|
There is no way of getting the external ip directly. It simply does not exist in the computer.
You have to send a request outside the local network so that the ip number can be detected and sent back to you. For this you need a server that will return the ip number to you.
There are a lot of pages out there that will tell you what ip address you are using. Like Aspsidan/IP[^]. You can use a page like that to get the ip number in the response. Ideal for you would be a page that returns only the ip number in plain text, and nothing else.
---
b { font-weight: normal; }
|
|
|
|
|
|
This is what I want to do:
<br />
abstract class Item<br />
{<br />
abstract Item(int x, int y)<br />
{<br />
x = X;<br />
y = Y;<br />
}<br />
}<br />
class Transistor : Item<br />
{<br />
Transistor(int X, int Y)<br />
{<br />
x = X;<br />
y = Y;<br />
}<br />
}
But it wont work.
How could I solve it?
I got an idea on how to do it...
Like this:
<br />
abstract class Item<br />
{<br />
abstract Item(int x, int y)<br />
{<br />
x = X;<br />
y = Y;<br />
this.init();<br />
}<br />
}<br />
class Transistor : Item<br />
{<br />
init(int X, int Y)<br />
{<br />
}<br />
}
But isn't there a better way?
Niklas Ulvinge aka IDK
|
|
|
|
|
Are you trying something like this?
abstract class Item {
public Item(int x, int y) {
}
}
class Transistor : Item {
public Transistor(int x, int y) : base(x, y) {
}
}
|
|
|
|
|
The incomplete code that you show doesn't tell me what it is that you want to do.
Can you explain what it is that you are trying to accomplish?
---
b { font-weight: normal; }
|
|
|
|
|
I thought I needed to create an instance of item, wich I didn't have to and couldn't do...
I simply removed the construcor and it worked fine.
Thanks for your replies.
I'm tired and can't think really well now, but now is the only time I can program, (at other times it's only homework, school and more homework).
Niklas Ulvinge aka IDK
|
|
|
|
|
best practices of Microsoft recommends the following:
abstract class Item {
protected Item(int x, int y)
{
...
}
}
class Transistor : Item
{
public Transistor(int x, int y) : base(x,y)
{
}
}
Eduardo Diaz
site | english blog | spanish blog
|
|
|
|
|
That was what I'm looking for, thanks
Niklas Ulvinge aka IDK
|
|
|
|
|
I encountered the following problem and I am confused now. I'm sure that cunning foxes are around to help me.
Take this code:
<br />
object o = new object(); <br />
o = 1;<br />
<br />
double dValue = (double) o; <br />
The cast doesn't work and the error message comes up: An unhandled exception of type 'System.InvalidCastException' occurred.
Thanks in advance!
Chris
|
|
|
|
|
object o = new object();
o = 1;
double dValue = Convert.ToDouble(o);
Live Life King Size
Alomgir Miah
|
|
|
|
|
You are boxing an integer into an object. You can only unbox it as an integer:
(int)o
After you have unboxed the value, you can convert it to a double:
double dValue = (double)(int)o;
If you want to store a double in the object, you have to specify that the value is a double:
o = 1d;
---
b { font-weight: normal; }
|
|
|
|
|
Sounds reasonable - thanks for your replies!
Cheers,
Chris
|
|
|
|
|
Here is a class to dial, hangup, and test the internet connection being used.
Paul R. Johnson
using System;
using System.Collections;
using System.Data;
using System.Diagnostics;
namespace ComServer_Business_Logic
{
public class Dialer
{
[System.Runtime.InteropServices.DllImport("wininet.dll", EntryPoint="InternetGetConnectedState", ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
private static extern bool InternetGetConnectedState(ref Int32 lpdwFlags, Int32 dwReserved);
[System.Runtime.InteropServices.DllImport("Wininet.dll", EntryPoint="InternetDial", ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
private static extern Int32 InternetDial(IntPtr hwndParent, string lpszConnectoid, Int32 dwFlags, ref Int32 lpdwConnection, Int32 dwReserved);
[System.Runtime.InteropServices.DllImport("Wininet.dll", EntryPoint="InternetHangUp", ExactSpelling=true, CharSet=System.Runtime.InteropServices.CharSet.Ansi, SetLastError=true)]
private static extern Int32 InternetHangUp(Int32 lpdwConnection, Int32 dwReserved);
private enum Flags: int
{
//Local system uses a LAN to connect to the Internet.
INTERNET_CONNECTION_LAN = 0X2,
//Local system uses a modem to connect to the Internet.
INTERNET_CONNECTION_MODEM = 0X1,
//Local system uses a proxy server to connect to the Internet.
INTERNET_CONNECTION_PROXY = 0X4,
//Type Visual Basic 6 code here...
//Local system has RAS installed.
INTERNET_RAS_INSTALLED = 0X10
}
//Declaration Used For InternetDialUp.
private enum DialUpOptions: int
{
INTERNET_DIAL_UNATTENDED = 0X8000,
INTERNET_DIAL_SHOW_OFFLINE = 0X4000,
INTERNET_DIAL_FORCE_PROMPT = 0X2000
}
private const int ERROR_SUCCESS = 0X0;
private const int ERROR_INVALID_PARAMETER = 0X87;
private Int32 mlConnection;
public string GetConnectionType()
{
Int32 lngFlags = 0;
if (InternetGetConnectedState(ref lngFlags, 0))
{
//connected.
if ((lngFlags & (int)Flags.INTERNET_CONNECTION_LAN)!=0)
{
//LAN connection.
return "LAN connection.";
}
else if ((lngFlags & (int)Flags.INTERNET_CONNECTION_MODEM)!=0)
{
//Modem connection.
return "Modem connection.";
}
else if ((lngFlags & (int)Flags.INTERNET_CONNECTION_PROXY)!=0)
{
//Proxy connection.
return "Proxy connection.";
}
return "Not connected.";
}
else
{
//not connected.
return "Not connected.";
}
}
public void Connect()
{
Int32 DResult = 0;
DResult = InternetDial(IntPtr.Zero, "My Connection", Convert.ToInt32(DialUpOptions.INTERNET_DIAL_UNATTENDED), ref mlConnection, 0);
if (DResult == ERROR_SUCCESS)
Console.WriteLine("Dial Up Successful");
else
Console.WriteLine("UnSuccessFull Error Code");
}
public void Disconnect()
{
Int32 Result = 0;
if (! (mlConnection == 0))
{
Result = InternetHangUp(mlConnection, 0);
if (Result == 0)
Console.WriteLine("Hang up successful");
else
Console.WriteLine("Hang up NOT successful");
}
else
Console.WriteLine("You must dial a connection first!");
}
}
}
|
|
|
|
|
Paul R. Johnson wrote:
Here is a class to dial, hangup, and test the internet connection being used.
This would more appropriately belong as an article submission.
|
|
|
|
|
Sorry,
I am not sure how to write an article and submit it. It was code that I was struggling with, and I finally got it to work correctly.
I saw that others were having problems with the same results, so I just wanted to help out. 
Paul
|
|
|
|
|
can some one help me with this project plzz
Standard telephone keypads contain the digits 0 through 9. The numbers 2 through 9 each have three letters associated with them.
Many people find it difficult to memorise phone numbers, so they use the correspondence between digits and letters to develop eight-letter words that correspond to their phone numbers. For example, a person whose telephone number is 4263-7663 might use the correspondence in Table 1 to develop the eight-letter word “HANDSOME” so that people can easily remember his phone number. Each eight-letter word corresponds to exactly one eight-digit telephone number. A delivery service could surely do so with the number 3354-8379 (i.e., “DELIVERY”).
Each eight-digit phone number corresponds to many separate eight-letter words. Unfortunately, most of these represent unrecognisable juxtapositions of letters. It is possible, however, that the owner of a barber shop would be pleased to know that the shop’s telephone number, 4247-2888, corresponds to “HAIRCUTS”. A hospital with the phone number 4677-4825 would be pleased to know that the number corresponds to the letters “HOSPITAL”. A body shop owner would be pleased to know that the shop’s number, 2639-7467, corresponds to “BODYSHOP”.
Write a C program that, given an eight-digit number, writes to a file every possible eight-letter word combination corresponding to that number. There are 6561 (38) such words. Avoid phone numbers with the digits 0 and 1.
Digit Letter
2 A B C
3 D E F
4 G H I
5 J K L
6 M N O
7 P R S
8 T U V
9 W X Y
|
|
|
|
|
From the comp.lang.c++ faq, but appropriate to any langauge.
"If I did your homework for you, then you might pass your class without learning how to write a program like this. Then you might graduate and get your degree without learning how to write a program like this. You might become a professional programmer without knowing how to write a program like this. Someday you might work on a project with me without knowing how to write a program like this. Then I would have to do you serious bodily harm." [Thanks to Jack Klein]
|
|
|
|
|
Here Here.
Dave Shaw
History admires the wise, but elevates the brave. - Edmund Morris
|
|
|
|
|
 wat is this
|
|
|
|
|
Hi,
I keep getting an error when I try to insert a new record into a table (SQL 2000) that has a column that I've configured as 'Unique Null Allowed'. I used Visual Studio (2003) IDE SQL Data Adapter Wizard to create the stored procedures, data adapter, and dataset using a simple select statement with one paramater. Everything works fine except the 'Unique Null Allowed' column requires a value on Insert or I get an error. What am I doing wrong?
|
|
|
|
|
If you have a column which is Unique and Allow nulls then
only one record will be allowed to have null value in this columns because if other record was inserted with null value in this unique columns it will not be allowed because this column is unique and other record already have null value in this column
MCAD
-- modified at 20:54 Friday 2nd September, 2005
|
|
|
|
|
I want to filter out some email address from a block of text. currently i use something like this which i found over internet.
[\\w]+@[\\w]+.[\\w]{2,3}
but it doesn't pick all email address, like some.one@some.ac.in
can u help me,
thanks,
Derick
Visit my tech blog http://techcapsules.blogspot.com
|
|
|
|
|
You have to include some more characters in order to catch all valid email addresses:
[\w\-%~\.]+@[\w\-\.]+\.[\w]{2,4}
This will only match strictly standard conformant email adresses, though. You might want to include even more characters, as some people have email adressed that does not conform to the standard.
---
b { font-weight: normal; }
|
|
|
|
|
Try this
string s = @"^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$";
Regex ex = new Regex(s);
Match match = ex.Match("g_s+gavcom.com");
if ( match.Success )
{
MessageBox.Show("Found");
}
Live Life King Size
Alomgir Miah
|
|
|
|
|
In VS 2003, I used CaptionText in DataGrid control. I have migrated my form
in VS 2005 using DataGridView. Does DataGridView has CaptionText property.
How do I accomplish this task if the property does not exist? Any alternate
way of setting CaptionText or Title of the DataGridView?
Help appreciated.
Thanks
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
