Hi there guys thanks for you help.

Basically I have created a c# form based rot13 encryption program. The problem I am having is implementing these into a class with methods which can be accessed from the from.

In the main from I have a textbox called message textbox
I have a button called open and decrypt, which uses file dialog to read in a text and decrypt it.

I have a save and encrypt which saved whatever the user enter into the text box and then allow the user to save it to a directory.

I have included the code as you guys will better undertsand this.

Main form code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace FinalAssignment
{
    public partial class Form1 : Form
    {
        public String Message;
        public TextBox MessageTexBox;
        EncryptionDecryption T = new EncryptionDecryption();

        public Form1()
        {
            InitializeComponent();


        }
               
        static class LetterShift
        {
            public static string Transform(string value)
            {
                
                char[] array = value.ToCharArray();
                for (int i = 0; i < array.Length; i++)
                {
                    int LetterNumber = (int)array[i];

                    if (LetterNumber >= 'a' && LetterNumber <= 'z')
                    {
                        if (LetterNumber > 'm')
                        {
                            LetterNumber -= 13;
                        }
                        else
                        {
                            LetterNumber += 13;
                        }
                    }
                    else if (LetterNumber >= 'A' && LetterNumber <= 'Z')
                    {
                        if (LetterNumber > 'M')
                        {
                            LetterNumber -= 13;
                        }
                        else
                        {
                            LetterNumber += 13;
                        }
                    }
                    array[i] = (char)LetterNumber;
                }
                return new string(array);


            }

        }

        

        private void EncryptMessage_Click(object sender, EventArgs e)
        {
           
            
            MessageLabel.Text = "Please enter the message you want encrypted.";
            Stream myStream;
            SaveFileDialog saveFileDialog1 = new SaveFileDialog();

            saveFileDialog1.Filter = "txt files (*.txt)|";
            
            saveFileDialog1.RestoreDirectory = true;

            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                if ((myStream = saveFileDialog1.OpenFile()) != null)
                {
                    Message = MessageTextBox.Text;
                    Message = LetterShift.Transform(Message);

                    StreamWriter sw = new StreamWriter(myStream);
                    sw.Write(Message);
                    sw.Close();
                    MessageTextBox.Text = "";
                    if
                        (Message == "")
                    {
                        MessageBox.Show("Enter a Message");
                    }
                    else
                    {
                        MessageBox.Show("Message Encrypted", "Confirmation");
                    }

                    myStream.Close();
                }
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            MessageTextBox.MaxLength = 300;
            this.FormBorderStyle = FormBorderStyle.FixedDialog;
           
            

           
        }


       
        private void MessageTextBox_TextChanged(object sender, EventArgs e)
        {
            
            
        }

        private void Opefile_Click(object sender, EventArgs e)
        {
            MessageLabel.Text = "Decrypted Message";
            T.OpenFile();
            
            

           

            
            
            




        }

        private void ClearTextBox_Click(object sender, EventArgs e)
        {
            MessageTextBox.Text = "";
        }
    }

}

And the class

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace FinalAssignment
{
    class EncryptionDecryption
    {


        public static string john;
        public string ss;





        static class LetterShift
        {
            public static string Transform(string value)
            {

                char[] array = value.ToCharArray();
                for (int i = 0; i < array.Length; i++)
                {
                    int LetterNumber = (int)array[i];

                    if (LetterNumber >= 'a' && LetterNumber <= 'z')
                    {
                        if (LetterNumber > 'm')
                        {
                            LetterNumber -= 13;
                        }
                        else
                        {
                            LetterNumber += 13;
                        }
                    }
                    else if (LetterNumber >= 'A' && LetterNumber <= 'Z')
                    {
                        if (LetterNumber > 'M')
                        {
                            LetterNumber -= 13;
                        }
                        else
                        {
                            LetterNumber += 13;
                        }
                    }
                    array[i] = (char)LetterNumber;
                }
                return new string(array);


            }

        }





        public void OpenFile()
        {


            Stream myStream2;
            OpenFileDialog openFileDialog1 = new OpenFileDialog();

            openFileDialog1.InitialDirectory = "c:\\";
            openFileDialog1.Filter = "txt files (*.txt)|*.txt";
            openFileDialog1.RestoreDirectory = false;

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {

                if ((myStream2 = openFileDialog1.OpenFile()) != null)
                {
                    using (myStream2)
                    {
                        StreamReader sr = new StreamReader(myStream2);
                        ss = sr.ReadToEnd();
                        ss = LetterShift.Transform(ss);
                        sr.Close();
                        MessageBox.Show(ss);

                    }
                }
            }

        }
    }
}

As you can see in the class I have only added the open and decrypt because this is the only thing working. I have set it to show the decrypted message in a message box, however I want this to be displayed in a text file, I cannot access text file properties from the class I wanted some thing like.

MessageTexBot.text = ss; So when the message is read from the file and decrypted it is displayed in the Text Box. I am also trying to put the save button code in a method but when I do it doesn't recognise for exampel this

f
                        (Message == "")
                    {
                        MessageBox.Show("Enter a Message");
                    }
                    else
                    {
                        MessageBox.Show("Message Encrypted", "Confirmation");
                    }

This is because message is in another form and this is declared in the class, but even if I make the message public in the other form still the same result.

Also how do I put the rot13 in a method

like so in class

public void encryp()

{


static class LetterShift
        {
            public static string Transform(string value)
            {

                char[] array = value.ToCharArray();
                for (int i = 0; i < array.Length; i++)
                {
                    int LetterNumber = (int)array[i];

                    if (LetterNumber >= 'a' && LetterNumber <= 'z')
                    {
                        if (LetterNumber > 'm')
                        {
                            LetterNumber -= 13;
                        }
                        else
                        {
                            LetterNumber += 13;
                        }
                    }
                    else if (LetterNumber >= 'A' && LetterNumber <= 'Z')
                    {
                        if (LetterNumber > 'M')
                        {
                            LetterNumber -= 13;
                        }
                        else
                        {
                            LetterNumber += 13;
                        }
                    }
                    array[i] = (char)LetterNumber;
                }
                return new string(array);


            }

        }

}

I hope someone understands what I am saying, but the actual program works perfectly it is just putting them in method that is the issue.


Thank yooou.

Edited 6 Years Ago by __avd: Added [code] tags. Encase your code in: [code] and [/code] tags.

You should put your code in

[code]

#your code here

[/code]
the code tags. This makes it a lot easier to see what your code is doing. It will keep indentation and highlight key words.

:)

You should put your code in

[code]

#your code here

[/code]
the code tags. This makes it a lot easier to see what your code is doing. It will keep indentation and highlight key words.

:)

Hi there I do apologise, as I cannot edit the post if someone would that would be great.

This article has been dead for over six months. Start a new discussion instead.