Windows show "Run" dialog and populate the command with custom content

show-run-dialog.ps1

# Show the "Run" dialog.
(New-Object -ComObject "Shell.Application").FileRun()
Start-Sleep -Milliseconds 50

# Focus at the dialog.
# Doesn't seem to work, I've got no VisualBasic installed.
#[Microsoft.VisualBasic.Interaction]::AppActivate(“Run”)

# Type in the command.
[System.Windows.Forms.SendKeys]::SendWait("hehe")