Validation - C# Discussion Boards

I think I'll stick to Windows MFC
Thanks

I think that is a sensible decision for now Laugh | :laugh:

. However, I would say that given your experience of C++/MFC you may find C# and .NET not too difficult to learn. I started with C# by working through .NET Book Zero by Charles Petzold[^], which lays everything out in clear and concise terms.

techniques of cracking password using c# ?

No.

The difficult we do right away...
...the impossible takes slightly longer.

We do not condone, support or assist in the production of malicious code in any way, form or manner. This is a professional site for professional developers.

If you want to know how to create such things, you need to visit a hacking site: but be sure to disable all firewalls and antivirus products first or they won't trust you enough to tell you.

Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

I flagged you as a troll.

A guide to posting questions on CodeProject

Click this: Asking questions is a skill.
Seriously, do it.

Dave Kreskowiak

Write a console application that prompts you to enter a password. Copy the entry to the clipboard then paste it into the password box.

This space for rent

Uhhhh.... yeah. You might want to remove your garbage post.

If you're trying to show someone how to do some kind of validation, you're post is completely unreadable and inappropriate. Write an article or tip/trick on it and EXPLAIN WHAT YOU'RE DOING!

If you're trying to ask a question, all you did was post a code dump with no explanation of a problem at all.

Either way, there's nothing anything can do to help until you start explaining what you're intention is with this post.

A guide to posting questions on CodeProject

Click this: Asking questions is a skill.
Seriously, do it.

Dave Kreskowiak

Can you not tell the difference between C# and JavaScript?

This space for rent

I have a mainform (MDI form) and I have another form (Form1) that includes a picturebox and I draw some lines that change acording to my parameters on it. Then I try to open it as mdichild form. However, I obtain the same drawn lines for every child form, How can I get different instance form in for loop?

I wrote this code main form (MDI parent form) (C# Windows Forms Application)

for (int i = 0; i <= 10; i++)
{
Form1 diagram = new Form1(Group, Paradigm, Method, stimChoise, frequncyChoise);
diagram.MdiParent = this;
diagram.Show();
}

In Form 1, I wrote these
public Form1(string group, string paradigm, string method, string stimChoise, string frequncyChoise)
{
InitializeComponent();
showDiagrams(group, paradigm, method, stimChoise, frequncyChoise);
//this function calls pictureBox1.Paint event that draw lines somewhere
}
Thanks in advance!

modified 12-Mar-16 6:19am.

Where is the code that draws on the 11 child forms?

thanks for your quick response, sorry for my inadequate question, I refreshed it

guest80 wrote:
I draw some lines that change acording to my parameters on it

Your code doesn't show any parameters for Form1 which could influence the drawing of the lines. You probably want to pass those as arguments to the constructor of Form1 (for which of course you would have to change the constructor signature accordingly first).

If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

thanks for your quick response, sorry for my inadequate question, I refreshed it

Where do you create the Image that you show in the PictureBox?

While your updated source shows arguments to the constructor of Form1 it appears that all instances of Form1 are created with the same argument-values.

If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

Actually In Form1, I drag and drop a picturebox on form and assign an image from property window, the picture always will the same, but lines on it (I use picturebox_Paint event) will be different according to parameters(group, paradigm etc)

this is full code in mainform (MDI form) (the class structure a little bit complicated so I tried to ask my question simple form but I couldn't). I am new in programming so sorry for this.

C#

private void treeView2_NodeMouseDoubleClick(object sender, TreeNodeMouseClickEventArgs e)
        {

            for (int i = 0; i <= ClairBLL.Classes.LoadNodes.groupNames.Length - 1; i++)
            {
                for (int y = 0; y <= ClairBLL.Classes.LoadNodes.paradigmNames.Length - 1; y++)
                {
                    for (int m = 0; m <= ClairBLL.Classes.LoadNodes.methodNames.Length - 1; m++)
                    {
                        for (int f = 0; f <= ClairBLL.Classes.LoadNodes.frequencyNames.Length - 1; f++)
                        {
                            if (treeView2.Nodes[i].Nodes[y].Nodes[0].Nodes[m].Nodes[f].IsSelected == true)
                            {
                                Group = treeView2.Nodes[i].Text;
                                Paradigm = treeView2.Nodes[i].Nodes[y].Text;
                                stimChoise = treeView2.Nodes[i].Nodes[y].Nodes[0].Text;
                                Method = treeView2.Nodes[i].Nodes[y].Nodes[0].Nodes[m].Text;
                                frequncyChoise = treeView2.Nodes[i].Nodes[y].Nodes[0].Nodes[m].Nodes[f].Text;

                                Form1 diagram = new Form1(Group, Paradigm, Method, stimChoise, frequncyChoise);

                                diagram.MdiParent = this;
                                diagram.Show();
                            }
                        }
                    }
                }
            }
        }

No worries Smile | :)

I guess OriginalGriff hit the spot then with the Image instance being/having been shared among your Form1 instances.

If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson

Copy the image, so that all the children aren't referring to the same one.
If each child creates it's own copy of the image and loads it into the picturebox, then the images are separate. If they all refer to the same image, then any change to one of them changes the image in them all.
And this does not copy the image:

C#

Image image = myPictureBox.Image;
Image otherImage = image;
myOtherPictureBox.Image = otherImage;

All it copies is a reference to the same image, in the same way that if you and your girlfriend share a car, you can refer to it as "my car", "her car", or "our car" - three separate references to the same physical vehicle.
To copy an image, you need to copy the underlying bitmap image data, so use the Image.Clone Method (System.Drawing)[^]

[edit]Typos... Sigh | :sigh:

[/edit]

Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...

modified 12-Mar-16 10:04am.

Okay, I will try this way. I hope it works in this time, Thanks for your advice!

Guys, I am working in C# Project to provide an security to computer/laptop using bluetooth.
I need to enlist the active bluetooth devices nearby your laptop.... I am unable to code it.
Would anyone please help me to with the coding?

(Note: I am able to list all the bluetooth devices that is active devices & the devices that has already been paired to your laptop, but i am unable to differentiate active bluetooth devices)

Hi people! Do you know how to use portuguese narrator in C#?
Smile | :)

Member 12386471 wrote:
how to use portuguese narrator

What is it?

any body can help me to make a program using windows Form Application Visual C# ?
Description: I want to hide the secret message into audio file(wav), but before the plaintext inserted into audio ,encrypt/decrypt the plaintext using RSA Algorithm and after that the chipertext inserted into audio using modification LSB phase coding technique.

please help me Cry | :((

You say you need help and what you want to do but you don't say what kind of help you need.

Did you take a look at the plethora of articles on steganography and encryption on CodeProject?

If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson