Few days ago i bought a WISON OR200 sensor for a web system that i am developing.
I used the SDK that sent to me the enterprise and was been testing in a window application and worked fine but i need it into a web application and i don´t know how to do it..
this is the windows form application:
WisSensorN WisObj = new WisSensorN(); // instance of wison object
objects in form:
private System.Windows.Forms.Button Enroll;
private System.Windows.Forms.Button Identify;
private System.Windows.Forms.PictureBox FingerPic;
private System.Windows.Forms.Button Stop;
private System.Windows.Forms.TextBox Status;
Load method() //Open() .DataEvent and SetDisplay are needed for the fingerprint
private void Form1_Load(object sender, EventArgs e)
{
WisObj.Open();
WisObj.DataEvent += new _IWisSensorNEvents_DataEventEventHandler(WisObj_DataEvent);
WisObj.SetDisplay((int)FingerPic.Handle);
// i can´t do WisObj.SetDisplay((int)FingerPic.Handle) on mvc web app
// because i can't get FingerPic object from view.
}
private void WisObj_DataEvent(WisSensorNLibLib.DATA data, string str)
{
switch (data)
{
case DATA.DATA_ENROLL:
// save the base 64 string of finger image
break;
case DATA.DATA_IDENTIFY_CAPTURE:
//validation
break;
case DATA.DATA_VERIFY_CAPTURE:
break;
}
}
private void Enroll_Click(object sender, EventArgs e)
{
WisObj.StartEnroll(); // it used for save the fingerprint
}
private void Identify_Click(object sender, EventArgs e)
{
WisObj.IdentifyCapture();
// it used to activate the sensor. When i did this on controller action,
// nothing happen. This is because the property setDisplay was not set
}
Any suggestions?
What can i do?
I asked to the company where i bought the fingerprint reader if have a SDK for web applications and never answered.
Help please!
Thnxs!
I think you are on a very wrong path. You can't simply use a device from a browser. The HTML/javascript 'application' that runs in the browser cannot connect to any local resource like I/O ports or Windows events. You will need special techniques, like ActiveX or Java applet to communicate with a device on a client machine.
Whether your website is MVC or plain ASP.NET or even PHP is irrelevant. If you don't know what ActiveX (and alumni) is used for and what drawbacks it has, you should look for a professional who can help you explain the situation and possibly develop a suitable solution.
Related
I have an UWP app and I'm trying to get a script invoked from a WebView. The NavigationCompleted event raises and my javascript is included (I think) in the page but the script isn't executed.
Here's my C# code
public sealed partial class MainPage : Page
{
readonly WebView _webView = new WebView();
public MainPage()
{
this.InitializeComponent();
Facebook.Navigate(new Uri("http://www.facebook.com/"));
_webView.NavigationCompleted += WebView_OnNavigationCompleted;
_webView.ScriptNotify += WebView_OnScriptNotify;
}
private async void WebView_OnNavigationCompleted(WebView sender, WebViewNavigationCompletedEventArgs args)
{
await _webView.InvokeScriptAsync("eval", new[]
{
"alert('HEY');" +
"window.external.notify('%%' + location.href);"
});
}
private void WebView_OnScriptNotify(object sender, NotifyEventArgs e)
{
var url = e.Value;
}
}
Also, I added http://www.facebook.com and https://www.facebook.com to my package manifest Content Uris list (include with all WinRT access).
I can't get the alert popping, same for the notify.
Thanks
As noted in the WebView docs, alert doesn't work in a WebView control.
For Script Notify to work you need to add the page to the app manifest as well:
To enable an external web page to fire the ScriptNotify event when calling window.external.notify, you must include the page's Uniform Resource Identifier (URI) in the ApplicationContentUriRules section of the app manifest.
And:
The URIs in this list must use HTTPS
So, try navigating to the https site instead.
Worst case, you can use a web allowed object in order to communicate back to your app as that can be injected in all cases.
I'm searching for a method to take a website offline with a message. I know about app_offline.htm, but I would like to do it programmatically.
Taking it offline is easy. I can generate app-offline.htm on root, but when I want web site to be back online it is not possible programmatically, because all services are down including images.
My project uses MVC (C#). For now I'm storing the site status in an SQL server database in a bit field.
I find a method to doing it with global.asax but I would like to see other solutions...
void Application_BeginRequest(object sender, EventArgs e)
{
if ((bool) Application["SiteOpenService"] == false)
{
if (!Request.IsLocal)
{
HttpContext.Current.RewritePath("/Site_Maintenance.htm");
}
}
}
ref:
http://www.codeproject.com/Tips/219637/Put-the-website-in-Maintanance-Mode-Under-Construc
I can see custom menu items and custom conversation windows and events inside them but nothing referring to how you'd execute code once a user signs into Lync. Does such an API exist?
I guess my alternative would be creating a Lync Automation object/my own client using the Suppressed ui and building whatever features I want into one of those?
There's nothing you can build into the Lync application, but you could run a separate application which can subscribe to the SignIn state of the user. That way, you'd know when a user signs-in, and could take appropriate action. You wouldn't need to create a SuppressedUI application for that, just something that ran in the background, or taskbar or something.
Here's a bare bones example:
namespace ThoughtStuff
{
class Program
{
static void Main(string[] args)
{
var client = LyncClient.GetClient();
client.StateChanged += client_StateChanged;
}
static void client_StateChanged(object sender, ClientStateChangedEventArgs e)
{
if (e.NewState == ClientState.SignedIn)
{
//do something on sign in
}
}
}
}
You might get errors if you try and attach to Lync in the SDK code using LyncClient.GetClient() if the Lync exe isn't running...but if you know that's likely to be a problem (such as if your application might be running before the user starts Lync), then you can gracefully handle it and retry in code.
We plan on implementing a WAP site using ASP.NET-MVC.
Has anyone any experiance of this? Are there any Gotchas?
We will also be implementing a "standard" web site for browsers. Would it be possible to have a single set of Models and Controllers, and just have seperate views for each site?
It is possible to have for the most part a single set of models and controllers.
The way to do it will be via implementing the following Theming/Templating engine.
[Theming Support][1]
I piggy backed my solution on top of a Theming/Templating engine.
The major deviation from the article source is in the Global.asax.cs file where you need to add the following lines of code:
protected void Application_BeginRequest(Object Sender, EventArgs e)
{
SetTheme();
}
//this will set the responses Content Type to xhtml and is necessary as C# sends the WML response header
protected void Application_PreSendRequestHeaders(Object Sender, EventArgs e)
{
if (this.Context.Items["themeName"].ToString() == "xhtml")
{
this.Context.Response.ContentType = "application/vnd.wap.xhtml+xml";
}
}
private void SetTheme()
{
//set the content type for the ViewEngine to utilize.
HttpContext context = this.Context;
MobileCapabilities currentCapabilities = (MobileCapabilities)context.Request.Browser;
String prefMime = currentCapabilities.PreferredRenderingMime;
string accept = context.Request.ServerVariables["HTTP_ACCEPT"];
context.Items.Remove("theme");
context.Items.Remove("themeName");
if (accept.Contains("application/vnd.wap.xhtml+xml"))
{
context.Items.Add("themeName", "xhtml");
}
else if (prefMime == "text/vnd.wap.wml")
{
context.Items.Add("themeName", "WAP");
}
if (!context.Items.Contains("themeName"))
{
context.Items.Add("themeName", "Default");
}
}
I know I had to make a couple of code changes to make it MVC 1 compatible, but I can't remember the exact changes.
The other major problem I had was debugging the output. For this I used firefox with an extension ([User Agent Switcher][2]) that I've changed to add Accept Types to it.
For WAP2/XHTML1.2 the Accept Types are: text/html,application/vnd.wap.xhtml+xml,application/xhtml+xml,application/xml;q=0.9,/;q=0.8
Obviously you need your masterpage and content pages to adhere to WML or XHTML1.2
[1]: http://frugalcoder.us/post/2008/11/13/ASPNet-MVC-Theming.aspx Theming Support
[2]: http://chrispederick.com/work/user-agent-switcher/ User Agent Switcher
i built an intranet on .NET MVC. I'm also building a separate planning tool in Winforms (performance choice). I would now like to 'open' the planning tool from the intranet (IE7) and pass an argument (e.g. Workorder number) so I can display the planning for that specific item. Is this possible?
I have a .application file for the Winforms application. I'm also able to change everything on both the .NET MVC intranet and the Winforms planning tool.
You can't simply call the application from the HTML; that would be a security hole. However, you can have the application register to be able to handle these requests via the registry. You say "no-install", so this might be a problem. Maybe your app could modify the registry on the first load.
Anyway, the app would register to handle a specific protocol (like when you click on an itunes:// or ftp:// link).
Instead you'd have something like:
View workflow #3472
which then launches your app with the argument specified.
See http://msdn.microsoft.com/en-us/library/aa767914(VS.85).aspx . You say IE7, but this should work with other browsers, too, once the protocol is registered.
Yes you can do it.
private string _output = "";
public string Execute()
{
try
{
Process process = new Process();
process.OutputDataReceived += new DataReceivedEventHandler(process_OutputDataReceived);
process.StartInfo.FileName = "path to exe";
process.StartInfo.Arguments = "here you can pass arguments to exe";
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
Process currentProcess = Process.GetCurrentProcess();
process.StartInfo.UserName = currentProcess.StartInfo.UserName;
process.StartInfo.Password = currentProcess.StartInfo.Password;
process.Start();
process.BeginOutputReadLine();
process.WaitForExit();
return _output;
}
catch (Exception error)
{
return "ERROR : " + error.Message;
}
}
private void process_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
if (e.Data != null)
{
_output += e.Data + Environment.NewLine;
}
}
It's a simple example. You can use different threads to read output and errors from exe.