public static extern bool CryptUIWizExport
(
[param: In, MarshalAs(UnmanagedType.U4)] CryptUIWizExportFlags dwFlags,
[param: In, MarshalAs(UnmanagedType.SysInt)] IntPtr hwndParent,
[param: In, MarshalAs(UnmanagedType.LPWStr)] string pwszWizardTitle,
[param: In] ref CRYPTUI_WIZ_EXPORT_INFO pExportInfo,
[param: In, MarshalAs(UnmanagedType.SysInt)] IntPtr pvoid
);
private void exportPrivateKey_Click(object sender, EventArgs e)
{
var root = _certificateProvider.GetRootCertificate();
var exportInfo = new CRYPTUI_WIZ_EXPORT_INFO();
exportInfo.context = new CRYPTUI_WIZ_EXPORT_INFO_UNION { pCertContext = root.Handle };
exportInfo.cStores = 0;
exportInfo.dwSize = (uint)Marshal.SizeOf(typeof(CRYPTUI_WIZ_EXPORT_INFO));
exportInfo.dwSubjectType = CryptUIExportInfoSubjectType.CRYPTUI_WIZ_EXPORT_CERT_CONTEXT;
exportInfo.pwszExportFileName = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory), "FiddlerRootCert.pfx");
exportInfo.rghStores = IntPtr.Zero;
NativeMethods.CryptUIWizExport(CryptUIWizExportFlags.CRYPTUI_WIZ_EXPORT_PRIVATE_KEY | CryptUIWizExportFlags.CRYPTUI_WIZ_EXPORT_NO_DELETE_PRIVATE_KEY, Handle, "Export Fiddler Root Certificate", ref exportInfo, IntPtr.Zero);
}