Turns out it was as simple as creating a public void PreviewImageUpdate() outside of the bg worker

private void t_processFrame_Tick(object sender, EventArgs e) {
// UpdateMotionDetectionPreviiw();
if (!_bw_frameProcessor.IsBusy) {
_bw_frameProcessor.RunWorkerAsync();
}
}

private void _bw_frameProcessor_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) {
_bw_frameProcessor.Dispose();
}

private void _bw_frameProcessor_DoWork(object sender, DoWorkEventArgs e) {
UpdateMotionDetectionPreview();
}

public void UpdateMotionDetectionPreview() {
try {
GetImage = new Bitmap(screen.Bounds.Width, screen.Bounds.Height);
g = Graphics.FromImage(GetImage);
g.CopyFromScreen(screen.Bounds.X, 0, 0, 0, GetImage.Size);

if (motionDetector.ProcessFrame(GetImage) > 1.02 f)
  pbDesktopFeed.Image = GetImage;
else
  pbDesktopFeed.Image = GetImage;

} catch (Exception ex) {}
}

However, I do plan to take consideration in using a ScreenCaptureScreen() to relay this image to AForge video player to improve the over performance of the framerate since the PB update is too slow.

I can't for the life of me figure out how to access the region from a tick thread which is calling a bgworker(). Here is the original code

private void t_processFrame_Tick(object sender, EventArgs e)
{
if (!_bw_frameProcessor.IsBusy)
{
_bw_frameProcessor.RunWorkerAsync();
}
}

private void _bw_frameProcessor_DoWork(object sender, DoWorkEventArgs e)
{
try
{
GetImage = new Bitmap(screen.Bounds.Width, screen.Bounds.Height);
g = Graphics.FromImage(GetImage);
g.CopyFromScreen(screen.Bounds.X, 0, 0, 0, GetImage.Size);

    pbDesktopFeed.Image = (Bitmap)GetImage;                           
    motionDetector.ProcessFrame((Bitmap)pbDesktopFeed.Image);
}
catch (Exception ex) { }

}

Its kind of frustrating because I have been sitting here for 3 days (I have a high tolerance of trying different variations before I burn myself out) trying to figure out why it works fine in Timer_Tick but not when Timer) Tick is running the Backgroundworker. My guess is that it is because of the Threads between the both. I have tried cloning the bitmap inside the background worker

GetImage = new Bitmap(screen.Bounds.Width, screen.Bounds.Height);
Bitmap clone = (Bitmap) GetImage.Clone()
g = Graphics.FromImage(clone);
g.CopyFromScreen(screen.Bounds.X, 0, 0, 0, clone.Size);
pbDesktopFeed.Image = (Bitmap)GetImage;
motionDetector.ProcessFrame((Bitmap)pbDesktopFeed.Image);

I have tried cloning the image using AForge:

GetImage = new Bitmap(screen.Bounds.Width, screen.Bounds.Height);
g = Graphics.FromImage(GetImage );
g.CopyFromScreen(screen.Bounds.X, 0, 0, 0, GetImage .Size);
pbDesktopFeed.Image = (Bitmap)GetImage;
motionDetector.ProcessFrame(AForge.Imaging.Image.Clone((Bitmap)pbDesktopFeed.Image));

This however, works fine when I drop it all into the Timer_Tick event.

private void t_processFrame_Tick(object sender, EventArgs e)
{
try
{
GetImage = new Bitmap(screen.Bounds.Width, screen.Bounds.Height);
g = Graphics.FromImage(GetImage);
g.CopyFromScreen(screen.Bounds.X, 0, 0, 0, GetImage.Size);

    pbDesktopFeed.Image = (Bitmap)GetImage;
    motionDetector.ProcessFrame((Bitmap)pbDesktopFeed.Image);
}
catch (Exception ex) { }

}

I've found a potential solution in replicating what I am looking for by using Accord VideoFileWrite to write the sequence of frames that bitmap creates, using the PictureBox as a "previewer" to show the height/width of what is being recorded. Is it possible to write VideoFileWrite into a memorystream and use AForges motion detection to read the memorystream or a buffer within the specific moment , rather than the read a file thats been written to the computer. Example Illustration

"Okaaay" like you understand my request? Or "Okaaay" like you're being a pompous-dick right now? I mean, I'll understand if you don't know the answer to the question, it's OK to not know everything. But, if you don't know, save me the ridicule and move on, your forum-troll level of insecurity is not required in this thread. Not everyone who comes in here is on your level, in fact majority of the people that come in here are have some level of knowledge in IT that doesn't equate to your standard of knowledge. That is why I am here, either help or don't help. Had you in fact read the thread, you would know that nothing of a 'still image' was mentioned, after all Videos are just layered images. Since my picturebox is technically showing a video of my desktop, rather than using Video File Writer is it possible to put these layers into a MemoryStream read it from there?

Correct, so in theory it could work since the picturebox is being replaced with a new layer/frame ever second that timer draws a new bitmap image? I have a picture box that draws the recording of my desktop

private void tmrImageUpdate_Tick(object sender, EventArgs e)
{

        var img = new Bitmap(this.Height, this.Width);
        var grph = Graphics.FromImage(img);
        grph.CopyFromScreen((Cursor.Position.X-(pbImageRelay.Height/2)),(Cursor.Position.Y-(pbImageRelay.Width / 2)), 0, 0, img.Size);
        pbImageRelay.Image = img;
    }

    private void Form1\_Load(object sender, EventArgs e)
    {
        Rectangle resolution = Screen.PrimaryScreen.Bounds;

        tmrImageUpdate.Tick += tmrImageUpdate\_Tick;
        tmrImageUpdate.Enabled = true;
        tmrImageUpdate.Start();
    }

I am trying to detect the motion in say a video player from the desktop, but within the picture box that is viewing on my desktop. Like a picture in a picture on a TV screen, except on PC.

Is it possible to detect motion from a picture box? I was looking at AForge for the motion detection class, but because the picture box is not exactly a video source, and currently what I have draws an image when a timer ticks every say 100ms to the box. Could it be possible to detect motion from the picture box? Or convert the realtime images drawn in a picture box to a video source for Realtime processing of motion?

The Form is a container for controls, so you cannot access it directly from another form/class especially when controls have private modifiers. Using access modifiers may still cause some issues. Its better to access the control using Controls class.

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

    private void btnStart\_Click(object sender, EventArgs e)
    {
        comboBox1.Items.Add("Combo Item");
    }
}

public class GetComboItem
{
    public GetComboItem()
    {
        ComboBox cmbItm = Application.OpenForms\["Form1"\].**Controls**.Find("comboBox1", true)\[0\] as ComboBox;            
        MessageBox.Show(cmbItm.Text);
    }
}

No it's cool, I think you read my message too fast before I could edit it, I would have loved to target the 444 but it only works on the 412

Really no target, but if any case, I will be using 4.1.2. But the app targets most mobile droids. But that screen is accessed from a mobile from swiping from the top edge down.

For example, the red bpi shortcut and the utorrent shortcut, I'm trying to replication that function but can't seem to find any content how to add those to the notification menu.

Like this image here: http://bit.ly/1AQOJB8[^] I can't seem to find any material online related to the topic. I am using Android studio as my ide.

Knowing I dont have the admin access what would be the viable method without seeming I am a threat to any system. If ICMP isnt going to work then how else would I go about converting the hostname into an IP using the best methods?

I managed to figure out why, my next question is, why is my code not returning the IP and saying the site site is in active, and also when it returns an IP I type that IP in the browser and it doesn't take me to the domain that its assigned to. why? I guess I could see this as a security prevention but how do I get the right IP from it?

I work for an ISP strictly for small business and minimal residential. We provide different services as well as web hosting. We have to convert web domains to an IP once a month from a list. I am trying to recreate an app in VB.net and it takes forever for ping result to come back as true or flase and when I transl;ate the host into an IP it doesnt get an IP for the host even though it exists. Here is a sample picture of my compiled app running: http://postimg.com/87000/what-86552.jpg[^] my code in vb.net:

Imports System
Imports System.Net
Imports System.IO

Public Class Form1
Dim reachable As Boolean = False
Dim IPEntry As IPHostEntry
Dim ReadAllLinesArray() As String

Public Function IsDestinationRechable(ByVal hostOrAddress As String)
    Try
        reachable = My.Computer.Network.Ping(hostOrAddress)
    Catch pingException As System.Net.NetworkInformation.PingException
    Catch genericNetworkException As System.Net.NetworkInformation.NetworkInformationException
        'Fail silently and return false
    End Try
    Return reachable
End Function

Public Sub GetPingAndIPv4()
    Try

        For Each s As String In ReadAllLinesArray
            Try
                IPEntry = Dns.GetHostByName(s)
                If IsDestinationRechable(IPEntry.AddressList(0).ToString) = True Then
                    Dim lsv As ListViewItem = lsvHostItemList.Items.Add(s)
                    lsv.SubItems.Add(IPEntry.AddressList(0).ToString)
                    lsv.SubItems.Add(IsDestinationRechable(reachable))
                   
                    tssProgressBar.PerformStep()
                Else
                    Dim lsv As ListViewItem = lsvHostItemList.Items.Add(s)
                    lsv.SubItems.Add("n/a")
                    lsv.SubItems.Add(IsDestinationRechable(reachable))
                    tssProgressBar.PerformStep()
                End If
            Catch ex As Exception
            End Try
        Next

    Catch ex As Exception

    End Try
End Sub

Private Sub OpenToolStripMenuItem\_Click(sender As Object, e As EventArgs) Handles OpenToolStripMenuItem.Click
    If OpenOldHostsFile.ShowDialog = Windows.Forms.DialogResult.OK Then

I have a teacher who gave us a compiled application. He did not provide us the code. We have to generate the code in our head and write it out. It must act like his application in every possible way. I have it written out but for some reason when I type in the value of two(2) pieces the two(2) isn't calculated yet every other number I type calculates just fine. Why? two(2) falls within range of 1-199 so its price would be calculated as rangeA * two(2) pieces = price for two, but no result is returned, my text does not display in the textbox either.

Dim priceArrayElements(20) As Decimal ' Store Prices calculated, 21 count
Dim pieceArrayElements(20) As Integer ' Store Pieces counted, 21 count

Dim addedPieces ' Total of all Piece elements added together
Dim totalAveragePieces ' Average of Piece elements added together / element count

Dim addedPrices As Decimal ' Total of all price elements added together
Dim totalAveragePrices As Decimal ' Average of Price elements added together / element count

Dim elementCounter As Decimal ' Global Counter for both arrays

Dim rangeA As Decimal = 0.5  ' Price applies to range   1 - 199
Dim rangeB As Decimal = 0.55 ' Price applies to range 200 - 399
Dim rangeC As Decimal = 0.6  ' Price applies to range 400 - 599
Dim rangeD As Decimal = 0.65 ' Price applies to range 600 - >

Private Sub Button1\_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Select Case False
        Case IsNumeric(txtPieces.Text)
            MessageBox.Show("Pieces completed must be numeric.", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Information)
            txtPieces.Text = ""

        Case Not IsNumeric(txtName.Text)
            MessageBox.Show("Name is required.", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Information)
            txtName.Text = ""

        Case Else

            Select Case txtPieces.Text
                Case 1 To 199
                    Try
                        For i As Integer = 0 To priceArrayElements.Length
                            priceArrayElements(i) = (Decimal.Parse(txtPieces.Text) \* rangeA)
                            txtEarned.Text = FormatCurrency(priceArrayElements(i).ToString())
                        Next
                    Catch ex As Exception
                        'Supress Message
                    End Try

I have a a multi-purpose application that I am working with. 3 Different forms, one form has log in validation and the another has DateTimePickers. I threw a button on the parent form just to compare saved settings, when I set a Time in DTP say for 11:30 PM and the close that form and go back to the parent form, the DTP Value that I saved doesn't actually get saved till I close my application and re-open it, so I can't compare my alarm times unless I close the application and re-open it. How can I get the form to refresh to the most updated variable that is being stored in my settings?

I am trying to add a range of arrays to al istview from 3 files. My arrays are decalred as:

string[] sn = File.ReadAllLines("serverList.txt");
string[] sl = File.ReadAllLines("serverLocation.txt");
string[] st = File.ReadAllLines("serverType.txt");

But when I use:

ListViewItem lvi = new ListViewItem();
lvi = lv.Items.AddRange(sn);
lvi.SubItems.AddRange(sl);
lvi.SubItems.AddRange(st);

Its tells me the addrange taked invalid arguments, why?

I have created an array list to save my listview settings but cannot seem to figure out how to save it to an a preset setting in my properties. This is what I have so far.

List list;
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
list = new List();
foreach (ListViewItem lvi in lv.Items)
{
string[] values = new string[] { lvi.Text, lvi.SubItems[1].Text, lvi.SubItems[2].Text, lvi.SubItems[3].Text };
list.Add(values);

        }
    }

lv.SelectedItems[0].ToString() Dont forget to specify the position of the columns using [0] even if you only have one columns the [0] is still used. Then so on if you have more than one columns [1],[2] etc

modified on Tuesday, August 23, 2011 12:35 PM

I think I may have sort of found a solution or work around. I could use a webBrowser control in a form that redirects only to that site and then when it checks the 'FEATURE_NATIVE_DOCUMENT_MODE' then it would load the IE7 standards mode by checking the value of ' MyApplication.exe"=dword:11170" ' This is the only thing I could think of after reading the http://blogs.msdn.com/b/ie/archive/2008/03/18/webbrowser-control-rendering-modes-in-ie8.aspx[^]