Re: cs project to Linux - C# Discussion Boards

Re: Is it possible to close a form that calls event to another form and while the event is being handled !!!.

Nadia Monalisa5-Sep-06 10:23

Nadia Monalisa

5-Sep-06 10:23

Hi Jun,
I got it from your clue..
Thank you very much for giving me the clue exactly in the right manner. Smile | :)

Regards

process.StartInfo

Bharat Gadhia5-Sep-06 8:20

Bharat Gadhia

5-Sep-06 8:20

I am trying ot run this programm from a windows form application but at command line it stops with message:

"Reading passphrase from file descriptor 0 ..." and nothing happens.

Same program run fine on command line with follwoing line:

C:\Program Files\GNU\GnuPG>gpg --passphrase-fd 0 < c:\gnupg\passphrase.txt -o c:\HIF\Clock.swf -d c:\gnupg\Clock.gpg

This is a command to decrypt the file using GnuPG encryption and decryption program.

Any help is most welcome.

Code Snippet:

string strArg = @" --passphrase-fd 0 < c:\gnupg\passphrase.txt -o c:\HIF\Clock.swf -d c:\gnupg\abc.gpg";
process.StartInfo.FileName = @"C:\Program Files\GNU\GnuPG\gpg"; OR "gpg"
process.StartInfo.Arguments = strArg;
process.StartInfo.RedirectStandardInput = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.UseShellExecute = false;
try
{
process.Start();
process.WaitForExit(5000);
string str = process.StandardOutput.ReadToEnd();
}
catch(Exception ex)
{
string str = ex.Source + ex.Message + ex.StackTrace;
}

Bharat Gadhia

In life, failures teach you as much as — or perhaps more than — successes.
Thank you very much for the help.

Re: process.StartInfo

Not Active5-Sep-06 8:53

Not Active

5-Sep-06 8:53

process.WaitForExit(5000);

The first question I would have is, is this enough time for the process to complete? Have you tried to increase the timeout, or not use it at all?

only two letters away from being an asset

Re: process.StartInfo

Bharat Gadhia5-Sep-06 9:15

Bharat Gadhia

5-Sep-06 9:15

Thank you.
yes I have done that too. I increased time to 40000 but after process exits the cmd screen still shows

Reading passphrase from file descriptor 0 ...

and it waits there till one hits manually enter button and then it comes out and at

string str = process.StandardOutput.ReadToEnd();

value of str string is empty.

So it seems that same command which reads passphrase.txt and passes to passphrase in command line operation does not do the same in windows form application.
By the way there was a small mistake in strArg value, It is as follows:

string strArg = @" --passphrase-fd 0 < c:\gnupg\passphrase.txt -o c:\HIF\Clock.swf -d c:\gnupg\Clock.gpg";

Bharat.

In life, failures teach you as much as — or perhaps more than — successes.
Thank you very much for the help.

Re: process.StartInfo

Not Active5-Sep-06 9:28

Not Active

5-Sep-06 9:28

Try reversing the calls

string str = process.StandardOutput.ReadToEnd();
process.WaitForExit(5000);

rather than

process.WaitForExit(5000);
string str = process.StandardOutput.ReadToEnd();

only two letters away from being an asset

Re: process.StartInfo

Bharat Gadhia5-Sep-06 9:39

Bharat Gadhia

5-Sep-06 9:39

Thank you.
I did that but the cmd screen waits with followong message at the call to the function process.StandardOutput.ReadToEnd()

Reading passphrase from file descriptor 0 ...

Bharat.

In life, failures teach you as much as — or perhaps more than — successes.
Thank you very much for the help.

cs project to Linux

Amar Chaudhary5-Sep-06 8:19

Amar Chaudhary

5-Sep-06 8:19

please tell me if there is a way to run my project in c#.net 2005 on Linux platform

i heard about grasshopper and mono

1--> which one is better

2--> what i should do to make that happen
(any intigration with visual studio.net or recompile the code)

Re: cs project to Linux

User 66585-Sep-06 8:25

User 6658

5-Sep-06 8:25

Use Mono

You can first try to compile it on both Windows and Linux. If it compiles and runs on Windows, check if it compiles and properly runs on Linux, too.
The mcs compiler is for .NET 1.1 and the gmcs for .NET 2.0 as far as I remember

regards

modified 12-Sep-18 21:01pm.

Re: cs project to Linux

Amar Chaudhary5-Sep-06 8:48

Amar Chaudhary

5-Sep-06 8:48

thanks Greeeg Smile | :)

you seem to have a better knowledge of the topic will you please mind to put some more information so that everybody reading this get the benefit Big Grin | :-D

Re: cs project to Linux

User 66585-Sep-06 8:54

User 6658

5-Sep-06 8:54

There are already some articles on this site that explain it very well. Just type "Mono" into the search box at the top. Smile | :)

Here are two vey good ones:
Number 1
Number 2

regards

modified 12-Sep-18 21:01pm.

Re: cs project to Linux

Amar Chaudhary5-Sep-06 9:01

Amar Chaudhary

5-Sep-06 9:01

Greeeg

Thank You

Help with GDI+

Fco. Javier Marin5-Sep-06 7:58

Fco. Javier Marin

5-Sep-06 7:58

Hello. Is there any way to read one by one the pixels that contains a Graphics class and know his color? And I can replace these color to other different?

Thanks.

Re: Help with GDI+

Jun Du5-Sep-06 8:08

Jun Du

5-Sep-06 8:08

Yes, Bitmap.GetPixel/SetPixel methods.

Best,
Jun

Re: Help with GDI+

Fco. Javier Marin5-Sep-06 8:17

Fco. Javier Marin

5-Sep-06 8:17

But how I can convert the Graphics class into a Bitmap class?

Re: Help with GDI+

User 66585-Sep-06 8:21

User 6658

5-Sep-06 8:21

A graphic doesn't contain any pixel information per se. It's a Brush, Image or Bitmap that holds some pixels

regards

modified 12-Sep-18 21:01pm.

Re: Help with GDI+

Fco. Javier Marin5-Sep-06 8:26

Fco. Javier Marin

5-Sep-06 8:26

Yes, I need to replace the white pixel that appears in a Graphics class of a Print event, and I can´t create a Bitmap class.

Re: Help with GDI+

Jun Du5-Sep-06 9:27

Jun Du

5-Sep-06 9:27

This is what I see could be done:

1) Create and maintain a Bitmap object as the drawing buffer (canvas)
2) Construct a Graphics object from the Bitmap (optional)
3) Use that Graphics object to draw to the Bitmap (optional)
4) Change the colors of pixels to the Bitmap
5) Finally, use the Graphics object from the PaintEventArgs to draw the Bitmap to the screen

Hope this helps.

Best,
Jun

Re: Help with GDI+

User 66585-Sep-06 8:13

User 6658

5-Sep-06 8:13

If you have a Bitmap-Object, then you can use GetPixel() and SetPixel().
But both are very slow if you plan to use it on many pixels.
Use LockBits() and UnlockBits instead.

regards

modified 12-Sep-18 21:01pm.

Re: Help with GDI+

Amar Chaudhary5-Sep-06 8:53

Amar Chaudhary

5-Sep-06 8:53

please go through articles posted by

'Andrew Kirillov'

they cover a whole lot of the things

Treeview and add node/refresh

Saamir5-Sep-06 7:45

Saamir

5-Sep-06 7:45

Hi guys,
I need some help please, I have a treeview with menu items where one of them opens an add form and allows the user to select a name. Once the name is selected and saved into the database, I would like to update/refresh the tree with the new node automatically on save.

Please help!

sasa

Re: Treeview and add node/refresh

User 66585-Sep-06 8:20

User 6658

5-Sep-06 8:20

SASA_1 wrote:
I would like to update/refresh the tree with the new node automatically on save.

You mean when your app starts it should restore the treeview?
You could additionaly save your username like that: users/admins/tony (depends on your structure of course)

You can then recursively call Node.Expand to restore your tree view.
Here's some sample code from a project I work on:

private void ExpandTree(string path)
        {
            path = path.Replace(@"\\", @"\");
            string[] paths = path.Split('\\');
            if (paths.Length > 0)
            {
                TreeNodeCollection currentNodePath = this.trTreeView.Nodes;
                TreeNode currentNode = currentNodePath[0];
                for (int i = 0; i < paths.Length; i++)
                {
                    foreach (TreeNode node in currentNodePath)
                    {
                        if (node.Text.ToLower() == paths[i].ToLower())
                            {
                                node.Expand();
                                currentNodePath = node.Nodes;
                                currentNode = node;
                                break;
                            }
                        }
                    }
                }
            }

You might need to modify it for you needs, though.

regards

modified 12-Sep-18 21:01pm.

Re: Treeview and add node/refresh

Saamir5-Sep-06 8:40

Saamir

5-Sep-06 8:40

Thank you for your suggestion but, my app does restore the treeview when I restart the app, I just want it to restore the treeview on every node added after it is started.

sasa

Re: Treeview and add node/refresh

Nader Elshehabi5-Sep-06 10:42

Nader Elshehabi

5-Sep-06 10:42

Hello

I don't seem to fully understand your problem. how do you populate your TreeView? I usually make a RefreshTree() that populates my TreeView, and call it each time a change happens. So refresh your TreeView just in the same manner you populate it the first time!!

Again I think I'm not aware of your true problem. Please post me more details on how you populate you TreeView, and if there is any Databinding involoved, or do you explicitly populate you TreeView from a DataSource without binding.

Regards

Compile Question

HahnTech5-Sep-06 6:06

HahnTech

5-Sep-06 6:06

How do you compile to a library in C#. or how can i bring a DLL into the final exe so I don't have to install the dll.

I have classes that i use often and don't like just copying the .cs into my project. I'd like a library to link from but don't know how to make it.

Thanks

Ronald Hahn, CNT - Computer Engineering Technologist

New Technologies Analyst

HahnTech Affiliated With Code Constructors
Edmonton, Alberta, Canada
Email: rhahn82@telus.net

Re: Compile Question

User 66585-Sep-06 6:17

User 6658

5-Sep-06 6:17

HahnTech wrote:
How do you compile to a library in C#

Create a class library project and just compile it Wink | ;)

HahnTech wrote:
or how can i bring a DLL into the final exe so I don't have to install the dll.

copy the code over from the DLL to your form.
This is ugly, the better way is:

HahnTech wrote:
I'd like a library to link from but don't know how to make it.

Add a reference to your DLL from your form.
In the solution explorer there a folder called "References". You can there rightclick, "Add Reference" -> "Browse" -> select your DLL

regards

modified 12-Sep-18 21:01pm.

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