Re: Transfering values (Global variable) - C# Discussion Boards

Re: how to add " to a string

Edmundisme20-Mar-07 12:17

Edmundisme

20-Mar-07 12:17

string noQuotes = "no quotes";
string hasQuotes = "\"has quotes\"";

Re: how to add " to a string

uowzd0120-Mar-07 12:19

uowzd01

20-Mar-07 12:19

Thank you so much for your help

For a further explanation

Ennis Ray Lynch, Jr.20-Mar-07 12:19

Ennis Ray Lynch, Jr.

20-Mar-07 12:19

When you create strings special characters require an escape sequence. Any unicode character can be escaped by using \u and the unicode value, \uFEFF is one I am using because of some pdf issue. Newlines are \n tabs are \t a \ is \\.

File Not Found

Transfering values (Global variable)

Muammar©20-Mar-07 11:21

Muammar©

20-Mar-07 11:21

Good evening everyone,
I have a feeling it's a silly question Unsure | :~

but how can you transfer a variable from one object to another without having to create another instance of these objects.. say I have two open forms and I want to pass a value entered in one form to the other one.

Thanks a million Rose | [Rose]

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Re: Transfering values (Global variable)

Wayne Phipps20-Mar-07 11:37

Wayne Phipps

20-Mar-07 11:37

If you decalre a member as public static, you don't need an instance to access it.

As an example, if you declared a string in class like this:

public sealed class MyGlobal
{
    public static string MyString = null;
}

You could access it from anywhare in your project like this:

MyGlobal.MyString = "hello";
MessageBox.Show( MainForm.MyString );

Hope this helps.

Regards

Wayne Phipps
____________

Time is the greatest teacher... unfortunately, it kills all of its students
View my Blog

Re: Transfering values (Global variable)

Muammar©20-Mar-07 22:06

Muammar©

20-Mar-07 22:06

IT WORKS!! Thanks a million Wayne Rose | [Rose]

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Re: Transfering values (Global variable) [modified]

Edmundisme20-Mar-07 12:32

Edmundisme

20-Mar-07 12:32

If the variable is a reference type, you won't be creating a new instance, you will simply be passing a reference to the existing object. If the variable is a value type, you can pass it as a reference:

...

int someVarIWantToPass = 0;
form2.PassVarByRef(ref someVarIWantToPass);

...

-- modified at 18:47 Tuesday 20th March, 2007

Re: Transfering values (Global variable)

Muammar©20-Mar-07 22:07

Muammar©

20-Mar-07 22:07

Thank you Edmundisme Rose | [Rose]

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

TcpChannel Remoting - Proxy Possible?

Kir Birger20-Mar-07 10:07

Kir Birger

20-Mar-07 10:07

I found a bit of code that allows you to add a webproxy to an HttpChannel
(http://dotnetjunkies.com/WebLog/chris.taylor/archive/2004/01/24/6050.aspx)

but even this approach would not work for TcpChannel. Is there some other way to implement a proxy functionality on a tcp channel?

Re: TcpChannel Remoting - Proxy Possible?

b0ksah20-Mar-07 11:14

b0ksah

20-Mar-07 11:14

Well, maybe you should look at custom sinks ... just an idea .. I'm not sure at all here WTF | :WTF:

Re: TcpChannel Remoting - Proxy Possible?

Kir Birger21-Mar-07 1:59

Kir Birger

21-Mar-07 1:59

I've used sinks, but to my knowledge the last sink on the client side is the Transport Sink, and that cannot be customized or overridden.

Concat

msogun20-Mar-07 9:47

msogun

20-Mar-07 9:47

Does anyone know how to concat on the displaymember of a combobox? I am trying to contatenate two fields together. Here is my code.

cboLocation.DataSource = ds;
cboLocation.DisplayMember = (string.Concat("Locations.LocationName", ' ', "Locations.LocationNo"));
cboLocation.ValueMember = "Locations.LocationNo";

When I did this, only the Locations.LocationNo shows. Need help.

Re: Concat

khanlodi20-Mar-07 9:54

khanlodi

20-Mar-07 9:54

what is your data source , if you are executing a query against a db , simply change your query to select Locations.LocationNo , (Location.LocationName + ' ' + Location.LocationNo) as LocationName from Locations

Taimur Khan

Re: Concat

msogun20-Mar-07 10:12

msogun

20-Mar-07 10:12

Thanks. It works.

ProgressBar Marquee does not scroll

F.E.L.I.X.20-Mar-07 9:38

F.E.L.I.X.

20-Mar-07 9:38

Thank you very much for reading and helping me.

I am now working with my degree final year project. I want to use a progress bar with style set to marquee to show a progress. However, I found that the progress bar does not scroll while I am running my project.

I have tested in a new project with only putting a progress bar with style marquee. It works smoothly. On the other hand, even if I new a form in my working project (the FYP one), and just putting a progress bar on it, it still cannot work. I also found that the appearance of the progress bar is flatten just like a disabled textbox.

May I know is there anything I have set it wrong?
I am new with C#. Thanks a lot for guiding me!

Re: ProgressBar Marquee does not scroll

Zoltan Balazs20-Mar-07 9:43

Zoltan Balazs

20-Mar-07 9:43

Post some sample of how you're trying to do it.

Network integrated solutions

Re: ProgressBar Marquee does not scroll

F.E.L.I.X.20-Mar-07 9:48

F.E.L.I.X.

20-Mar-07 9:48

Thank you Zoltan. I guess that I did not include EnableVisualStyles() before newing the form.

I tried this and the progress bar did run.

I wonder why it does not need to enable visual style if I put a progess bar with marquee as style in a brand new project. D'Oh! | :doh:

Re: ProgressBar Marquee does not scroll

Dave Kreskowiak20-Mar-07 12:29

Dave Kreskowiak

20-Mar-07 12:29

Because, by default, EnableVisualStyles is already turned on. Start a new Windows Forms project, then open the Program.cs file and you'll find it.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: ProgressBar Marquee does not scroll

F.E.L.I.X.20-Mar-07 18:28

F.E.L.I.X.

20-Mar-07 18:28

Thank you very much Dave~! Laugh | :laugh:

Seems that I have asked a stupid question. Sigh | :sigh:

change color of gif image

samreengr820-Mar-07 9:34

samreengr8

20-Mar-07 9:34

I want 2 change a particular color in gif image...... for example want to change the hair color according to user choice how I do dat Can any buddy give any idea......set pixel is very sklow anything else..........

Issues with "C# Ping"

Sean Wcisel20-Mar-07 9:11

Sean Wcisel

20-Mar-07 9:11

I've been trying to implement the code found here, and everything works like a charm as long as all the machines I'm checking are up, but the thing freezes if one or more of them is down. I ran through with the debugger, and it freezes while executing the line I marked in the code below:

<br />
.<br />
.<br />
.<br />
try<br />
{<br />
// Start timing<br />
start = Environment.TickCount;<br />
<br />
//send the Packet over the socket<br />
byteCount = socket.SendTo(sendBuffer, IcmpPacket.ICMP_PACKET_SIZE, SocketFlags.None, server);<br />
<br />
if (byteCount == SOCKET_ERROR)<br />
{<br />
result = PingResponseType.ConnectionError;<br />
response.ResponseTimes[i] = Constants.InvalidInt;<br />
}<br />
else<br />
						<br />
//ReceiveFrom will block while waiting for data (***the problem is on the next line***)<br />
byteCount = socket.ReceiveFrom(receiveBuffer, 256, SocketFlags.None, ref client); <br />
<br />
// stop timing<br />
stop = System.Environment.TickCount;<br />
.<br />
.<br />
.<br />

in Ping.cs.

Again, this problem occurs only when a machine is offline (I've been unplugging one of them from the network to test it). I don't get an error or timeout, like I should. The program simply freezes.

I know this error is pretty darn specific, but hopefully someone out there has had some experience with it. I'm willing to provide any other pertinent details as necessary.

Thanks,
Sean

string to pieces

marwan_siala20-Mar-07 8:01

marwan_siala

20-Mar-07 8:01

i have a string for example "i have a book".
i need to split it into many pieces and save it as an array string in condition that if a space found in the string split and save....
please help

thanks allot

Re: string to pieces

kozu20-Mar-07 8:09

kozu

20-Mar-07 8:09

string text = "i have a book";
string[] pieces = text.Split(' ');

Re: string to pieces

marwan_siala20-Mar-07 8:26

marwan_siala

20-Mar-07 8:26

thanks allot... Smile | :)

Dialog with ProgressBar & label not working correctly

kozu20-Mar-07 7:39

kozu

20-Mar-07 7:39

Hi,
I have a simple dialog box containing a ProgressBar and a label. I need to show progress for a lengthy operation with both a bar and some text.
I created a public method that takes care of incrementing the progress value, and setting the text for the label. When I run it though the bar shows the progress, but the label is all messed up (it doesn't update, and the dialog is all messed up where the label should be.)
I also tried setting the dialog's Text inside that method, but it's worse: after a few iterations the bar stops updating.
Has anyone seen this behavior? Is there anythign I can do?
thanx

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