Multithreading And Status Bar - Simple "tasks List"
Apr 4, 2011
Haven't played with .NET for a while thought I would build myself a simple "tasks list" for work basically to "brush off the dust". Windows Form + MySQL
Now on form load I wanted the program to automatically try and connect to the DB. No problem except the DB connection always delayed the program launching by roughly 5 seconds. So I figured a separate thread call to take the stress from the form ... and now I'm floundering ....
CODE:
simple enough on form load display the dynamic text to the status bar label named dbStatus. Than start a new thread to the address of my database connection function. This works fine, i can even throw a msgbox() inside the function and can be told its connected. But in that same function I add the line
CODE:
Commented lines were me trying to reference it a "different" way ... but every time I run this the label never gets updated, when i step through set function the 'InvokeRequired' is either nothing or false.
But of course directly trying to access the text attribute of the label doesn't work but strangely enough doesn't throw a cross thread error either.
Hence my current dilemma ... I can directly call db.ConnectDatabase and everything works as intended .. when I throw the function into a separate thread my status label never gets updated, nor am I warned about any cross thread operations.
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Mar 19, 2010
Ineed a VBS script that removes all scheduled tasks which start with a specific string.
For example, delete all scheduled tasks which start with "My Application Tasks..."
I wanna use this VBS script in my application uninstaller so all tasks created by my application are removed at the uninstall time, however am not familiar with VBS.
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Mar 15, 2011
I'm trying to get this code to save the list when a new website is added, how do I get a list of collections to save a link that I designate into the list?
Private Sub ToolStripButton8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton8.Click
ToolStripComboBox2.Items.Add(WebBrowser1.Url)
[code].....
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Jul 2, 2011
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I have the following multithreading function to implement threads fetching from a list of urls to parse content. The code was suggested by a user and I just want to know if this is an efficient way of implementing what I need to do. I am running the code now and getting errors on all functions that worked fine doing single thread.for example now for the list that I use to check visited urls; I am getting the 'argumentoutofrangeexception - capacity was less than the current size'/Does everything now need to be synchronized?
Dim startwatch As New Stopwatch
Dim elapsedTime As Long = 0
Dim urlCompleteList As String = String.Empty
[code]...
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Sep 1, 2009
Here is my insert statement:
[Code]...
Now for a succesful insertion i want to notify the user about a successful save operation.....i.e,i want to display a message "Successful Save Operation"to the user. How to do this using the Status Strip?
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Jun 6, 2012
I trying to do what seems to be a simple thing but I'm having problems. The answers I find aren't working. I'm still getting casting exceptions:
Dim query = (From l In dePhl.cv_phil Where l.batch = strMmddyyyy
Select l.zipfile.Distinct)
Dim objFileList As List(Of String) = query.ToList() 'Error
[Code]....
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Jul 27, 2009
I have a form containing a checkedlistbox, I want to be able to do a simple comparison between the checked status before and after to see if there has been any change. I have a copy of the "before" version of the checkedlist box and I thought I could just compare the two CheckedItems but it always thinks they are different, I could iterate through the entire checkedlistbox but I thought there would be an easier way.
[Code]
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Mar 20, 2009
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He is my code for the displaying staus text.
Private Sub webBrowser1_StatusTextChanged( _
ByVal sender As Object, ByVal e As EventArgs) _
Handles webBrowser1.StatusTextChanged
[Code]...
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Description
Price
Stock
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<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="Edit" Text="Edit">
</asp:LinkButton>
[code].....
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Jan 24, 2010
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In one thread I'll be adding items to List1(Of Object1), and processing them, and adding the results to List2(Of Object2), however I need to be able from other threads to look at the list and say only give me the items where Integer = (my thread ID), is this possible? Any help, or even links to information that would be relevant to this request would be helpful?
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Jun 10, 2011
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Browsers:
Private Sub btn_Email_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_Email.Click
'Load Action
Dim SavedEmailObj As Storage
[code].....
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Jan 24, 2012
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Ineed a VBS script that removes all scheduled tasks which start with a specific string.For example, delete all scheduled tasks which start with "My Application Tasks..."I wanna use this VBS script in my application uninstaller so all tasks created by my application are removed at the uninstall time, however am not familiar with VBS.
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Dim i As Integer
Dim objExcel As New Excel.Application
Dim objWorkbook As Excel.Workbook
objExcel.Workbooks.Add()
[code]....
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vb.net
Set ie = CreateObject("internetexplorer.Application")
Dim s As String[code]....
After this the page has been logged in. Now to proceed further i have to click a "image" object.
1) I tried qualifying the image like ie.Document..........item("img1").click this doesn't work
2) I tried calling the javascript function directly
ie.Document.all.Item("frame1").Document.parentwindow.execScript "JS_WGorUsers (funcname)", "javascript"
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