C# Discussion Boards - CodeProject

how to prevent user created ports being restricted by antivirus software

prasadbuddhika1-Mar-09 20:23

1-Mar-09 20:23

in my application i create a socket with the port no 7575 which is a well known port. but the problem is i'm not sure if this will be blocked when an anti virus software installed. so what i want is to prevent this risk by setting the port not to be blocked in any anti virus software.means with out touching the anti virus software, need to do it only through my application.any idea ?

Re: how to prevent user created ports being restricted by antivirus software

0x3c01-Mar-09 20:27

0x3c0

1-Mar-09 20:27

First of all, ports are blocked in general by firewalls. If the user is running Vista, you can use the COM interface of Windows Firewall to unblock a port. On the other hand, this unblocks the port for every application. Why not just use a different port (I use 65535, there's a list on the internet of the ports each application uses [an RFC I think] so you could also just choose one not on that list)

paint APPLICATION code in "C# NET"

poonam jagdale1-Mar-09 20:21

poonam jagdale

1-Mar-09 20:21

we dont konw how to develop code for drag and drop inn c#.

Re: paint APPLICATION code in "C# NET"

0x3c01-Mar-09 20:24

0x3c0

1-Mar-09 20:24

You may find this link enlightening[^]. It explains it better than I ever could

exe files

mrithula81-Mar-09 19:57

mrithula8

1-Mar-09 19:57

Hi i used the following code to run all the exe files listed in the list box control....listbox control contains a list of 10 exe files....
Now, if only 5 out of the 10 are currently running it should display a green colour otherwise a red colour....
How can i do this?

private void Start_Click(object sender, EventArgs e)
       {
           String n2,n1,n3,n4;
           n1 = lb4.Text;
           n2 = lb5.Text;
           n3 = lb6.Text;
           n4 = lb7.Text;
           if (cb.Checked)
           {
               n1 = lb4.Text;
              // System.Diagnostics.Process.Start(n1);
               proc = Process.Start(n1);
               proclist.Add(proc);

           }

           if (cb1.Checked)
           {
               n2 = lb5.Text;
               //System.Diagnostics.Process.Start(n2);
               proc = Process.Start(n2);
               proclist.Add(proc);

           }

         if (cb3.Checked)
           {
               n3 = lb6.Text;
               //System.Diagnostics.Process.Start(n2);
               proc = Process.Start(n3);
               proclist.Add(proc);

           }

           if (cb4.Checked)
           {
               n4 = lb7.Text;
               //System.Diagnostics.Process.Start(n2);
               proc = Process.Start(n4);
               proclist.Add(proc);

           }

 }

Re: exe files

Christian Graus1-Mar-09 20:08

Christian Graus

1-Mar-09 20:08

You'd have to iterate over open processes and work out if any come from this exe. You might also consider making your code a bit more readable, and perhaps even have it work with any number of listbox items. this is really ugly and messy

Christian Graus

Driven to the arms of OSX by Vista.

Field Link in Datagrid

Ramkithepower1-Mar-09 19:38

Ramkithepower

1-Mar-09 19:38

Hi ,

I am developing a website with DATA GRID that displays the details of a student. When I click on the registration no of the student, a new page should open with the full details of the student(Datagrid only shows important details of the student).

Please discuss your ideas to achieve this.

Ram
--------------------------------------
Defeat is not the worst of failures. Not to have tried is the true failure.

Re: Field Link in Datagrid

0x3c01-Mar-09 20:35

0x3c0

1-Mar-09 20:35

Maybe you could use the HyperLinkColumn class. It could be the column where the registration numbers of the students are; bind the column text and hyperlinks to the same database where you draw the student data from. You can read more about this class here.

# I/O operatinons

shefa' isied1-Mar-09 19:37

shefa' isied

1-Mar-09 19:37

how i can retrieve the number of input/output operations generated by each process in the task manager using c#?

Re: # I/O operatinons

Christian Graus1-Mar-09 19:40

Christian Graus

1-Mar-09 19:40

I doubt you can, unless you use interop.

Christian Graus

Driven to the arms of OSX by Vista.

datagrid

cst_kvp1-Mar-09 19:21

cst_kvp

1-Mar-09 19:21

How to get the values through ItemCommand Event in datagrid?

Re: datagrid

Christian Graus1-Mar-09 19:41

Christian Graus

1-Mar-09 19:41

What values do you want ?

Christian Graus

Driven to the arms of OSX by Vista.

exceptions

aratireddy1-Mar-09 19:05

aratireddy

1-Mar-09 19:05

using System;
public class class1
{
static void Main(string[]args)
{
try
{
string s1 = args[0];
string s2 = args[1];
int i1 = int.Parse(s1);
int i2 = int.Parse(s2);
int i3 = i1 + i2;
Console.WriteLine(i3);
}

catch (Indexoutofrange Exception)
{
Console.WriteLine(Exception.message);
}
Console.WriteLine("hello");
}
}
when i am running the application it shows the following error
the type or namespace name indexoutofrange could not be found and one more error is system.exception does not contain a definition for message

Re: exceptions

ABitSmart1-Mar-09 19:31

ABitSmart

1-Mar-09 19:31

aratireddy wrote:
the type or namespace name indexoutofrange could not be found

Its IndexOutOfRangeException and not Indexoutofrange, case sensitive

aratireddy wrote:
ne more error is system.exception does not contain a definition for message

is because of,

aratireddy wrote:
catch (Indexoutofrange Exception)
{
Console.WriteLine(Exception.message);

Its Message and not message. Exception is a class in the .Net library, use some other name for the exception variable.

Voice conference application

yesu prakash1-Mar-09 18:59

yesu prakash

1-Mar-09 18:59

Hi,
Can anybody help me to develop a voice conference application? I made a deep search in internet to study about voice conference application, but i didt find any helpful topics.
What are the techniques to develop a voice conference application?

Thankyou,
yesuprakash

Re: Voice conference application

ABitSmart1-Mar-09 19:37

ABitSmart

1-Mar-09 19:37

Help[^]. If you still need help, then RentACoder[^]

Re: Voice conference application

yesu prakash1-Mar-09 19:49

yesu prakash

1-Mar-09 19:49

what is the technology used to develop voie chat application.

Re: Voice conference application

ABitSmart1-Mar-09 19:56

ABitSmart

1-Mar-09 19:56

C#[^] ??

Did you read this [^]?

LIB file error

milapjp1-Mar-09 18:09

milapjp

1-Mar-09 18:09

hi friends i have created 1 activex in that i have error at run time which is

"Could not load file or assembly 'DirectShowLib-2005, Version=2.0.0.0, Culture=neutral, PublicKeyToken=67e7b740cdfc2d3f' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)"
Source="StreamVideoComponent2"

CAN U PLZ HELP ME IN THIS MATTER

closing tcp where socket is connected

A_A1-Mar-09 17:49

A_A

1-Mar-09 17:49

hi all ...
I found that alot of (server , client) applications have this part of code in the "server"

<br />
void StartMethod()<br />
        {<br />
<br />
<br />
            mytcpl = new TcpListener(5020);         // Open The Port<br />
            mytcpl.Start();                         // Start Listening on That Port<br />
            mysocket = mytcpl.AcceptSocket(); // Accept Any Request From Client and Start a Session<br />
            myns = new NetworkStream(mysocket);     // Receives The Binary Data From Port<br />
            mysr = new StreamReader(myns);             // Convert Received Data to String<br />
            string order = mysr.ReadLine();<br />
            if (order == "SD")<br />
               <br />
            // we can add anything here<br />
          <br />
<br />
            else MessageBox.Show(order + " Request Not Found");<br />
            mytcpl.Stop();                             // Close TCP Session<br />
//when stop the tcp listener doesn't that mean that we stop 'disconnect' the socket<br />
<br />
// SO, WHY DO WE CHECK THE SOCKET HERE<br />
<br />
   <br />
<big>if (mysocket.Connected == true)//Looping While Connected to Receive Another Message<br />
            {<br />
                while (true)<br />
                {<br />
                    StartMethod();                     // Back to First Method<br />
                }<br />
            }<br />
        }</big><br />

the Question is :
why to check if the 'socket' is connected where it is already closed by stoping the 'TCP Listener' ?

thanx

Re: closing tcp where socket is connected

Bharat Jain1-Mar-09 20:42

Bharat Jain

1-Mar-09 20:42

A_A wrote:
else MessageBox.Show(order + " Request Not Found");
mytcpl.Stop(); // Close TCP Session
//when stop the tcp listener doesn't that mean that we stop 'disconnect' the socket

No when we stop the TCP listener it does not mean that we will be disconnected .
To make it more clear , a TCP listener is a class which waits for the connection to happen at specified port and IP , the listener does not participate in actual connection and data transfer , the actual connection and data transfer is carried out object of class Socket (mysocket variable in above code) , mytcpl.Stop(); stop the listener that mean that we are no more accepting new connection , the the already connected connection are still there

I hope this is understandable Smile | :)

Thanks

-Regards
Bharat Jain
bharat.jain.nagpur@gmail.com

Re: closing tcp where socket is connected

A_A2-Mar-09 3:37

A_A

2-Mar-09 3:37

thank you

add image into image list using image index ( problem)

S K Y1-Mar-09 15:11

S K Y

1-Mar-09 15:11

i have imagelist inside listview box. i need to add that imagelist images in to another imagelist.how can i do that......

i can get imgage index by

ListViewItem item = e.Dtat.GetData(typeof(ListViewItem)) as ListViewItem;

item.imageindex by this i can get image index of fistlist view.
so how can i add the image in to new image list using this image index??
or is there got any other possible way...

A S E L A

Re: add image into image list using image index ( problem)

Luc Pattyn1-Mar-09 16:22

Luc Pattyn

1-Mar-09 16:22

Hi,

I haven't used ImageList class yet, but I just read some of the documentation, and that helps.
An ImageList has a Images property, which is a collection, meaning you can get one of its members by using an index, you can clear the collection by calling Clear(), and adding to the collection by calling Add(). So this would be my first attempt:

// having a listview that may or may not have some images in its list already,
// and having another list of images, we copy the latter in the former:
foreach(Image image in ImageList1) {
    myListView.Images.Add(image);
}

Luc Pattyn [Forum Guidelines] [My Articles]

- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets

modified on Sunday, June 12, 2011 8:56 AM

Re: add image into image list using image index ( problem)

S K Y1-Mar-09 21:07

S K Y

1-Mar-09 21:07

ya but how can i call image by image index.....i don't have image path oretc have pnly image index of other image list....

A S E L A

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