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  #1  
Old 24-12-2008
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Join Date: Dec 2008
Posts: 30
How to Generate Random Password in vb.net

Hi, I am creating new application in vb.net, but i want that users of the system should not able to generate the passwords it should be generate randomly.
and i am not able to do this.
will you please help me out?
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  #2  
Old 24-12-2008
Member
 
Join Date: Dec 2008
Posts: 35
Re: How to Generate Random Password in vb.net

The code given below is to generate the random password.
you can use it according to your requirements

Imports Microsoft.VisualBasic
Imports System
Imports System.Data
Imports System.Configuration
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls

Partial Public Class _Default
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If IsPostBack Then
Label1.Text = "Please enter a password length (e.g. 8)"
End If
End Sub

Public Shared Function CreateRandomPassword(ByVal PasswordLength As Integer) As String
Dim _allowedChars As String = "abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ0123456789"
Dim randNum As New Random()
Dim chars(PasswordLength - 1) As Char
Dim allowedCharCount As Integer = _allowedChars.Length

For i As Integer = 0 To PasswordLength - 1
chars(i) = _allowedChars.Chars(CInt(Fix((_allowedChars.Length) * randNum.NextDouble())))
Next i

Return New String(chars)
End Function

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
If TextBox1.Text <> "" Then
Dim myInt As String = TextBox1.Text.ToString()
Label1.Text = "Your generated password is: " & CreateRandomPassword(Integer.Parse(myInt))
End If
End Sub
End Class
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