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Tuesday, February 1, 2011

C# | Determine if Adobe (Macromedia) Flash player installed.

All started when I needed to integrate an Adobe (Macromedia) Flash object in my C# WinForm application.
I saw several posts about it, where two solutions where presents:
1. Add WebBrowser Control and just nevigate to the "test.swf" file.
2. Create COM object of ADOBE MACROMEDIA.

I liked the 1st option more, because I don't need to handle COM objects (and to add another DLL to the app).
Here is the code I used:
WebBrowser wb = new WebBrowser();
//wb.Location = SOME LOCATION
//wb.Size = SOME SIZE
wb.AllowNavigation = false;
wb.IsWebBrowserContextMenuEnabled = false;
this.Controls.Add(wb); // this = FORM
wb.Navigate(@"C:\test.swf");

BUT, Then i noticed that when a pc do NOT have Adobe (Macromedia) Flash player installed, the webbrowser display a big red X.
SO, before I use the FLASH image in my winform application, I needed to check if FLASH player is INSTALLED or not!

The idea is to check the registry for:
HKEY_LOCAL_MACHINE\SOFTWARE\Macromedia\FlashPlayer\CurrentVersion

And indeed it worked!
Here is the full code for testing if FLASH installed (and also get the major Version):
internal static int? GetFlashPlayerVersion()
{
    using (RegistryKey rk = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Macromedia\FlashPlayer"))
    {
        if (rk != null)
        {
            string version = rk.GetValue("CurrentVersion") as string;
            if (string.IsNullOrEmpty(version) == false)
            {
                int idx = version.IndexOf(",");
                if (idx > 0)
                {
                    int value;
                    if (int.TryParse(version.Substring(0, idx), out value) == true)
                    {
                        return value;
                    }
                }
            }
        }
    }
    return null;
}

And the code which using the method:
int? flashVersion = WindowsUtils.GetFlashPlayerVersion();
if (flashVersion.HasValue == true && flashVersion > 6)
{
    WebBrowser wb = new WebBrowser();
    wb.AllowNavigation = false;
    wb.IsWebBrowserContextMenuEnabled = false;
    this.Controls.Add(wb); // this = FORM
    wb.Navigate(@"C:\test.swf");
}

Best regards,
MDB-Blog

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