private void button1_Click(object sender, EventArgs e) { if (comboBoxUserType.SelectedItem != null && txtUsername.Text != null && txtPassword.Text != null && txtEmail.Text != null && txtBalance.Text != null && txtFullname.Text != null) { HttpClient client = new HttpClient(); string pw = EncryptionDecryption.ComputeSha256Hash(txtPassword.Text); var uri = new Uri(string.Format("https://apupay.azurewebsites.net/api/Login?type=" + comboBoxUserType.SelectedItem.ToString() + "&username="******"&password="******"&email=" + txtEmail.Text + "&balance=" + txtBalance.Text + "&name=" + txtFullname.Text)); HttpResponseMessage response; client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); var content = new StringContent(String.Empty, Encoding.UTF8, "application/json"); response = client.PostAsync(uri, content).Result; if (response.StatusCode == System.Net.HttpStatusCode.Accepted) { MessageBox.Show("Registered Successfully"); adminMenu.Show(); this.Close(); } else { MessageBox.Show("Rejected"); response.Dispose(); client.Dispose(); txtUsername.Clear(); txtPassword.Clear(); } } else { MessageBox.Show("Please Fill up All Details"); } }