Is there another way to ask for credentials in Powershell but Get-Credential?

user_13830866 0
Viewed 556

My Powershell Script asks for credentials using the following syntax, and it works all right:

$credentials = (Get-Credential -Message "Enter Password")

But the problem is that the window that pops to enter the user name and password has very little space and it is uncomfortable for the user to enter large user names (large server name backslash large user names), and that windows does not allow resizing.

I whould like to give my users the hability to enter usernames and passowrd in another bigger windows. Any Idea?

credentials powershell
1 Answers

I had something similar to this so I thought why not share it. Give it a try, it does not look as pretty as Get-Credential but you can resize it.

It will return a PSCredential object, same as Get-Credential.
The OK button only becomes Enabled if Username and Password have text.

example

Add-Type -AssemblyName System.Windows.Forms

$refAssemblies = @(
    'System.Drawing'
)
if($PSVersionTable.PSVersion.Major -ge 6)
{
    $refAssemblies += 'System.Drawing.Common'
}

Add-Type -ReferencedAssemblies $refAssemblies -IgnoreWarnings -WarningAction Ignore -TypeDefinition @'
using System; 
using System.Runtime.InteropServices;
using System.Drawing;

public class DPI
{  
    [DllImport("gdi32.dll")]
    static extern int GetDeviceCaps(IntPtr hdc, int nIndex);

    public enum DeviceCap
    {
        VERTRES = 10,
        DESKTOPVERTRES = 117
    } 

    public static float scaling()
    {
        Graphics g = Graphics.FromHwnd(IntPtr.Zero);
        IntPtr desktop = g.GetHdc();
        int LogicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.VERTRES);
        int PhysicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.DESKTOPVERTRES);

        return (float)PhysicalScreenHeight / (float)LogicalScreenHeight;
    }
}
'@

[void][System.Windows.Forms.Application]::EnableVisualStyles()
$DPI = [math]::round([dpi]::scaling(),2) * 100
$bounds = [System.Windows.Forms.Screen]::PrimaryScreen.WorkingArea
$bounds.Width = ($bounds.Width / 100) * $DPI
$bounds.Height = ($bounds.Height / 100) * $DPI

$mainForm = [System.Windows.Forms.Form]::new()
$mainForm.StartPosition = 'CenterScreen'
$mainForm.FormBorderStyle = 'Sizable'
$mainForm.Text = 'Custom Get Credential'
$mainForm.WindowState = 'Normal'
$mainForm.KeyPreview = $True
$mainForm.Font = [System.Drawing.Font]::new('Calibri',12,[System.Drawing.FontStyle]::Regular)
$mainForm.Icon = [System.Drawing.Icon]::ExtractAssociatedIcon((Get-Process -Id $PID).Path)
$mainForm.MinimumSize = [System.Drawing.Size]::new(($bounds.Width/4.5),($bounds.Height/4.5))
$mainForm.MaximumSize = [System.Drawing.Size]::new($bounds.Width,($bounds.Height/4.5))
$mainForm.MaximizeBox = $false
$mainForm.Size = $mainForm.MinimumSize

$credentialMsg = [System.Windows.Forms.Label]::new()
$credentialMsg.Location = [System.Drawing.Size]::new(10,10)
$credentialMsg.Size = [System.Drawing.Size]::new(($mainForm.Width-30),30)
$credentialMsg.Text = 'Supply values for the following parameters:'
$mainForm.Controls.Add($credentialMsg)

$userLbl = [System.Windows.Forms.Label]::new()
$userLbl.Location = [System.Drawing.Size]::new(10,50)
$userLbl.Size = [System.Drawing.Size]::new(80,30)
$userLbl.Text = 'Username'
$mainForm.Controls.Add($userLbl)

$userTxtBox = [System.Windows.Forms.TextBox]::new()
$userTxtBox.Location = [System.Drawing.Size]::new(($userLbl.Width+10),50)
$userTxtBox.Size = [System.Drawing.Size]::new(($mainForm.Width-120),60)
$mainForm.Controls.Add($userTxtBox)

$passwordLbl = [System.Windows.Forms.Label]::new()
$passwordLbl.Location = [System.Drawing.Size]::new(10,($userLbl.Location.Y+40))
$passwordLbl.Size = [System.Drawing.Size]::new(80,30)
$passwordLbl.Text = 'Password'
$mainForm.Controls.Add($passwordLbl)

$passwordTxtBox = [System.Windows.Forms.TextBox]::new()
$passwordTxtBox.Location = [System.Drawing.Size]::new(($passwordLbl.Width+10),($userTxtBox.Location.Y+40))
$passwordTxtBox.Size = [System.Drawing.Size]::new(($mainForm.Width-120),60)
$passwordTxtBox.UseSystemPasswordChar = $True
$passwordTxtBox.Anchor = 'top,left'
$mainForm.Controls.Add($passwordTxtBox)

$cancelBtn = [System.Windows.Forms.Button]::new()
$cancelBtn.Location = [System.Drawing.Size]::new(($mainForm.Width-110),($passwordTxtBox.Location.Y+40))
$cancelBtn.Size = [System.Drawing.Size]::new(80,35)
$cancelBtn.Text = '&Cancel'
$cancelBtn.Anchor = 'right,bottom'
$cancelBtn.Add_Click({
    $mainForm.DialogResult = 'Cancel'
})
$mainForm.Controls.Add($cancelBtn)

$okBtn = [System.Windows.Forms.Button]::new()
$okBtn.Location = [System.Drawing.Size]::new(($cancelBtn.Location.X-$cancelBtn.Width-5),$passwordTxtBox.Location.Y+40)
$okBtn.Size = $cancelBtn.Size
$okBtn.Text = '&OK'
$okBtn.Anchor = $cancelBtn.Anchor
$okBtn.Enabled = $false
$okBtn.Add_Click({
    $mainForm.DialogResult = 'OK'
})
$mainForm.Controls.Add($okBtn)

$okBtnEnableEvent = {
    if(
        [string]::IsNullOrWhiteSpace($userTxtBox.Text) -or 
        [string]::IsNullOrWhiteSpace($passwordTxtBox.Text)
    )
    {
        $okBtn.Enabled = $false
    }
    else
    {
        $okBtn.Enabled = $True
    }
}
$userTxtBox.Add_TextChanged($okBtnEnableEvent)
$passwordTxtBox.Add_Textchanged($okBtnEnableEvent)

$mainForm.Add_Resize({
    $userTxtBox.Size = [System.Drawing.Size]::new(($this.Width-120),60)
    $passwordTxtBox.Size = [System.Drawing.Size]::new(($this.Width-120),60)
})

$mainForm.AcceptButton = $okBtn
$mainForm.CancelButton = $cancelBtn
$mainForm.Add_Shown({ $this.Activate() })

function New-PSCredential {
param(
    [string]$Username,
    [string]$Password
)
    
    $passw = ConvertTo-SecureString $Password.Trim() -AsPlainText -Force
    [System.Management.Automation.PSCredential]::new($Username.Trim(),$passw)
}

if('OK' -eq $mainForm.ShowDialog())
{
    New-PSCredential -Username $userTxtBox.Text -Password $passwordTxtBox.Text
}

$mainForm.Dispose()

Edit:

user_153395440
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