private void Server_AdminCredentialsRequired(object sender, AdminCredentialsRequiredEventArgs e)
{
try
{
var identity = new Opc.Ua.Client.Controls.UserNamePasswordDlg().ShowDialog(e.Credentials, "Provide PushServer Administrator Credentials");
if (identity != null)
{
e.Credentials = identity;
e.CacheCredentials = true;
}
}
catch (Exception exception)
{
ExceptionDlg.Show(this.Text, exception);
}
}
private IUserIdentity ElevatePermissions()
{
IUserIdentity oldUser = Session.Identity;
if (AdminCredentials == null || !Object.ReferenceEquals(Session.Identity, AdminCredentials))
{
IUserIdentity newCredentials = null;
if (AdminCredentials == null)
{
var handle = AdminCredentialsRequired;
if (handle == null)
{
throw new InvalidOperationException("The operation requires administrator credentials.");
}
var args = new AdminCredentialsRequiredEventArgs();
handle(this, args);
newCredentials = args.Credentials;
if (args.CacheCredentials)
{
AdminCredentials = args.Credentials;
}
}
else
{
newCredentials = AdminCredentials;
}
try
{
Session.UpdateSession(newCredentials, PreferredLocales);
}
catch (Exception)
{
AdminCredentials = null;
throw;
}
}
return(oldUser);
}
