Search results matching tag 'WiFi'

Problem with SDF's AddPreferredNetwork and ConnectToPreferredNetwork

wsptr — Tue, 10 May 2011 06:13:59 GMT

I'm using SDF to develope a windows mobile program that used to connect with wifi. When I'm trying to connect my device to an AP, it will be successful with a right SSID and a right password, but if I give a RIGHT SSID AND A WRONG PASSWORD, the AddPreferredNetwork(string SSID, bool infrastructureMode, string authkey, int keyIndex, AuthenticationMode authMode, WEPStatus privacyMode, EAPParameters eapParams) method and ConnectToPreferredNetwork(string SSID) method still return true values. I don't know how to solve this problem, could anyone please help? Thanks a lot!

Smart Adapter Switching

twright — Tue, 12 Apr 2011 14:05:10 GMT

I was recently given a symbol 9550 running windows 6.5 mobile. They asked me to write a program that would continue to run in the background and flip networks automatically. So when the wifi drops below -90, it switches to cell, then if it comes back to -70, it comes back to wifi. I quickly found OpenNETCF and started coding away. I am able to get the device to drop to cell, but to do that, I have to unbind the wifi adapter. To continue to monitor my specific AP, it seems like I need to turn off the radio and turn it back on. a refresh on it doesn't seem to show that its back in range.

What is the correct way to monitor wifi signals while in cell mode?

Re: problems with getting the NearbyAccessPoints

GaryNovosel — Tue, 19 Oct 2010 20:24:12 GMT

[quote user="banti"]I try to develope an application that lists the nearby acess points, like this( http://msdn.microsoft.com/en-us/library/aa446491.aspx) On the 1-st device it works fine,
[/quote]

I too am working on a similar project. I see that the classes and methods referenced in the MS article are now deprecated and that we're to use OpenNETCF.Net.NetworkInformation now. However, I can find no meaningfull references or samples for this. Are there any out there? Where can I find them?

WIFI connection - Signalstrength

jkorsten — Wed, 08 Sep 2010 12:07:39 GMT

Hello everybody,

I have a problem. I'm using OpenNETCF.Net.NetworkInformation.AccessPoint to get the signalstrength of the Wifi connection.

This is going fine. BUT, when I get closer to the accespoint the signal gets stronger and I can get a dBm signal from -90 till -70 when the signal gets stronger it disappears. The accespoint can't be found.

Some more information. The accespoint i'm looking for is from a hidden network with a WEP key. I can detect the network but when the signal gets stronger it dissapears (but the WM-device stays connected).
The neighbours have a WPA2 key and this network doesn't give any troubles even with a signalstrength of -60.

What can be the problem here?

Kind regards,

JKorsten

ps: the code I use is:

try
{
Boolean bParlWifi = false;
// Get all the WZC Network Interfaces
foreach (OpenNETCF.Net.NetworkInformation.INetworkInterface currentNetworkInterface in
               OpenNETCF.Net.NetworkInformation.WirelessZeroConfigNetworkInterface.GetAllNetworkInterfaces())
{
    // Make sure we are dealing with a WZC Network Interface
    if (currentNetworkInterface is OpenNETCF.Net.NetworkInformation.WirelessZeroConfigNetworkInterface)
    {
      OpenNETCF.Net.NetworkInformation.WirelessZeroConfigNetworkInterface wzc =
        (OpenNETCF.Net.NetworkInformation.WirelessZeroConfigNetworkInterface)currentNetworkInterface;
      // Get all the Nearby Access Points that the WZC Network Interface can see
      listBox1.Items.Clear();
      foreach (OpenNETCF.Net.NetworkInformation.AccessPoint currentAccessPoint in wzc.NearbyAccessPoints)
      {
        // Output the name and the signal stregth of this access point
        this.listBox1.Items.Add(currentAccessPoint.Name + " : " + currentAccessPoint.SignalStrength.Decibels.ToString() + " : "
                                           + currentAccessPoint.PhysicalAddress.ToString());
      }
    }
}
}
catch (Exception ex)
{
MessageBox.Show("Problem : " + ex.Message);
}

problems with getting the NearbyAccessPoints

banti — Fri, 23 Jul 2010 12:14:28 GMT

Hello!
I have 2 smart device phones:
1. I-mate JasJar with windows mobile 5.0
2.HTC Touch 2 with windows mobile 6.5 (i just bought it)
I try to develope an application that lists the nearby acess points, like this( http://msdn.microsoft.com/en-us/library/aa446491.aspx) On the 1-st device it works fine,

but on the 2-nd device there arent any APs in the nearbyAccessPoint list. (same developer environment)
This is the code if it helps:

if (selectedAdapter.IsWirelessZeroConfigCompatible && selectedAdapter.IsWireless) // these bools are both true
{
AccessPointCollection acc = selectedAdapter.NearbyAccessPoints;
foreach (AccessPoint ap in acc)
{
//code
}
}
On the other hand i can read the signal strength and ssid of the AP wich is connected to my device.
Any idea? What could be the problem?
Thanks for your help.

isWireless method bug?

karmo — Mon, 07 Jun 2010 08:35:42 GMT

hello everyone

i am using opennet 2.2 to search adapters that are connected to a AP.

in debug mode i found an adapter with the correct AP IP but the library tells that the adapter isn't a wireless one.
here is the code:

Public Function GetSignalStrength() As String
        Dim adapters As AdapterCollection = Networking.GetAdapters()
        For Each adap As Adapter In adapters
            MsgBox("ip: " + adap.CurrentIpAddress())
            MsgBox("name: " + adap.Name)
            MsgBox("is wzc: " + adap.IsWirelessZeroConfigCompatible.ToString)
            Try
                MsgBox("AP associated: " + adap.AssociatedAccessPoint)
            Catch ex As Exception
                MsgBox("no ap")
            End Try

            Try
                MsgBox("signal: " + adap.SignalStrength.Strength.ToString)
            Catch ex As Exception
                MsgBox("no signal")
            End Try
            If adap.IsWireless Then
                Return adap.SignalStrength.Strength.ToString
            End If
        Next
        Return "no wireless"
    End Function

both adap.IsWirelessZeroConfigCompatible and adap.IsWireless are false but i know that the adapter (is onlyone and is the correct one...) is connected to a AP with the correct IP (192.168.20.253).
i tested the code on a pocket pc symbol v 4.20 motorola mc9060.

How do I disable DHCP in OpenNETCF 2.3?

jevans — Wed, 31 Mar 2010 21:57:38 GMT

What's the equivalent of OpenNETCF.Net.Adapter.DhcpEnabled using OpenNETCF.Net.NetworkInformation?

Thanks,

- jevans

Signal Strength in Decibels only shows increments of 10

Fred Kendall — Sat, 27 Mar 2010 19:28:35 GMT

I need to get the signal strengh in Decibels with full set of integer values from 0 thru 100. Currently, I'm only getting values of 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100. How do I get the actual values from 1 thru 100 and not incremented by 10's?

How to find wireless network

jevans — Wed, 24 Mar 2010 00:38:53 GMT

Hello,

I found this article on MSDN http://msdn.microsoft.com/en-us/library/aa446491.aspx. The sample code worked great but I wanted to do a bit more. When I come to the opennetcf.org site, it seems most of the published sample is obsolete. So I tried to find the replacements but I'm having some difficulty.

Networking.GetAdapters() suggests using NetworkInterface.GetAllNetworkInterfaces(). That works but the wireless interface does not report being wireless as the adapter version did. Or at least I haven't found it.

I have:

    INetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
    foreach (NetworkInterface ni in interfaces)
    {
        if (ni.NetworkInterfaceType == NetworkInterfaceType.Wireless80211)

but the wireless interface just reports 'Ethernet'. The wireless radio is on.

Any suggestions?

Thanks,

- jevans

How to connect to access point with a non WirelessZeroConfig Wifi card?

buju — Wed, 13 Jan 2010 15:42:27 GMT

Hi, Main goal: I want to programmatically connect to an access point using .NET CF 3.5 in C#. I have following situation: I have a mobile device with just Windows CE 5.0.1400 on it and it seems that the WLAN card is not a WirelessZeroConfig WLAN card. Device Info: http://www.mobile.datalogic.com/product.aspx?idprod=138#Features I tried the GetNearbyAPList application code to get all network interfaces but it always return "No WZC adapter found" because my NIC is just from type WirelessNetworkInterface. So my question is, how do I connect to an access point (WPA2 PSK) with just WirelessNetworkInterface? Is there some workaround that I could do? Maybe using some native C++ calls in my C# application? Links, papers, forums and other ressources to help me in this matter is highly appreciated Thanks in advice, Buju