Backgroundworker And Delegate (center Text)?
Feb 26, 2012
I have a BackgroundWorker and using a delegate to update an UI on a different thread. Everything is working except the "lblInfo.Left = (Me.Width / 3) - (lblInfo.Width / 4)".I need this line since it allows me to center the text on the UI as I have several Subroutines and they all have various lengths in text. pass the lblInfo.Left = (Me.Width / 3) - (lblInfo.Width / 4) from the delegate so I don't get a IllegalCrossThread.
Delegate Sub SetLabelTextInvoker(ByVal lblInfo As Label, ByVal Text As String)
Sub SetLabelText(ByVal lblInfo As Label, ByVal Text As String)
If lblInfo.InvokeRequired = True Then
[code]....
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Jan 30, 2010
from the documentation we have this: Multicast Delegate: Represents a multicast delegate; that is, a delegate that can have more than one element in its invocation list.
so am i right to say that Multicast delegate is no different from a normal delegate other than the fact that it has arguments. so System.Action is a 'normal' delegate whereas System.Action(T)(Byval obj as T) is a multicast delegate?
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Feb 9, 2010
I've created a Delegate that I intend to call Async.
[Code]...
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Jun 1, 2010
Code:
Public Class SendPings
Shared Sub New()
AddHandler Post.Saved, AddressOf Post_Saved[code].....
I get a error" Method 'Private Shared Sub Ping(item As BlogEngine.Core.IPublishable, itemUrl As System.Uri)' does not have a signature compatible with delegate 'Delegate Sub WaitCallback(state As Object)'.
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Jan 3, 2012
When I call this Messagebox, is it possible to center the Messagebox on the parent form rather than centering it on the center of the screen?
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Jun 11, 2012
i found this video today and its a simple vb game but made me wonder how they kept the charater centered during movement.url...Anyone have a simple snippet to demostrate how they made a larger resulution then vewable and kept the picturebox centered and only moved the viewable area?
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Aug 20, 2009
is it possible to center text in a msgbox in vb.net? (similar to the < center> in html) this is not centering itself:
[Code]...
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Nov 27, 2011
I was wondering if there was a way to CENTER text in a ListBox. I tired to find any settings or properties that allows me to set the text and couldn't see. is there any way for this>
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Jun 10, 2012
I would like to center the text that appears in a combobox.
What I enter the code or the procedure?
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May 17, 2012
I am having problems trying to center some text. I created a printdocument and it has a company name and title and then other information I have the information fine but I wanted to center the company name [code]I know I have to get the width of the page then divide it by two and after that find out how long my text is then subtract that so it still prints center screen. Pretty much right now it prints out and runs off the right side of the page.But what I would like it to do is print in the Center but have equal margins on the sides of the page still.Just like clicking Center allignment on a word doc.
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Feb 18, 2010
I know i've made a few posts previously on this, but none have fully worked. I now have my program doing everything I need it to do, except having the ability to display the text to the centre of the screen. It needs to be able to perform the same functionality it does on the form but without the form being there (e.g. the letter disappearing after being pressed)
[Code]...
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May 9, 2012
I am having problems trying to center some text. I created a printdocument and it has a company name and title and then other information I have the information fine but I wanted to center the company name and I can't seem to do it correctly here is what I have
I originally tried:Convert.ToSingle((e.PageBounds.Width / 2) - (szF.Width / 2))
But it would print out wrong it would start in the middle of the document and print everything to the right making it go way to the right and off the page. Since then I changed it to what is in the code block but its still not right
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Jun 2, 2011
Is there a way to set the radio button text to center, I want to show it on the top of radiobutton hole?
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Feb 6, 2011
i am using the DrawString Method to insert a Text on an Image. But i am not able to center it on the image. How could i do that? Thats my code:
Dim g As Graphics = Graphics.FromImage(destBitmap)
g.InterpolationMode = Drawing2D.InterpolationMode.HighQualityBicubic
g.PixelOffsetMode = Drawing2D.PixelOffsetMode.HighQuality
[code]....
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Aug 18, 2009
Does anyone have any working examples of centering text in a Datagridview column? I tried what I thought was a no-brainer, and it simply does not work. (I don't have the code handy here).
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Jul 15, 2011
I have a Listview and each ListviewItem has an image with a height of 90 pixels. This means that the Listview rows are also about 90 pixels high, enough room to show the subitems text word wrapped.
The only way to wordwrap text is to draw it myself, as far as I know, because the Listview has no property for that. I'm using the code below, which works fine, except I'm having some problems with centering the text vertically.
[Code]...
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Nov 9, 2006
I want to align the text that is in cell A1 to the Center of the Cell.what am I doing wrong and how do I correct the issue?
excel.Range("A1", "I1").MergeCells = True
excel.Range("A1").Font.Bold = True
'align the text in the center of the merged cell
excel.Range("A1").HorizontalAlignment = HorizontalAlignment.Center
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Jan 25, 2012
In my Visual Basic 2010 project, I want to send a series of plain .txt files to somewhat of a database where they can be stored. The best way I can describe it is like an email system with attachments. The information that is being sent is not sensitive information therefore security doesn't matter, I would like to receive it and add it into a database. Is there any place where I can send these text files to in an email(attachment) like fashion but without needing to enter credentials first? If so, could you please assist me or guide me in the right direction?Sending the information through email would be swell, however this would require the user to first submit their email information which defeats the purpose of the what I'm trying to do.
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Apr 17, 2011
I'm building a simple WFA with a label that changes and gives instructions to the user as they work their way through the program. Is there a way to programmatically re-center the label horizontally after each text change so that the label is always centered in the form regardless of what text is present?
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Jul 10, 2011
In VB, to do a newline feed its VbCrLf, but to do text format - BOLD and ALIGNMENT (Right, Left, Center)....how?
This is my code that I will use for printing..
1) I want to make Textbox1.text and textbox2.text in BOLD text format and in center alignment that will output to
My printout.. Because the output is always in align left.
CODE:
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Aug 23, 2009
I'm trying to simply center the label text in the middle of my program.I put the label control in the center of my form. It starts out blank. Then, it receives input from the return values of MySQL commands being sent out to a server.When it receives the message, it displays like this:
|-------->
.. with the "|" being where the label starts.I'd like it to center the text like this:
<-----|----->
Is this possible. Hopefully I explained it clearly. I had no success with the text align property or modifying the anchor property.
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Mar 24, 2009
I assume that this will be an easy one for you guys. I have never dabbled with drawing in VB.NET. I have searched the forum and Google already, but have turned up nothing to help me. Here is my problem. I have an image that is in an image box. I would like to draw a string of text on it, centered vertically and horizontally. Here is what I am using to draw the text.
[Code]...
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Dec 14, 2009
in my button click event i ececure
If BackgroundWorker4.IsBusy Then
BackgroundWorker1.CancelAsync()
End If[code]....
after proceess completed if press the button again.i got the following error msg
This BackgroundWorker is currently busy and cannot run multiple tasks concurrently.
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Mar 26, 2010
How would you create and use a delegate to update the text of the main form from the DoWork event of a backgoundWorker?
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Jun 13, 2011
have a formthat hasa BackgroundWorker,on the do_work event i exe an SP:
Dim result As IAsyncResult = cmd.BeginExecuteNonQuery()
Dim rowCount As Integer = cmd.EndExecuteNonQuery(result)
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Apr 3, 2010
How to Use of Backgroundworker while open a large text file
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Mar 23, 2010
I am trying to write a VB.NET alternative to a C# anonymous function.I wish to call Threading.SynchronizationContext.Current.Send which expects a delegate of type Threading.SendOrPostCallback to be passed to it. The background is here, but because I wish to both pass in a string to MessageBox.Show and also capture the DialogResult I need to define another delegate within. I am struggling with the VB.NET syntax, both from the traditional delegate style, and lambda functions.My go at the traditional syntax is below, but I have gut feeling it should be much simpler than this:
Private Sub CollectMesssageBoxResultFromUserAsDelegate(ByVal messageToShow As String, ByRef wasCanceled As Boolean)
wasCanceled = False
[code].....
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Nov 14, 2011
I tried to update the button text on a form from a backgroundworker.do_work event, and it failed, with the usual cross-thread exception message.However, by pure chance, I also tried to update text in a system.windows.form.toolstripstatuslabel also from this backgroundworker.do_work event, and it DOES work. Question: why is this? Is it perhaps because theres some kind of implicit shared behaviour with system.windows.form.toolstripstatuslabel?
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Apr 2, 2012
i'm in the need to start a backgroundworker inside another one.Now...The first one BGW starts a for cycle, and inside this one there is the second BGW that has to upload an image to a server.The trouble is that, the progress event and the complete event of the internal BGW are never called.
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Apr 22, 2009
While reading this threadthe code sample there came from MSDN, which was used to demonstrate the use of a delegate. I know what Delegates are. And I know how they work when it comes to things like crossing threads and even sinks.... how ever, the sample given is a simplecontrived example, and I'm wondering why/when would I use a delegate in this situation? Or in any situation? In my head, it seems it would have been easier/cleaner to call the function pointed to directly...
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