Question

I am writing a C# application and I need to determine if quicktime is installed on the system and what version.
This is on windows.

Answer 1

A quick Google search turned up the following code from this page:

strComputer = "."

Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")

Set colItems = objWMIService.ExecQuery _
    ("Select * From Win32_Product Where Name = 'QuickTime'")

If colItems.Count = 0 Then
    Wscript.Echo "QuickTime is not installed on this computer."
Else
    For Each objItem in colItems
        Wscript.Echo "QuickTime version: " & objItem.Version
    Next
End If

“But wait!” you say, “That’s VBScript, not C#!” That’s true, but it’s VBScript that does WMI queries. Another quick Google search turns up how to do WMI queries from C#.