C# Discussion Boards - CodeProject

1-Jun-09 12:22

The link in my sig has all the information you need.

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

pda automata

chavir1-Jun-09 11:57

chavir

1-Jun-09 11:57

hi please help me
how to write a program "visual pda(push down automata) creater" with C#

cxg

Pete O'Hanlon1-Jun-09 12:07

Pete O'Hanlon

1-Jun-09 12:07

Well, this[^] is a good start for you, or were you expecting code?

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

chavir1-Jun-09 12:54

chavir

1-Jun-09 12:54

i want write a program to able user to create a push down automata (graphical)and see result with c#

cxg

Christian Graus1-Jun-09 12:59

1-Jun-09 12:59

Did you read the link in my sig ?

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

Pete O'Hanlon1-Jun-09 21:42

Pete O'Hanlon

1-Jun-09 21:42

Excellent, and the link I provided is chock full of information. All you need to do now is convert the maths into code.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

Panorama1416-Jan-10 22:11

Panorama14

16-Jan-10 22:11

hi,could u find it.plz i want this too.plz Confused | :confused:

Christian Graus1-Jun-09 12:23

Creating a Panel from with in a class

1-Jun-09 12:23

Why did you ask twice ?

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

Gary Strunk1-Jun-09 11:51

Gary Strunk

1-Jun-09 11:51

I have a project where I have a lot of panels on my form. It gets to be a hassel moving them front/back to edit them. Is there a way to encase the panel in a class, so I can just make it visible or invisible from class calls and not have to have it cluttering up my form during normal editing.

For example, I have a color picker panel which includes a listbox of all the color names and a picture box that I use to display the color and its name (using graphics). I can see where I could use this in several projects and don't want to have to recreate it everytime.

Gary Strunk

Re: Creating a Panel from with in a class

Luc Pattyn1-Jun-09 12:19

Re: Creating a Panel from with in a class

1-Jun-09 12:19

Hi,

you could create a class as in public class MyPanel : Panel {...} by creatind a code file; such Control would, after one build, be available for use by Visual Designer through the Toolbox, without residing in a separate DLL file.

or you could create a UserControl in a separate DLL file, as in public class MyPanel : UserControl {...}; that way you can include the same DLL in other projects, and you can set its properties through Visual Designer when including it in say another Form.

Smile | :)

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Satish Pai1-Jun-09 18:19

Satish Pai

1-Jun-09 18:19

Hi

you create a Usercontrol & insert all the panel u need. So that U can use it anywhere without recreating it.

Drop Down List Issue

sebogawa1-Jun-09 11:47

sebogawa

1-Jun-09 11:47

I have part of my app which enumerates all video camera devices present and presents them in a drop down list. I have two Logitech web cams which have the same name, but when I click on the drop down button, only one of the cameras are listed. How do I make it so that both are displayed? If possible, how can I add a number or ideally a port number to differentiate the two instances of the web cams?

This is my code:

<pre>
   public MainForm()
            {

                  InitializeComponent();

                  // collect cameras list

                  try
                  {
                        // enumerate video devices
                        videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

                        if (videoDevices.Count == 0)
                              throw new ApplicationException();

                        // add all devices to combo
                        foreach (FilterInfo device in videoDevices)
                        {

                              camerasComboLeft.Items.Add(device.Name);
                              camerasComboRight.Items.Add(device.Name);
                        }

                        camerasComboLeft.SelectedIndex = 0;
                        camerasComboRight.SelectedIndex = 0;
                  }

                  catch (ApplicationException)
                  {

                        camerasComboLeft.Items.Add("You ain't got no LEFT CAMERA son!");
                        camerasComboRight.Items.Add("You ain't got no RIGHT CAMERA son!");

                        videoDevices = null;

                  }

                  EnableConnectionControls(false);

            }

            .... rest of the app

</pre>

Re: Drop Down List Issue

Christian Graus1-Jun-09 12:24

1-Jun-09 12:24

I guess you need to check if the name is already in the list, and if so, append a number to the name. In that instance, I am assuming you need to add the FilterInfo to the combo box, and set the DisplayMember to be the Name property, otherwise, how do you tell which is which, if not by name ?

Christian Graus

Driven to the arms of OSX by Vista.

Please read this[^] if you don't like the answer I gave to your question.

1-Jun-09 11:29

1-Jun-09 11:29

Message Removed

Luc Pattyn1-Jun-09 11:34

1-Jun-09 11:34

What you could do is check the documentation and watch for some OpenFileDialog Properties; I bet some of them even have "Directory" in their name.

Smile | :)

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1-Jun-09 11:47

1-Jun-09 11:47

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Luc Pattyn1-Jun-09 11:56

1-Jun-09 11:56

Collin Jasnoch wrote:
What documentation?

You are using OpenFileDialog and having some trouble with it, hence read its documentation. It is all in there, Google if you don't know where to find it, then read the page and learn.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

2-Jun-09 3:10

2-Jun-09 3:10

Message Removed

Luc Pattyn2-Jun-09 3:49

2-Jun-09 3:49

Yeah, you confused me there. If you are not using OpenFileDialog, then read up on the documentation of the code you are using or contact its provider. Chances are they intended to mimick OpenFileDialog though.

When a relative path (or just a file name) is specified, .NET (and Windows) will rely on the "Current Directory" which by default starts out to be the folder holding your EXE file; however there are many ways to change it on the go (and even at app start), so it is not a recommended way of doing things.

Better set things explicitly; also have a look at the "special folders", see Environment.GetFolderPath()
with SpecialFolder.ApplicationData and CommonApplicationData (you should use a folder hierarchy in there, based on your company name and/or product name).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

2-Jun-09 3:56

2-Jun-09 3:56

Message Removed

Luc Pattyn2-Jun-09 4:01