Re: how to make global variables which could be accessable in all the project c# - C# Discussion Boards

Kythen10-Jul-08 4:39

10-Jul-08 4:39

Ranger49 wrote:
I think my error message was caused by the fact that I didn't know how many 'A's fit into a short type number.

Don't forget to pay attention to whether that short number is signed or unsigned!

 short a = 0x7AAA; // OK!
 short b = 0xAAAA; // Doh!  Won't work!
ushort c = 0xAAAA; // OK!

You can also use the 'unchecked' syntax to force it to be a signed short.

short x = unchecked((short)0xAAAA);  // Also OK!

help need in freqency matching using c#

theredonion10-Jul-08 1:41

theredonion

10-Jul-08 1:41

hello freinds i need guide how can we calculate frequency of audio inn from computer or of mic using c# i need good example code but simple one to learn how i can get or read the frequency of audio in computer n how can i match 2 frequncies thx in advance

its me yami
now cheers

Query Regarding PDA?

Tridip Bhattacharjee10-Jul-08 1:41

Tridip Bhattacharjee

10-Jul-08 1:41

i have never develop any application using c# which will run on PDA device.
so before developing any apps for PDA please some one help me with few urls from where i can gather the knowledge that how to develop database apps for pda. because i dont know which files need to be installed as .net runtime on pda and how to move and run apps from pda and how to work with database apps in pda and where to copy the database. basically i need many basic knowledge for developing apps which will run on pda. so please give me some urls who provide video based tutorial and step-by-step guidance that how to develop a apps for pda from the scratch. thanks.

tbhattacharjee

how to make global variables which could be accessable in all the project c#

theredonion10-Jul-08 1:38

theredonion

10-Jul-08 1:38

hello i need to know how can i make such kind of varibale which should be available in whole project of c# desktop application like if we make some variable in some from then it just available in that form if you dispose that form then it not goana accessable i need to know how to make some variable global for all the application forms so you just type there name and get there value thx

its me yami
now cheers

Re: how to make global variables which could be accessable in all the project c#

DaveyM6910-Jul-08 2:02

DaveyM69

10-Jul-08 2:02

Create a static class within the project's root namespace and create static variables in there.

Dave

Re: how to make global variables which could be accessable in all the project c#

c242310-Jul-08 3:16

c2423

10-Jul-08 3:16

You can make it public static inside the form, you could create a static class and put it in there, or you could use the singleton pattern. However, I would suggest that you first check that it actually needs to be stored like this rather then passed around as a parameter.

Hope this helps,
Chris

Re: how to make global variables which could be accessable in all the project c#

PIEBALDconsult10-Jul-08 4:05

PIEBALDconsult

10-Jul-08 4:05

Or perhaps a public constant.
Public enumerations are also very good.

Re: how to make global variables which could be accessable in all the project c#

RK KL10-Jul-08 5:22

RK KL

10-Jul-08 5:22

I use like the following...

    public static class GlobalInfo
    {
        public struct Diary
        {
            public struct Status
            {
                public const string Active = "Active";
                public const string Closed = "Closed";
...

The above works with enum too.

problem in gridview

Mogaambo10-Jul-08 0:52

Mogaambo

10-Jul-08 0:52

Hi ,
I have added 2 columns, 1 of type checkbox and 1 of type textbox
but i do not want anyone to edit the text in the cell but he can check any row, how can i achieve that.

Re: problem in gridview

dan!sh 10-Jul-08 1:17

dan!sh

10-Jul-08 1:17

just make the column readonly.

WCF and Mtom

Simon Lime10-Jul-08 0:19

Simon Lime

10-Jul-08 0:19

I am consuming a secure java webservice over https from an Excel Office add-in.

I am having problems with a method which both uploads and downloads a file. My binding looks like this:-
<binding name="uploadServiceHttpBinding" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
maxBufferSize="67108864" maxBufferPoolSize="524288" maxReceivedMessageSize="67108864"
messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
useDefaultWebProxy="true">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<security mode="TransportWithMessageCredential">
' <transport clientCredentialType="None" proxyCredentialType="None"
realm="" />
<message clientCredentialType="UserName" algorithmSuite="Default" />
</security>

And the method signature like this:-
public byte[] uploadFromOffice(byte[] fileBytes, String fileName, Long folderId)

When I run the upload succeeds however c# does not like the response, I get the following error:-
There was a communication problem. The content type multipart/related; type="application/xop+xml";
start="<soap.xml@xfire.codehaus.org>"; start-info="text/xml"; boundary="----=_Part_8_23410216.1215684578307" of the response message
does not match the content type of the binding (text/xml; charset=utf-8).

I have been told that the web service is Mtom enabled. When I change my message encoding in my binding to be messageEncoding="Mtom" the server does not like the request and I get this error:-
'There was a communication problem. Could not find the attachment cid:http%3A%2F%2Ftempuri.org%2F1%2F633512846834593677'

Does anyone have any suggestions on where I am going wrong, or how to set about debugging this?

why my program breaks?

George_George9-Jul-08 23:55

George_George

9-Jul-08 23:55

Hello everyone,

My operation is like this, I am using WinDbg to set a breakpoint to method foo. Here is what I did.

0:000> !bpmd TestDebug.exe TestDebug.Program.foo
Adding pending breakpoints...
0:000> lm
start             end                 module name
00000000`00400000 00000000`00408000   TestDebug C (private pdb symbols)  D:\Visual Studio 2008\Projects\TestDebug\TestDebug\bin\Debug\TestDebug.pdb

0:000> g
(1b0.5c4): CLR exception - code e0434f4d (first chance)
(1b0.5c4): CLR exception - code e0434f4d (!!! second chance !!!)
KERNEL32!RaiseException+0x5c:
00000000`77d4dd10 4881c4c8000000  add     rsp,0C8h
 
But when pressing g, and the program stops, then I pressed k to display the current stack. I found there is no my code in the stack. The seems the stop execution is not because of breakpoint (because no break point  hit information)? I am so confused. Any ideas?
 
namespace TestDebug
{
    class Program
    {
        static void foo()
        {
            int a = 100;
            throw new Exception ("Hello Exception Debug");
        }
        
        static void Main(string[] args)
        {
            foo();
        }
    }
}

thanks in advance,
George

Re: why my program breaks?

Thomas Stockwell10-Jul-08 4:55

Thomas Stockwell

10-Jul-08 4:55

Why don't you set breakpoints through VS IDE?

Regards,
Thomas Stockwell

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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Re: why my program breaks?

George_George10-Jul-08 16:03

George_George

10-Jul-08 16:03

Thanks Thomas,

I am just trying new things. Any ideas?

regards,
George

MDIChild FormBorderStyle.None

Cristina Afonso9-Jul-08 23:33

Cristina Afonso

9-Jul-08 23:33

Hi,

I have a project done in c# VS2003. And i need to change the layout, but i have a problem, i don't know how to solve it!

I have a form (the parent) with the FormBorderStyle property set to FormBorderStyle.None. When i try to open the MDI Child forms with the same property set to FormBorderStyle.None the behavior is different. The border and the title bar appear briefly (like a flash)and then the form is correctly displayed.

How i can solve this problem?

Thanks!

MDI problem

Yulianto.9-Jul-08 23:15

Yulianto.

9-Jul-08 23:15

I'm using form with IsMdiContainer set to True. I then create and show form, but I did not set the form.MdiParent to the Mdi container form. How can I retrieve all forms which I previously created?

<italic>Don't work hard, but work effectively.
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Do you know which event fire ?

banker_kiran9-Jul-08 23:04

banker_kiran

9-Jul-08 23:04

Hi...

When i click on IE's Title bar and move it. Then which event will be fired.

And how to handle this event in c#.

Kiran Banker

How to store connection string in global.asax file and web.config file using c#

sacr839-Jul-08 22:50

sacr83

9-Jul-08 22:50

1) How to store "connection string" in global.asax file and web.config file using c#?

2) How to get that "connection string" from web.config file and global.asax file to My web application?

3)Where i have to call that connection string on My web application and how i call to that connection from My web application..?

CheeN

MaskedTextBox Time Validation in Visual C#.Net

somagunasekaran9-Jul-08 21:33

somagunasekaran

9-Jul-08 21:33

Hi

Iam using Masked Textbox for Time format 24 Hours and Minuts 60 Seconds 60 I need a Time Format Valdation.please some examples.

somasundaram

How to pass value from thread to GUI in C#

Susanmat9-Jul-08 21:32

Susanmat

9-Jul-08 21:32

Hi,
I have a Socket Class which connects, accepts the multiple clients and receive data from each client. I'm using a thread to accept the connection. I have to pass the IpAddresses and status to the GUI for display. How do I pass the value from thread to GUI? How do I user SendMessage/PostMessage method? Can I use the Invoke method. Please explain.

Thanks in advance

Re: How to pass value from thread to GUI in C#

N a v a n e e t h9-Jul-08 22:38

N a v a n e e t h

9-Jul-08 22:38

Cross thread GUI updation is not allowed. You need to use the invoke method.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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Re: How to pass value from thread to GUI in C#

Susanmat9-Jul-08 22:57

Susanmat

9-Jul-08 22:57

Can you show me a sample code how to use Invoke method ?

Re: How to pass value from thread to GUI in C#

Daniel Grunwald9-Jul-08 23:22

Daniel Grunwald

9-Jul-08 23:22

string newText = ...;
form.Invoke(new MethodInvoker(delegate {
textBox.Text = newText;
}));

Re: How to pass value from thread to GUI in C#

Susanmat10-Jul-08 0:26

Susanmat

10-Jul-08 0:26

The code should be put in the thread or in the form?

Re: How to pass value from thread to GUI in C#

N a v a n e e t h10-Jul-08 1:43

N a v a n e e t h

10-Jul-08 1:43

Susanmat wrote:
The code should be put in the thread or in the form?

It should be in the method which updates GUI. See the following sample

void WorkerMethod() {
    if(this.InvokeRequired)
       this.Invoke(new MethodInvoker(UpdateGUI));
}

void UpdateGUI() {
  // do GUI updation here
}

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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