Hello
I am trying to open a text file, I use this code :

private: void button1_Click(System::Object^  sender, System::EventArgs^  e)
{
Stream^ myStream;
OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog;
openFileDialog1->InitialDirectory = "c:\\";
openFileDialog1->Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
openFileDialog1->FilterIndex = 2;
openFileDialog1->RestoreDirectory = true;
if ( openFileDialog1->ShowDialog() == ::DialogResult::OK )
     {
        if ( (myStream = openFileDialog1->OpenFile()) != nullptr )
        {
           myStream->Close();
        }
     }
}

The problem is that I obtain this error messages :

error C3083: 'DialogResult': the symbol to the left of a '::' must be a type
error C2039: 'OK' : is not a member of '`global namespace''
error C2065: 'OK' : undeclared identifier

All the errors are in this line :

if ( openFileDialog1->ShowDialog() == ::DialogResult::OK )

Please help me
Thanks