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using System ;
using System.Runtime ;
using System.Runtime.InteropServices ;
public class InternetCS
{
//Creating the extern function...
[DllImport("wininet.dll")]
private extern static bool InternetGetConnectedState( int out Description, int ReservedValue ) ;
//Creating a function that uses the API function...
public static bool IsConnectedToInternet( )
{
int Desc ;
return InternetGetConnectedState( out Desc, 0 ) ;
}
}
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using System ;
using System.Runtime ;
using System.Runtime.InteropServices ;
public class InternetCS
{
//Creating the extern function...
[DllImport("wininet.dll")]
private extern static bool InternetGetConnectedState( out int Description, int ReservedValue ) ;
//Creating a function that uses the API function...
public static bool IsConnectedToInternet( )
{
int Desc ;
return InternetGetConnectedState( out Desc, 0 ) ;
}
}
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This is a lot easier in .NET 2.0. Check out the new System.Net.NetworkInformation namespace. The NetworkInterface class contains a property called OperationalStatus that contains an Enumeration value indicating the current status. The namespace also contains a Ping class that you can use to check the availability of a specific address and a NetworkAvailabilityChangedEventHandler Delegate that you can hook up to methods that you want called when network availability changes.
This should be a lot more fun than typing a URL into your browser. 
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Thank You
I this this will solve my problems.
Thanks again
Jijo
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How do I install .Net 2.0? I have installed .Net framework 2.0, but when I use Visual Studio 2003 and view the About dialog, it still shows me .Net framework 1.1? What do I have to do in order to begin using .Net framework 2.0?
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Hi,
I don't think you can use .NET 2.0 framwork with VS2003. It will still only pickup version 1.1. I think it can only be used with VS2005, or the express products.
If anyone disagrees with me, please let me know.
Regards,
ma se
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Hope this will work, as per your requirement...
For installing .Net 2.0 download from the Internet and Install.
Go to your respective framework folder May be "C:\WINNT\Microsoft.NET\Framework\"in you command prompt...
cd v1.1.4322(which is your directory for .net 1.1)
than run
aspnet_regiis -u (this will uninstall your .net 1.1)
then go to 2.0 framework directry
may be v2.0.50727 or v2.0.*
aspnet_regiis -i (this will install your .net 2.0)
you may check it wiht
aspnet_regiis -lv (this will List all the version...)
BapiLolly
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to sum up the other answers, you can develop for framework .NET 2.0 only with VS2005
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As others have said, only VS 2005 will develop apps for .NET 2.0. If you don't have it, you can download the free Express editions from here[^]. With some limitations (which most really don't matter), the Express editions are totally free, and can be used for commercial development.
Luis Alonso Ramos
Intelectix
Chihuahua, Mexico Not much here: My CP Blog!
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Installing .Net 2.0 is fine. Even if you don't have Visual Studio 2005, 2.0 will let you run apps that may have been developed in VS2005, so don't uninstall it.
Note: do NOT unistall .Net 1.1. If you do, anything developed in VS2003 will not run. .Net 1.1 and .Net 2.0 can co-exist togeather, with no problems.
Roy.
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How do I backup up my SQL Server DB from C#?
Is this the best way
dim c as object<br />
set c = createobject("adodb.connection")<br />
c.open "provider=SQLOLEDB;server=yourSQlServerName;UID=login_name;PWD=login_pwd;"<br />
c.execute "BACKUP DATABASE yourdb TO DISK='C:\backup\yourdb.bak' WITH INIT"<br />
c.close<br />
set c = nothing
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That appears to be VBScript. Are you new to C# and .NET development? You can use ADO.NET to execute your SQL commands in C#. You can also use SQLDMO or SMO for performing maintenance tasks on SQL Server. SMO is available only in SQL Server 2005 versions. A search on MSDN for SQLDMO or SMO should return plenty of results. Good luck.
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I want to know the ipaddress(or)username of the computer who are trying to access my webapplication in an intranet.
WORK SMATER
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use this request.servervariables("REMOTE_ADDR")
<< >>
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If it's an ASP.NET application (or web service), in your Page-derived class you can use the Request property to get an HttpRequest object which contains UserHostAddress property.
void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
lblCallingIp.Text = this.Request.UserHostAddress;
}
}or something like that 
-- LuisR
Luis Alonso Ramos
Intelectix - Chihuahua, Mexico
Not much here: My CP Blog!
The amount of sleep the average person needs is five more minutes. -- Vikram A Punathambekar, Aug. 11, 2005
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Request.UserHostAddress;
Gets the remote clients address
"Aim to go where U have never been B4 and Strive to achieve it"
http://groups.yahoo.com/subscribe/dotnetforfreshers
http://himabinduvejella.blogspot.com
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Hello,
I have a form with several controls whose content is saved to an internal object when the control gets the Validated event.
The problem is that when my Save button is clicked on the ToolStrip, the control that currently has focus doesn't lose it, so it never gets the Validating/Validated events.
Using the good-old ToolBar from .NET 1.x, I could try to set the focus to the toolbar in my ButtonClick event handler, and if it failed, I knew the Validating event had prevented focus getting out of it.
But while the ToolStrip has an ItemClicked event, it seems it's only fired for a ToolStripDropDown, and not for a regular ToolStrip.
I tried catching the Click event, but I didn't get it either.
So, any ideas? I don't want to have to do it in the Click handler for every item.
-- LuisR
Luis Alonso Ramos
Intelectix - Chihuahua, Mexico
Not much here: My CP Blog!
The amount of sleep the average person needs is five more minutes. -- Vikram A Punathambekar, Aug. 11, 2005
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Hi everyone,
I've found this code that can send SMTP commands via sockets (25).
The problem is when I send the command: "rcpt to:whatever@yahoo.com", I get a server response: "503 This mail server requires authentication ...".
Is there a way to create this authentication, to make this happen?
Thanks in advance,
Danny
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Create the authentication???
You're misunderstanding what it wants. That particular server want's you to login using a username and password before you can do anything with it. If you don't have an account on the server, you're not going to be able to do anything with it.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
-- modified at 22:09 Thursday 23rd March, 2006
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So you're saying that it can't be done?
So how are the SMTP based apps work?
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DannyAdler wrote: So you're saying that it can't be done?
No! I'm saying that the server wants a username and password before you can use it!
DannyAdler wrote: So how are the SMTP based apps work?
I think you better read up on SMTP before going any further with that app. Also, you might want to read up on why that server is asking you to authenticate before you use it.
SMTP Reference[^]
RFC2821: Simple Mail Transfer Protocol (Replacing the older SMTP standards)[^]
EMail Spoofing[^]
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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I would like to do raster operation, that is similar to SetROP2 in the GDI...
Kindly apoint me to perform this, to be able to achieve copypen and maskpen
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Doesn't exist in GDI+. You could use pinvoke to make the GDI calls instead.
Christian Graus - Microsoft MVP - C++
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