address String

[romcab]

Hi guys,

just want to ask how can I convert an IP address that is declared as String to type IPAddress? The reason why I come up with String IP address is because it came from a file. the connect method of socket class need IPaddress or host.

Hope you can help me...

[mzmishra]

IPAddress ipAddr = IPAddress.Parse(strHostName);

[Shashi Sadasivan]

Hi romcab

I changed your Topic title to make it more meaningful and appropriate to your query

Please remember to provide a meaningful Title for any threads started (Please Use Appropriate Titles for New Threads!). This helps to ensure that other members, and also the general public, will have a better chance of finding answers to any similar questions.

- Shashi

[romcab]

Hi..

I dont have the hostname, I only have an Ip address but it's on type String since I get it on a textfile. My question is how can I translate the IpAdd of type String to type IPAdress..

Thanks

IPAddress ipAddr = IPAddress.Parse(strHostName);

[mzmishra]

IPAddress.Parse Method Converts an IP address string to an IPAddress instance.
A string that contains an IP address in dotted-quad notation for IPv4 and in colon-hexadecimal notation for IPv6.

[romcab]

IPAddress.Parse Method Converts an IP address string to an IPAddress instance.
A string that contains an IP address in dotted-quad notation for IPv4 and in colon-hexadecimal notation for IPv6.

my mistake...Your right. I follow your advice but I think I still have an error...Below is my code, I passed Ip "192.168.20.125" which is my pc ip address but after I looked at myIpAdd value i didnt see the 192.168.20.125. Is there anything wrong?

Private Sub SendData(ByVal IpAdd As String, ByVal sData As String)
 
        Dim myIpAdd As IPAddress
 
        'create a socket
        Dim isocket As Socket
        isocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
 
        myIpAdd = IPAddress.Parse(IpAdd)
 
        'resolve IPAddress
        'myIpAdd = Dns.GetHostAddresses(IpAdd)
 
        'connect to remote host
        Try
            isocket.Connect(myIpAdd, 80)
 
        Catch se As SocketException
            MsgBox("Socket Exception: {0}", se.SocketErrorCode)
 
        Catch ex As Exception
            MsgBox("UnExpected exception : {0}", ex.ToString)
 
        End Try
 
    End Sub

[Shashi Sadasivan]

Hi,
is there any exception that is being thrown?

If you want to check use the myIpAdd.ToString() to check if the IPAddress is correct.
It should show the same (worked for me)

[romcab]

Hi,
is there any exception that is being thrown?

If you want to check use the myIpAdd.ToString() to check if the IPAddress is correct.
It should show the same (worked for me)

Hi there,

Yes it is the same. The Address member is obsolete based on msdn. Anyway, is there a way how can I typecast String type to a Byte() ? Sorry, this is my first time to use VB that's why i'm having this weird/stupid questions.

Thanks

[Shashi Sadasivan]

if you use the Parse method then it creates the class for you with the required ip address.
Its only the Address Property which is obsolete.

Your IPAddress class object is fine otherwise

is there an exception due to which you are worried with this object?

[mzmishra]

http://www.chilkatsoft.com/faq/DotNetStrToBytes.html

[romcab]

if you use the Parse method then it creates the class for you with the required ip address.
Its only the Address Property which is obsolete.

Your IPAddress class object is fine otherwise

is there an exception due to which you are worried with this object?

I'm receiving Socket exception when I changed the port number.

[romcab]

http://www.chilkatsoft.com/faq/DotNetStrToBytes.html

Thanks...I have one last question.. I'm having hard time to add double quote to a string.
example:
stemp1 = "<" + stemp + ">" = <stemp>

but how about for double quote?
output should be: "stemp"?

I found one answer but it only applies when value of string is constant.
example
stemp = ""Hello"" = "Hello"

[Shashi Sadasivan]

the \ is used as an escape character

string s = "\"hello\"";
that will give the output "hello" and not hello

[romcab]

the \ is used as an escape character

string s = "\"hello\"";
that will give the output "hello" and not hello

Hi tnx for all your help. I was able to send the data but byte per byte. I would like to try sending the whole string but there is not connect overload that can accept string as Input. There is another overload method which uses IList but I cannot understand. Can you help me guys how to use it?

Tnx again...

[romcab]

the \ is used as an escape character

string s = "\"hello\"";
that will give the output "hello" and not hello

Hi...

It's not working when hello is a variable...It only works for constant...

[Plater]

All you are doing is talking to your webserver on port 80? Try the HttpWebRequest object?


To answer you string question:

dim dan as string 
dim danwithquotes as string
 
dan = "hello";
danwithquotes = "\"" + dan + "\"";
'now dan will =                  hello
'and danwithquotes will =  "hello"
 

[romcab]

All you are doing is talking to your webserver on port 80? Try the HttpWebRequest object?


To answer you string question:

dim dan as string 
dim danwithquotes as string
 
dan = "hello";
danwithquotes = "\"" + dan + "\"";
'now dan will =                  hello
'and danwithquotes will =  "hello"
 

Hi...
The String don't works for me:
'test ""
Dim stemp As String = "Hello"
stemp = "\"" + stemp + " \ ""

I'm using another port with my code, i just forgot to change my port number in my previous port.

[Plater]

Hi...
The String don't works for me:
'test ""
Dim stemp As String = "Hello"
stemp = "\"" + stemp + " \ ""

I'm using another port with my code, i just forgot to change my port number in my previous port.

That is my fault, forgot VB uses & and not +

stemp = "\"" & stemp & " \ ""