private void sdkversion_Click(object sender, EventArgs e) { string version = ""; try { if (myCZKEMClass.GetDeviceStrInfo(1, Convert.ToInt32(textEnroll.Text), out version)) { result.AppendText(version); result.AppendText(Environment.NewLine); } else { myCZKEMClass.GetLastError(ref errorcode); result.AppendText("Error Getting Version " + errorcode); result.AppendText(Environment.NewLine); } } catch (Exception) { throw; } }