VS 2008 Detecting Invalid Images?
Jan 12, 2010
I have a program that parses INI files (yes yes, I know, but I'm stuck with using them, not my own request), and it downloads external images (if the INI contains the path) to the program and cache's them.
Recently, I've run into a snag with the system. Most of the images use Imageshack for storage, but one of them has suddenly 404'd, and whenever I set it to the picturebox to the downloaded image, I get an out of memory error rather quickly (and the file itself is 1kb).
I guess I need to implement a checking system offline to find out if the image is actually an image or just a '404' text...but is there a way to not have to implement this clientside, and have it be checked when I download it?
[Code]...
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Dec 21, 2009
i am generating a report in vb.net using itextsharp. sometimes the entire report does not fit on one page and i need to know when itextsharp is adding a page to the document.
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Jul 15, 2009
I'm using WMI code and VB 2008 to see NIC status. So far the queries are working, but the methods aren't. For example, I'm trying to set a network card to use DHCP, I get invalid function with this code:
Dim classInstance As New ManagementObject("rootCIMV2", "Win32_NetworkAdapterConfiguration.Index='7'", Nothing)
Dim outParams As ManagementBaseObject = classInstance.InvokeMethod("EnableDHCP", Nothing, Nothing)
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Feb 11, 2009
The app i am working on is for creating theme for the iPod touch... It has to deal with LOTS of images (100's potentially) There will be the set of default images, and then the user created replacement images. I started loading all the defaults into a resx file... thinking then I could just pull them out. now that I started setting the default, this sucks! lol the app will do this, on load it will set all the images (variables) to the resx images then when a theme is loaded, it will replace the default with the user image (if the user img exists) otherwise, the default stays. Then the "screen" is drawn to show the user. so, here is just the images to build the wallpaper, dock, and status bar...
[Code]...
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Jan 3, 2012
I need this for my program. There is "add images" button where you can load multiple images and those images should be show on listview after loading.I have been trying to make this but could not get it work.
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Nov 3, 2011
My console errors out when I enter anything other than a number or operators in the designated (input). I stink at this stuff but I have been t this for about 8 hrs. still not there. I have included a text file for the task at hand
[Code]...
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Jun 2, 2010
I'm getting Invalid column name 'CHARLES'. Invalid column name 'CHARLYN'. Invalid column name 'SMITH'.what's wrong with my code, it's been a long time since I used SQL dataset. I'm into LINQ but I'm having problems with this kind of LINQ query so I'm reverting to SQL dataset.here's my code:
'Set up a data set command object.
Dim sSelectColumn As String = ("SELECT * FROM tblScanned WHERE LastName=" & sLastName & " AND FirstName =" & sFirstName & " AND MiddleName =" & sMiddleName)[code].....
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Nov 24, 2009
how to detect when the "DEL" key has been pressed in a VB 2008 windows form?
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Jan 13, 2010
I need to detect if any version of the .NET framework is installed as we are deploying a .NET 2.0 app via logon script (ie XCOPY deployment) to all PCs in our network. The .NET app will be set to start when a user logs in, so we need to determine if .NET 2.0 (or higher) is installed before we deploy the app otherwise the user will get an error each time they log in. Is there any sure fire way to detect .NET via vbscript or batch file? All of the results I have found on google don't seem to be that reliable.
I have recently written a program that detects installed programs in the same way that Add/Remove Programs does but the problem with this is that even Add/Remove Programs does not seem to show the .NET framework on all PCs that have got it installed (like my home PC for example, definitely has .NET 3.5 installed but its not in the Add/Remove Programs list).
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May 9, 2009
I want to create an If End statement like so...
If (webBrowser is finished loading) then
do some stuff
End If
and it needs be within Private Sub tags so it can't be
Private Sub webbrowser1_documentcompleted
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Sep 7, 2009
I need to know a way to detect if the mouse has been clicked anywhere on the screen. So as long the program I am making is open when the user clicks my program needs to do something. Please let me know as soon as possible if this is possible and how you do it.
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Apr 7, 2009
how can i detect mouseclick outside the form (for example desktop)
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Mar 17, 2011
I have been playing about with the WM_SYSCOMMAND Message and more specifically with the SC_SCREENSAVE parameter which is a cool way to pick up when the screen saver is activated as seen below:[code] What I can't seem to find is if there is a way to detect when the screen saver comes off.
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Jun 14, 2012
I've come across involving a PictureBox.I am trying to create a quick Paint-like application, but I want something to happen in it. I want it so that when you draw or have drawn in a certain area of the PictureBox, you trigger events to happen (but they must only trigger once. This doesn't mean only one event can happen, it's just that each event can only happen once). How would this be possible to implement in my code I have now?[code]
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Apr 11, 2010
While I print or preview a large bitmap, VB.NET show a small window with a cancel button.
I do I detect that the CANCEL button was pressed, so I can abort my PrintPage event before the current page is completely rendered?
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Jul 27, 2011
Using .NET connector: [URL] A field is set in MySQL as:
decimal(6) zerofill not null
How can the "zerofill" flag be detected in VB?
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Apr 1, 2009
I can detect the type of mouse cursor (normal, hand etc) inside the form but i need to detect it when the cursor is outside the form.
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Nov 25, 2011
Im new to programming.I work for a research in Sri Lanka.In our research data is collected on windows mobile devices.I am the person who connects the devices(Known as JUNOs) and copy the data to the hard drive.But when Im not around others should copy the data.But they havent got IT knowledge.I want to create a simple software which detects the JUNOs when connected,show a message that a device is connected(Ex : JUNO1 is now connected),and then a button to copy and paste data to hard disk.(Ex: Press copy button to copy data)
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Apr 6, 2009
3 things , 1. how can i detect all the existing web browsers installed on the computer (IE , Mozilla ect'...) and put it in a combobox or something like that. 2. after i detect and select a browser , how do i launch that specific one? 3. how can i know which one is the default browser
should i see if the browser file exists ? ( IE7.exe, ect'....) or is there a more simple way ?
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Jan 21, 2010
I have a listview, and when you right click, it shows some things. I need to make it see if an item on the listview is selected. Is there a way to do this?
Like, this doesn't work, but in code it would be like
If listview1.HasItemSelected = true then'code here end if
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May 22, 2011
Basically i want to send a created file over a local network via FTP. If the username/password/IP address is incorrect the application just crashes.
Is there anyway i can detect if the credentials are correct? etc.
Code I'm using to upload the created file is;
My.Computer.Network.UploadFile("C:lini.ftp", "ftp://" + ftpUser.Text + ":" + ftpPass.Text + "@" + ftpIP.Text + ":21/Usb0/launch.ini")
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Sep 17, 2009
I would like the text in a button to display "hello" when it is first clicked, and "world" when it is clicked again. But I don't know how to write code to detect the second click.
==========================================================
Private Sub StartStopButton_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles StartStopButton.MouseClick
Button1.Text = "Hello"
[code]....
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May 1, 2010
I've been using 'GetScrollInfo' to find the position of the scrollbar on a ListView and I can detect when it hits the bottom of the list. Is there anyway I can raise an event when the scrollbar changes? At the moment I have it working by using a timer but I would rather if possible create an event to fire my routine.
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Feb 27, 2010
I have a problem in detecting the 30 minutes interval in time scheduling like for example i have a combobox(starting_time) and combobox2(endtime) and I select there 9:30-10:00 it has 30 minutes I want to show a message box that I should be 1 hour.
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Oct 13, 2009
Trying to run the following
treeval = e.Node.Text
Dim strVal As String = New String("LDAP://10.22.67.21:389/OU=Linkway,OU=Desktops,OU=Devices,DC=domain,DC=suffix")
Dim domain As New DirectoryEntry(strVal & "'DOMAINusername', 'password'")
[code]....
I get an error saying "Invalid dn syntax"
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Mar 27, 2010
I'm writing a program and it's got a textbox for the user to enter values. Since the textbox text property should only be a "number", my program need to detect invalid charaters like "*/&()$" and tell the user to only enter a number. Does anyone have an idea how to do that?
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Sep 9, 2011
where I was encrypting the string and passing it to another web page to decrypt and get the ids to be displayed as a pdf back to the page. I kept getting an invalid "Invalid length for a Base-64 char array". It was then I realised that the string was getting truncated and that the IE Explorer had a size limit for the number of charaters being passes as a querystring.So I think I need to go the route of posting it.But not sure how to go about it.
Private Sub GetReport()
Try
Dim hawbs As String = String.Empty[code]....
The retrieve document then does: the decrpytion gets the data(ids) and pulls the pdfs.
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Mar 20, 2009
Before I explain, the connection string I am trying to use is copied directly from elsewhere in the application that has always worked and still does.
Provider=Microsoft.Jet.OLEDB.4.0;
Data Source=|DataDirectory|cdb.rmd;
Persist Security Info=False;
My problem is that no matter if I go to "Server Explorer", "Data Sources", or any other option it will not let me add a datasource/database. Up to this point I have done everything at runtime but now due to reporting issues I need to create a dataset in design view.
This is what happens:
I click "Add connection..."
I choose "Microsoft Access Database File" (Which it is...)
I click "Continue"
Form shows up with a field for my connection string, which I insert (shown above).
I click "Ok"
I get the following error:
Format of the initialization string does not conform to specification starting at index 0.
The "Test Connection" button is apparently useless as the connection passes even if the field is blank.
I have attempted reducing the connection string to only what is absolutely necessary.
I have copied the string directly from connectionstrings.com replacing my filename.
I have renamed the file to an .mdb extension.
I have used the full path from C: all the way to the file.
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Aug 13, 2009
I have declared two variables as strings strDob and strCurrentDate, Both Variables are for storing dates. StrDob is for storing Date of Birth and second is for Present date. and am executing the following code
If DateValue(strDOB) > DateValue(Date.Today) Then
and getting the error like
Invalid CastException was unhandled
Conversion from string "19/09/1987" to type 'Date' is not valid.
Error in the following code also:
iAge = (CInt(Abs(DateDiff("d", strCurrentDate, strDOB)) / 365))
Invalid CastException was unhandled
Argument 'Date1' cannot be converted to type 'Date'.
Here I need both variables as string itself. because the Dateofbirth is getting from three comboboxes.
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Dec 10, 2009
I am running the same program on two workstations. One reveals no errors while the other shows a "COM exception error: invalid parameter." The offending line of code is shown below.Is there an explanation for the inconsistency?
.SeriesCollection(iRet).Name = "=""Q" & Str(iRet) & """"
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