public static string GetMimeTypeFromWindowsRegistry(string filename)
{
System.Security.Permissions.RegistryPermission regPerm = new System.Security.Permissions.RegistryPermission(System.Security.Permissions.RegistryPermissionAccess.Read, "\\HKEY_CLASSES_ROOT");
Microsoft.Win32.RegistryKey classesRoot = Microsoft.Win32.Registry.ClassesRoot;
FileInfo fi = new FileInfo(filename);
string extension = fi.Extension.ToUpper();
Microsoft.Win32.RegistryKey typeKey = classesRoot.OpenSubKey(@"MIME\Database\Content Type");
foreach (string keyname in typeKey.GetSubKeyNames())
{
Microsoft.Win32.RegistryKey currentKey = classesRoot.OpenSubKey(@"MIME\Database\Content Type\" + keyname);
string currentExtension = (string)currentKey.GetValue("Extension", null);
if (!string.IsNullOrEmpty(currentExtension) && currentExtension.ToUpper() == extension)
{
return(keyname);
}
}
return(string.Empty);
}
public string GetCurrentValue()
{
// @ Review : Should this move in SystemInformation ?
if (ieVersion == string.Empty)
{
System.Security.Permissions.RegistryPermission registryPermission = null;
registryPermission = new System.Security.Permissions.RegistryPermission(System.Security.Permissions.RegistryPermissionAccess.Read, "Version");
try
{
registryPermission.Assert();
using (Microsoft.Win32.RegistryKey rk = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\\Microsoft\\Internet Explorer"))
{
string fullversion = (string)rk.GetValue("Version");
ieVersion = System.Text.RegularExpressions.Regex.Replace(fullversion, @"(^[^\.]+\.[^\.]+)\..+?$", "$1");
}
}
finally
{
System.Security.Permissions.RegistryPermission.RevertAssert();
}
}
return(ieVersion);
}
