private void button1_Click(object sender, EventArgs e) { OpenFileDialog oFile = new OpenFileDialog(); oFile.Multiselect = false; oFile.ShowDialog(); NetworkData data = NeuralNetwork.ReadNetworkFromFile(oFile.FileName); charecterNet = new BackPropogationNetwork(data); //MessageBox.Show("Read OK"); if(data!=null) button2.Enabled = true; }