C# Discussion Boards - CodeProject

Dave Kreskowiak5-Jun-09 9:56

5-Jun-09 9:56

You can't use more than one instance of a SoundPlayer and have them all playing at the same time. You'll have to use the MediaPlayer component to play the background sound and use the SoundPlayer to play your button click sounds.

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Sounds

DaveyM695-Jun-09 10:23

DaveyM69

5-Jun-09 10:23

I believe (from previous research a while ago) it can be done with DirectX. I've never attempted it so I can't offer any working samples/articles but adding that into your search terms may yield some useful results.

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

Re: Sounds

ARon_5-Jun-09 11:22

ARon_

5-Jun-09 11:22

You can use:
1) DirectX 9 Managed Wrapper which I understand to be obsolete

using Microsoft.DirectX.AudioVideoPlayback;
...
BackgroundMusic = new Audio(fileName, false);
BackgroundMusic.Play();

and

using Microsoft.DirectX.DirectSound;
...

public class Sound : IDisposable
{
private static Device SoundDevice;
private SecondaryBuffer MyBuffer;
...

public static void Initialize()
{
       SoundDevice = new Microsoft.DirectX.DirectSound.Device();
       SoundDevice.SetCooperativeLevel(Form.Handle, CooperativeLevel.Priority);
}
...
public Sound(string AudioFileName)
{
       BufferDescription desc = new BufferDescription();
       desc.Flags = BufferDescriptionFlags.ControlPan | BufferDescriptionFlags.ControlVolume |
                    BufferDescriptionFlags.ControlFrequency;
       MyBuffer = new SecondaryBuffer(AudioFileName, desc, SoundDevice);
}
...
MyBuffer.Play();

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2) OpenAL, I don't have an example but there are example in the Toa Framework[^]

ARon

RichTextBox does not have string property

paradisonoir5-Jun-09 8:39

paradisonoir

5-Jun-09 8:39

Hi,

I am trying to set/get the text of my RichTextBox, but Text is not among list of its properties when I want to get test.Text...

I am using code behind in C# (.net framework 3.5 SP1)

RichTextBox test = new RichTextBox();
cannot have test.Text(?)

Do you know how come it can be possible ?

thanks,

Re: RichTextBox does not have string property

Blue_Boy5-Jun-09 9:42

Blue_Boy

5-Jun-09 9:42

RichTextBox [^] dont have Text property?!

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Re: RichTextBox does not have string property

paradisonoir5-Jun-09 9:45

paradisonoir

5-Jun-09 9:45

There was a confusion between RichTextBox in System.Windows.Forms and in System.Windows.Control

I am using the one in the Control as I am using WPF. In there, there is no Text property, and in order to get a text, I should have used this line:

string myText = new TextRange(transcriberArea.Document.ContentStart, transcriberArea.Document.ContentEnd).Text;

thanks

SYSTEM RESTORE

rick05565-Jun-09 7:19

rick0556

5-Jun-09 7:19

WHY DOEST THIS WORK?

RegistryKey RegKeyWrite = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SystemRestore");
RegKeyWrite.OpenSubKey("DiskPercent");
RegKeyWrite.("DiskPercent",0);
RegKeyWrite.Close();

Re: SYSTEM RESTORE

EliottA5-Jun-09 7:27

EliottA

5-Jun-09 7:27

Maybe you don't have permission to edit the registry?

What is the exception being thrown?

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Re: SYSTEM RESTORE

rick05565-Jun-09 13:22

rick0556

5-Jun-09 13:22

Thank you for your Reply,
No exception is being thrown just trying to set a value to the registry
Guess I'll have to figure out how to give my program permission to set values in the registry
Regards
Rick

Re: SYSTEM RESTORE

I Believe In GOD5-Jun-09 7:29

I Believe In GOD

5-Jun-09 7:29

rick0557 wrote:
WHY DOEST THIS DIDN'T WORK?

Open regedit.exe
and check if the following reg key exist !

HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SystemRestore\\

and if it's not , then replace

OpenSubKey

with

CreateSubKey

P.S
Always use

CreateSubKey

it's try to open the key and if it's not exist then create it .

I know nothing , I know nothing ...

Re: SYSTEM RESTORE

0x3c05-Jun-09 8:02

0x3c0

5-Jun-09 8:02

rick0557 wrote:
RegKeyWrite.("DiskPercent",0);

You've not specified a method. SetValue may be relevant

rick0557 wrote:
RegKeyWrite.OpenSubKey("DiskPercent");

You should be assigning the result of this invocation to RegKeyWrite

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And the reality
Between the motion
And the act
Falls the Shadow

Re: SYSTEM RESTORE

Dave Kreskowiak5-Jun-09 9:51

Dave Kreskowiak

5-Jun-09 9:51

Registry KEYS are the folders you see in RegEdit.

Registry VALUES are the named items in the folders (Keys).

I think you're looking for something more like:

RegistryKey RegKeyWrite = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SystemRestore");
RegKeyWrite.SetValue("DiskPercent",0);
RegKeyWrite.Close();

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: SYSTEM RESTORE

rick05565-Jun-09 13:19

rick0556

5-Jun-09 13:19

Thank You for your answer
Tried it but that did change anything either.
Guess I'll have to give my program permission to set values in the registry
Regards
Rick

Re: SYSTEM RESTORE

Dave Kreskowiak5-Jun-09 17:25

Dave Kreskowiak

5-Jun-09 17:25

You don't give your "program" permissions to the registry. Your application runs as YOU, or the person or ID that launched it. If you don't have permissions to change that value, you have to use a higher level user account, like an Admin account.

If you're running the code under a normal user account, just about the entire HKEY_LOCAL_MACHINE hive is off-limits. If you're code is not just swallowing the exceptions, your code should have thrown an Access Denied error, or something very similar.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: SYSTEM RESTORE

rick05565-Jun-09 20:04

rick0556

5-Jun-09 20:04

Thank You for your reply,
Got it figured out. just one of those rookie mistakes.
your origional solution was right on the mark.
worked just fine once I got my head around it.
Regards
Rick

Parse out all the "{" + string + "}" occurences?

_iobuf5-Jun-09 6:35

_iobuf

5-Jun-09 6:35

Is there a way to iterate through a string of text and find each occurence of a string that contains a substring of "{" + (variable string) + "}" and replace it with a corresponding string defined in a dictionary (of which the key value is the "{" + (variable string) + "}" ??

Re: Parse out all the "{" + string + "}" occurences?

I Believe In GOD5-Jun-09 6:40

I Believe In GOD

5-Jun-09 6:40

string OldStr = "Application";
string NewStr = "Program";

            string str = @"Run the Application , Close the Application and  Delete the Application";
            str = str.Replace(OldStr, NewStr);

I know nothing , I know nothing ...

Re: Parse out all the "{" + string + "}" occurences?

_iobuf5-Jun-09 6:42

_iobuf

5-Jun-09 6:42

Thanks.. I used that in a loop and put all the key values as the string to be replaced

Re: Parse out all the "{" + string + "}" occurences?

MidwestLimey5-Jun-09 6:41

MidwestLimey

5-Jun-09 6:41

Yes.

I suppose you'll want a hint as to how! Smile | :)

If the string is formatted such that { and } only occur as a wrapper to a variable name then the easiest way I can think of is to run a regex on it, match all "\{[^\}]\}" and iterate through them.

If not you'll probably have to write a lexer of some kind.

10110011001111101010101000001000001101001010001010100000100000101000001000111100010110001011001011

Re: Parse out all the "{" + string + "}" occurences?

_iobuf5-Jun-09 6:44

_iobuf

5-Jun-09 6:44

This is a good solution too, thx

Re: Parse out all the "{" + string + "}" occurences?

Guffa5-Jun-09 10:43

Guffa

5-Jun-09 10:43

Given that you have the text in the text variable and the replacements in the replacements dictionary:

text = RegEx.Replace(text, @"\{(.+?)\}", m => replacements[m.Value]);

Despite everything, the person most likely to be fooling you next is yourself.

Talking to htpasswd.exe

Johan Martensson5-Jun-09 6:17

Johan Martensson

5-Jun-09 6:17

Can anyone see what I'm doing wrong here?
All I want to do is generate a password with htpasswd.exe and it looked
easy enough but it just gets stuck at ReadLine() Confused | :confused:

ProcessStartInfo ps = new ProcessStartInfo();
ps.FileName = Path.Combine(Application.StartupPath, "htpasswd.exe");
ps.Arguments = "-n test";
ps.CreateNoWindow = true;
ps.UseShellExecute = false;
ps.RedirectStandardInput = true;
ps.RedirectStandardOutput = true;
ps.RedirectStandardError = true;

Process proc = new Process();
proc.StartInfo = ps;
proc.Start();

proc.StandardInput.WriteLine("testing");
proc.StandardInput.WriteLine("testing");

string line = proc.StandardOutput.ReadLine();
			
proc.Close();

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Re: Talking to htpasswd.exe

Henry Minute5-Jun-09 10:21

Henry Minute

5-Jun-09 10:21

I know nothing about 'htpasswd', but generally a ReadLine() method expects a carriage return. Did you hit return?

Henry Minute

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Girl: (staring) "Why do you need an icy cucumber?"
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Re: Talking to htpasswd.exe

Johan Martensson5-Jun-09 11:39

Johan Martensson

5-Jun-09 11:39

The WriteLine adds a carriage return so that part is ok.
I found what I had missed, the command-prompt needed to
exit before it returned the result.

So adding this before reading the output solved it:

proc.StandardInput.WriteLine("exit");

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Re: Talking to htpasswd.exe

DaveyM695-Jun-09 11:19

DaveyM69

5-Jun-09 11:19

The exe basically generates md5 hashed passwords IIRC. That can be done in code without needing that exe. Search for MD5 c# and you'll find many results. Here are a couple:
http://www.spiration.co.uk/post/1203/MD5%20in%20C%23%20-%20works%20like%20php%20md5()%20example[^]
http://blogs.msdn.com/csharpfaq/archive/2006/10/09/How-do-I-calculate-a-MD5-hash-from-a-string_3F00_.aspx[^]

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