Windows Forms Application To Generate A Unique Random Password

This blog demonstrates how to create an application to generate random number encrypted passwords. We will create one Windows Form application in C# which generates a unique encrypted password.

So, let's open Visual Studio and follow these steps.

Step 1

Open Visual Studio.

Step 2

Go to File >> New >> Project. 

Windows.Forms

Step 3

Now, choose Visual C# and select Windows. Then, select Windows Forms Application. Now, you can give your application name and click on OK button. 

Windows.Forms

Step 4

Design the form like this.

Windows.Forms

Step 5

Create one static method with the name "Shuffle" in code-behind. 

This Shuffle method returns a string parameter with the position changed for all the characters.

  1. static string Shuffle(string input) {  
  2.     var q = from c in input.ToCharArray()  
  3.     orderby Guid.NewGuid()  
  4.     select c;  
  5.     string s = string.Empty;  
  6.     foreach(var r in q)  
  7.     s += r;  
  8.     return s;  
  9. }  

Step 6

Now, write the following code in ValueChanged event of Tickbar control.

  1. private void trckbar_length_ValueChanged(object sender, EventArgs e) {  
  2.     passLength = trckbar_length.Value + 1; //trackbar value starts from 0, so I add +1 to make it understandable;  
  3.     lbl_passlength.Text = passLength.ToString();  
  4. }  

Step 7

After this, write the following code in click event of the "Generate password" button.

  1. private void btn_generatepass_Click(object sender, EventArgs e)  
  2. {  
  3.     txb_password.Text = "";  
  4.     string text = "aAbBcCdDeEfFgGhHiIjJhHkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ01234567890123456789,;:!*$@-_=,;:!*$@-_=";  
  5.     text = Shuffle(text); //shuffle the above symbols using shuffle() method.  
  6.     text = text.Remove(passLength); //cut the string size according to the chosen trackbar value.  
  7.     txb_password.Text = text;  
  8. }  

Now, let's write full C# code, so you can understand it very well.

C# Code

  1. using System;  
  2. using System.Collections.Generic;  
  3. using System.ComponentModel;  
  4. using System.Data;  
  5. using System.Drawing;  
  6. using System.Linq;  
  7. using System.Text;  
  8. using System.Threading.Tasks;  
  9. using System.Windows.Forms;  
  10. namespace iPass {  
  11.     public partial class MainForm: Form {  
  12.         int passLength = 0;  
  13.         public MainForm() {  
  14.             InitializeComponent();  
  15.         }  
  16.         //Shuffle method that returns a string parameter with all the characters' position changed.  
  17.         static string Shuffle(string input) {  
  18.             var q = from c in input.ToCharArray()  
  19.             orderby Guid.NewGuid()  
  20.             select c;  
  21.             string s = string.Empty;  
  22.             foreach(var r in q)  
  23.             s += r;  
  24.             return s;  
  25.         }  
  26.         private void btn_generatepass_Click(object sender, EventArgs e) {  
  27.             txb_password.Text = "";  
  28.             string text = "aAbBcCdDeEfFgGhHiIjJhHkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ01234567890123456789,;:!*$@-_=,;:!*$@-_=";  
  29.             text = Shuffle(text); //shuffle the above symbols using shuffle() method.  
  30.             text = text.Remove(passLength); //cut the string size according to the chosen trackbar value.  
  31.             txb_password.Text = text;  
  32.         }  
  33.         private void trckbar_length_ValueChanged(object sender, EventArgs e) {  
  34.             passLength = trckbar_length.Value + 1; //trackbar value starts from 0, so I add +1 to make it understandable;  
  35.             lbl_passlength.Text = passLength.ToString();  
  36.         }  
  37.     }  
  38. }  

Step 8

Run this project.

Windows.Forms

Summary

This Password Generator will generate a unique random password using characters, letters, numbers, and special characters so it can't be decrypted easily.