Re: Socket Connectivity Behind Router or Proxy??? - C# Discussion Boards

Re: need help with a function call

23-Jul-06 21:12

This can't work because for it to work, you need to put the signature back as it was, object sender and EventArgs ea. When you change the argument types, it ceases to be an event handler. You need to find another way to do what you're doing.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Guffa23-Jul-06 21:16

Guffa

23-Jul-06 21:16

The method that you use to handle the event has to have the same data types for the parameters as the delegate definition. You can't make up your own parameters and expect the event to guess what you are trying to do.

The first parameter is of type object, and is a reference to the control that caused the event. Type cast the reference to the actual data type of the control to access it's members.

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b { font-weight: normal; }

Socket Connectivity Behind Router or Proxy???

RizwanSharp23-Jul-06 7:51

23-Jul-06 7:51

Hello Devs,
I'm working on a Network Application using Socket. If I'm behind a Proxy Server or Royter and I try to connect to a computer on internet which is Direct to internet, it connects successfully. Big Grin | :-D

But no body can connect to me using the same program because I'm not direct to internet. Cry | :((

Can any body tell me how to work around this problem? Confused | :confused:

I'll be really thankfull to you for your support so far.

Best Regards,
rizwanSharp;

stancrm23-Jul-06 8:14

23-Jul-06 8:14

Activate the port forwarding in router.
For example:

internal : 10.0.0.5 (port 5000)
external : 200.200.200.200 (port 5000)

if the port forwarding is activated, then
the packet to 200.200.200.200(5000) will
be forwarded to 10.0.0.5(5000).

Good luck... Smile | :)

RizwanSharp23-Jul-06 8:19

23-Jul-06 8:19

I dont know much about Routers. I got this complaint when I tried to connect to a computer behind the router.

Please tell me a little bit proceedure to do so.

One more thing, If this is really needed then who other network programs like Yahoo, MSN, eMule work without configuration.

Please guide me in this regard,

Best Regards,
rizwanSharp;

stancrm23-Jul-06 8:22

Re: Socket Connectivity Behind Router or Proxy??? [modified]

23-Jul-06 8:22

You must check the manual of your router. The most router has a web configuration. It is easy to configure something like that. Just put your internal IP, put the port, activate and save. That's all.
MSN or Yahoo work through a uPnP protocol. You don't need to activate port forwarding for that.

RizwanSharp23-Jul-06 8:25

23-Jul-06 8:25

uPnP

I want to do the same Any Guidance ????
I dont want to force 1000's of clients of my system to configure their routers and imagine if some of them are public properties then how you cna cofigure them ???

Please some more help.
Best Regards,
rizwanSharp;

-- modified at 14:27 Sunday 23rd July, 2006

stancrm23-Jul-06 8:30

23-Jul-06 8:30

That's what I tell you is a normal configuration in a simple router like DSL router.
If you have a 1000 of clients, that means your network is a company network. You
must do more than port forwarding. I don't have any experience like that. Probably
you must change your routing configuration.

RizwanSharp23-Jul-06 8:33

23-Jul-06 8:33

Hmmm OK I check it. And what about Proxy Case?
Any clue if I want to connect to a coputer which is Behind a Proxy server in a LAN but I'm on internet???

Best Regards,
Thanks Alot!!!
rizwanSharp;

stancrm23-Jul-06 8:58

To remove errors from the program.

23-Jul-06 8:58

Proxa means : hide your IP, show the IP from proxy.
That means, what you want, is against the concept from proxy.

arun.m23-Jul-06 7:14

arun.m

23-Jul-06 7:14

hi,
I have written a program of linked list using data structure
but compiler showing following errors
1-> The code has no effect.
2-> statement missing.
3-> Unreachable code.
4-> expression syntax.

Anybody can tell me what can i do for remove these errors from the program.

arun

Re: To remove errors from the program.

RizwanSharp23-Jul-06 7:40

Re: To remove errors from the program.

23-Jul-06 7:40

Can you share the code?

rizwanSharp;

mav.northwind23-Jul-06 10:22

mav.northwind

23-Jul-06 10:22

Hi!
1->Remove the code since it has no effect
2->Insert the missing statement
3->Remove the code since it's never reached
4->Correct the syntax (count your brackets, for example)

Regards,
mav

--
Black holes are the places where god divided by 0...

Re: To remove errors from the program.

Christian Graus23-Jul-06 10:44

IVR (Interactive Voice Response)

23-Jul-06 10:44

arun.m wrote:
Anybody can tell me what can i do for remove these errors from the program.

Well, I have an ISP, but I don't have ESP, so I guess you need to post the code. Then I need to ask, what are you writing it for ? If for a class, fair enough. But don't USE your linked list, use the containers built into the framework.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

mohsen_dez23-Jul-06 7:03

mohsen_dez

23-Jul-06 7:03

Hi I Want To create an IVR (Interactive Voice Response) Application in C#
can anybody help me to find some source code or guide me to write that.
thanks

passing data to another form

simsen23-Jul-06 5:21

23-Jul-06 5:21

Hi,

I have the following code, which works perfect, when I makes af DataGridView with drag and drop (the code pass over the FakturaId to the new form, so I can make a select on this)

System.Data.DataRowView SelectedRowView;

fakturasystemDataSet.FakturaRow SelectedRow;

SelectedRowView = (System.Data.DataRowView)fakturaBindingSource.Current;

SelectedRow = (fakturasystemDataSet.FakturaRow)SelectedRowView.Row;

FakturaVis FakturaVisForm = new FakturaVis();

FakturaVisForm.LoadFakturaVis(SelectedRow.FakturaID);

FakturaVisForm.Show();

But now I have made my own dataset and adapter and I have some problems with the above code. I don't know, how I get the FakturaRow in intellisense (how I get this into the code, where I instansiate the dataset and the adapter)?

Is my dsView the same as, the system generated fakturaBindingSource?

My code where I instansiate the dataset and the adapters:

private void loadKundeFaktura()

{

//create a connection string to the access database

OleDbConnection cn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;

User Id=;Password=;

Data Source=" + myDB);

// Create the DataSet

ds = new DataSet("KundeFaktura");

// Fill the Dataset with Kunder, map Default Tablename

// "Table" to "Kunder".

da1 = new OleDbDataAdapter("SELECT KundeId, Navn, Adresse, Postnr, Byen,
Telefonnr, Mobilnr, EmailAdr, Noter FROM Kunder", cn);

da1.TableMappings.Add("Table", "Kunder");

da1.Fill(ds);

// Fill the Dataset with Faktura, map Default Tablename

// "Table" to "Faktura". ORDER BY FakturaID DESC

da2 = new OleDbDataAdapter("SELECT FakturaID, KundeID, Dato, BetalingsDato,
Betalt FROM Faktura ORDER BY FakturaID DESC", cn);

da2.TableMappings.Add("Table", "Faktura");

da2.Fill(ds);

// Establish the Relationship "RelOrdDet"

// between Kunder ---< [Faktura]

System.Data.DataRelation relOrdDet;

System.Data.DataColumn colMaster2;

System.Data.DataColumn colDetail2;

colMaster2 = ds.Tables["Kunder"].Columns["KundeId"];

colDetail2 = ds.Tables["Faktura"].Columns["KundeID"];

relOrdDet = new System.Data.DataRelation("RelOrdDet", colMaster2,
colDetail2);

ds.Relations.Add(relOrdDet);

// The DataViewManager returned by the DefaultViewManager

// property allows you to create custom settings for each

// DataTable in the DataSet.

dsView = ds.DefaultViewManager;

// Databinding for the Grid's

dgrKunder.DataSource = dsView;

dgrKunder.DataMember = "Kunder";

dgrFaktura.DataSource = dsView;

dgrFaktura.DataMember = "Kunder.RelOrdDet";

}

Kind regards,
simsen Smile | :)

Christian Graus23-Jul-06 10:45

23-Jul-06 10:45

I don't understand the question. Why do you need intellisense ? If you've passed the ID, you can request the data from the database, surely ? Otherwise, communication between forms typically happens with delegates, or is this ASP.NET ?

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

simsen23-Jul-06 20:00

23-Jul-06 20:00

It isn't ASP.NET.

I have to pass the Id to another form.

Normally I would do it this way: I drag and drop a datagridview (AND use the Visual Studios wizard to make the connection and so on) into form1 and then I use the below code1 on a button, to pass the id with it.

But my problem is (I'm a very newbee), I tried instead of using the wizard to make my own connection to the database and put data into the datagridview. See code2.

Now I don't know what I shall do, to pass the id over to form2. On form2 I have som fields, which i also get from the database - but I cann't get them, don't have have the id.

Kind regards,
simsen Smile | :)

Code1:
System.Data.DataRowView SelectedRowView;

fakturasystemDataSet.FakturaRow SelectedRow;

SelectedRowView = (System.Data.DataRowView)fakturaBindingSource.Current;

SelectedRow = (fakturasystemDataSet.FakturaRow)SelectedRowView.Row;

FakturaVis FakturaVisForm = new FakturaVis();

FakturaVisForm.LoadFakturaVis(SelectedRow.FakturaID);

FakturaVisForm.Show();

Code2
private void loadKundeFaktura()

{

//create a connection string to the access database

OleDbConnection cn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;

User Id=password=;

Data Source=" + myDB);

// Create the DataSet

ds = new DataSet("KundeFaktura");

// Fill the Dataset with Kunder, map Default Tablename

// "Table" to "Kunder".

da1 = new OleDbDataAdapter("SELECT KundeId, Navn, Adresse, Postnr, Byen,
Telefonnr, Mobilnr, EmailAdr, Noter FROM Kunder", cn);

da1.TableMappings.Add("Table", "Kunder");

da1.Fill(ds);

// Fill the Dataset with Faktura, map Default Tablename

// "Table" to "Faktura". ORDER BY FakturaID DESC

da2 = new OleDbDataAdapter("SELECT FakturaID, KundeID, Dato, BetalingsDato,
Betalt FROM Faktura ORDER BY FakturaID DESC", cn);

da2.TableMappings.Add("Table", "Faktura");

da2.Fill(ds);

// Establish the Relationship "RelOrdDet"

// between Kunder ---< [Faktura]

System.Data.DataRelation relOrdDet;

System.Data.DataColumn colMaster2;

System.Data.DataColumn colDetail2;

colMaster2 = ds.Tables["Kunder"].Columns["KundeId"];

colDetail2 = ds.Tables["Faktura"].Columns["KundeID"];

relOrdDet = new System.Data.DataRelation("RelOrdDet", colMaster2,
colDetail2);

ds.Relations.Add(relOrdDet);

// The DataViewManager returned by the DefaultViewManager

// property allows you to create custom settings for each

// DataTable in the DataSet.

dsView = ds.DefaultViewManager;

// Databinding for the Grid's

dgrKunder.DataSource = dsView;

dgrKunder.DataMember = "Kunder";

dgrFaktura.DataSource = dsView;

dgrFaktura.DataMember = "Kunder.RelOrdDet";

}

Christian Graus23-Jul-06 21:11

23-Jul-06 21:11

How does form2 get created ? Surely it's from form1, in which case you can pass the ID through the constructor ?

The problem with all the wizard garbage in .NET 2.0 is that you can get so far, then you hit a brick wall and realise you do need to learn all the stuff the framework has been taking care of for you.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

simsen24-Jul-06 1:23

24-Jul-06 1:23

Hi Christian

First thanks for helping me. I'm totally lost here, and I don't know what to do.

Yes I found out, I couldn't use the wizard to do the things I will. So no I'm leaning myself the hard way, by trying to make a program for my friend.

I think I use a constructer (if I understand the book I use correctly which means a constructor is when I make a "new" statement). See the below code.

I have to problems. I don't know how to get the Id from the datagridview I stand on. And then to pass that with the constructer.

If you want to see all the code etc, you can get it here: http://www.ansi-design.dk/ANSI.zip[^]

The button (constructer) I use to open the form2 with code:

private void btnFakturaVis_Click(object sender, EventArgs e)<br />
            {<br />
                //The below code I used, when I had only one datagridview and used the wizard<br />
                //System.Data.DataRowView SelectedRowView;<br />
                //fakturasystemDataSet.FakturaRow SelectedRow;<br />
 <br />
                //SelectedRowView = (System.Data.DataRowView)fakturaBindingSource.Current;<br />
                //SelectedRow = (fakturasystemDataSet.FakturaRow)SelectedRowView.Row;<br />
                //FakturaVis FakturaVisForm = new FakturaVis();<br />
                //FakturaVisForm.LoadFakturaVis(SelectedRow.FakturaID);<br />
                //FakturaVisForm.Show();<br />
<br />
<br />
                //This code I initialize the FakturaVisForm with<br />
                //I here miss how to get the FakturaId from grdFaktura - dataset (ds) <br />
                //dataadapter (da2)<br />
                FakturaVis FakturaVisForm = new FakturaVis();<br />
                FakturaVisForm.Show();<br />
            }

Christian Graus24-Jul-06 10:19

24-Jul-06 10:19

Ah... OK.

Now, any class has a constuctor which is auto generated and takes no parameters. To pass parameters, you need to write another constructor. So, you have this

class FakturaVis
{
public FakturaVis ()
{
}
}

That's a class with an empty constructor. This may not even be in your code, if it's not, it gets inserterted. If you want to force people to pass an int value over, do this:

class FakturaVis
{
private int ID;
private FakturaVis ()
{
}

public FakturaVis (int ID)
{
this.ID = ID;
}
}

The name you pass in does not have to be the same as the one you store, but if it is, this will allow you to scope it properly. I've made the default constructor private, as I can't stop it being generated, private stops it being used. Then I've added a constructor which I can pass the ID in to. Now when you call new, you need to pass that ID, and you now have it within your new class instance.

To get the ID, I assume you're responding to a row being selected, the datagrid will have a selected row property, and then you can access the columns by index or name.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

simsen24-Jul-06 10:43

24-Jul-06 10:43

Thank you very very much. That was exactly what I needed. Now I can pass my id to form2. And thank you for having the patient with a newbee like me, who doesn't know the correct way to explain myself.

Kind regards,
simsen Smile | :)

Christian Graus24-Jul-06 10:46