How to check what version of Windows Media Player is installed on the machine?

As far as I know Windows Media Player 10 is the minimum requirement for WPF MediaElement to work. What is a decent way to programmatically (from .NET) check if WMP is present, and its versi开发者_如何转开发on?

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The method I used in my installer is to check this registry value:

HKLM
Software\Microsoft\MediaPlayer\PlayerUpgrade
PlayerVersion

The PlayerVersion value will be set to a string like "10,0,0,0". (Note that commas, not periods, are used to separate the numbers.) You need to extract the first number (the major version) and make sure that it is 10 or higher.

I couldn't find any official documentation about how to detect WMP, but the above method seems to work properly with the current versions of Windows and WMP.

Note that if WMP9 (the version that ships with Windows XP) is installed, your application will not crash when you try to use a MediaElement, but the control won't render anything, and warning messages will be printed to the debugger.

If your application will only be used with Vista or higher, you don't need to worry about any of this, because Vista comes with WMP10.

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Here's how you can check all the products installed on the system:

SelectQuery allProductsQuery = new SelectQuery("Win32_Product");

ManagementObjectSearcher allProducts =
new ManagementObjectSearcher(allProductsQuery);

foreach(ManagementObject product in allProducts.Get())
{
Console.WriteLine("Product {0} is at version {1}",
product.Properties["Name"].Value,
product.Properties["Version"].Value);
}

You need to add "using System.Management" and a reference to "System.Management.dll".

To get informations for a specific product you can refine the query or search the product within all of them.

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i found this solution:

FileVersionInfo inf = FileVersionInfo.GetVersionInfo(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), "Windows Media Player", "wmplayer.exe"));
        if (inf.FileVersion.StartsWith("9"))
        {...