I am trying to download yahoo's csv files from the web and then reading and storing the data into an array or database (for plotting).So far this is what I have:
Dim txtRemoteFile As String = "http://ichart.finance.yahoo.com/table.csv?s=" & sStock & "&d=11&e=30&f=2009&g=d&a=10&b=18&c=1999&ignore=.csv"
Dim txtLocalFile = "C:UsersXXXDocumentsvisual studio 2010ProjectsWindowsApplication2WindowsApplication2inDebug" & sStock & ".csv"
Me.Cursor = Cursors.WaitCursor
[code]...
So basically, i'm downloading the csv to the local directory, and THEN reading it, and then storing it into an array, and outputting the data into a textbox in my VB form. want to do, is to download that URL to a database or array, where I can plot it in my VB from.So:
1) How to download directly to database or array?
2) Which one is better? to download to database or array for plotting?
When a user clicks on the button called "save" on a webpage opened in webbrowser1, it downloads a text document to the hard drive and explorer asks user is asked where it should be saved. How can I intercept this and directly download the textfile into a richtextbox without triggering the "save file to disk" alert ?Maybe an IDownloadManager implementation?
I just have a few problems regarding my application, any suggestions would be great, thanks. (I'm quite new to this stuff, making an application(s) for fun haha.)
1) I'm planning to distribute this application, but the problem is if I send it to another computer the user will most likely not be "Home2" and this code wouldn't work right?.
Code: If (File.Exists("C:Documents and SettingsHome2Start MenuProgramsStartupexample.exe")) = True Then File.SetAttributes("C:Documents and SettingsHome2Start MenuProgramsStartupexample.exe", attribute) ElseIf (File.Exists("C:Documents and SettingsHome2Start MenuProgramsStartupexample.exe")) = False Then End If
I have an email creator that needs to extract the emails created from the html page, display the accounts in a richtextbox1 & then save the accounts as a .txt file on my system. How would I go about doing this? Doe anyone have a great code sample??
how to assign a 1-dimensional array value I get from a function directly into an element in a 2-dimensional array. An example would be
Dim Results(7)() as DoubleResults(0) = myFunction() ' returns an array with 5 doubles What is the correct syntax for this, if any? I'm still having a bit of difficulty switching over from Python arrays, which work a lot better, it seems.
I have an array which originally was a Variant array in VB6. Example code in VB6:
ListBoxDrawings.List(X1, Y1) = myArray(X2, Y2) myArray(A, B) = ListBoxDrawings.List(I, C)
After running it through ArtinSoft's VBUC, its values are handled using GetValue & SetValue.Example code in VB.NET: (ignore conversion to ListView)
ListViewDrawings.Items(X1).SubItems(Y1).Text = CStr(myArray.GetValue(X2, Y2)) myArray.SetValue(ListViewDrawings.Items(I).SubItems(C).Text, A, B)
Since VB.NET doesn't do Variants, I figured out that the array should be typed as a 2D String Array. It seems like there's no reason to use GetValue/SetValue, as the former returns an Object and the latter takes one. This means that I'd have to cast the returned object as a String (Cstr) if I wanted to assign it to a variable, which seems like a pointless extra step that might introduce errors. Also, since the method has lots of overloads, the code might not be as clear. Is there any advantage to using SetValue / GetValue, or should I just consider that an artifact of VBUC converting a Variant, and access the array directly like the original code did?
VB.NET without Get/Set methods:
ListViewDrawings.Items(X1).SubItems(Y1).Text = myArray(X2, Y2) myArray(A, B) = ListViewDrawings.Items(I).SubItems(C).Text
I was planning on using very similar code to the following to export to excel quickly[url]...
However, the data that I'm exporting is rather large and I find it unnecessary to grab a dataset from the sproc, convert it to a multidimensional array of objects and then export to Excel. There are two main reasons this is unnecessary. 1) It takes time to transfer that data from the dataset to the array. 2) There are then two instances of the data, one in the dataset and one in the array. Therefore, I would rather directly insert the sproc results into the array of objects and bypass the dataset altogether. I can't do this unless I know how many rows I'm getting back from the sproc in order to declare the array's size beforehand. [code]...
I retrieve from my server the byte data for a file that the user wishes to download. I always know what the filename and extension is, but what I don't know is how to start downloading the byte data and in the proper file format.Just to clarify, I already retrieve the data in byte format in code, I just need to download it as the proper file type which is also known. I'm keeping the URL to the file hidden at all times so it's never exposed.
I usually download file using following code:My.Computer.Network.DownloadFile("url of the file","filepath to save the file")But recently I encountered a site that only allow file download if you click it from its site and not via direct downloading from vb.net code.How to download file from http server that requires a referral before allowing the download?
was wondering about making a download program cant seem to find much on ie a download manager or something like flashget could someone point me in the right direction
I want to download thousands of files from the web and save them locally. What is the most efficient way? It is important the failures timeout within 10 seconds.
Is there a better way to stream one stream into another? Maybe a smaller buffer, like 1024 bytes at a time, is more efficient for large files?
Dim w_req As System.Net.HttpWebRequest = CType(System.Net.HttpWebRequest.Create("http://blah.blah.blah/blah.html"), System.Net.HttpWebRequest)
I'm courtneyI'm working on a Web Browser (Yeah I know, so 2000 years ago)I'm attempting to launch my OWN download manager (refered to as downManager in my code) in the WebBrowser.FileDownload event, via determination of the WebBrowser.DocumentType.My current code is as follows: CODE
I have created a application in vb.net. I am using Web Browser control in it.With this Web Browser control I open an URL and tries to Download something, it will populates an dialog for "File Download" to Open/Save/Cancel for the file..I am downloading the .ZIP file, and it will not show the checkbox for Automatically Do.Is there any way to perform the Download operation at the backend, means it will not ask me for such options.
We have an assignment to create some XML outputs from data in SAP R/3. We are using SAP .NET Connector, for doing this. The problem we are facing is that there are some fields which are not exposed by any standard BAPI. Unfortunately we cannot create customized BAPI on this particular system.
We are therefore restricted to whatever standard BAPI are available. I have seen on internet that tools like ERPConnect can provide access to tables directly using RFC. How can this be performed in VB, without purchasing any such tool, using or without using .NET Connector.
I've been tasked with redeveloping a tool that accesses mailboxes in Exchange, extracts the new emails (and their metadata) and then saves the info in DB. Even a brief perusal of the code shows that it could use some serious re-writing (no use of DirectoryServices for example).
However, from what I can make out the code loads the mailbox being accessed into Outlook and iterates through the mails. Is there a way to access the emails directly? I should point out that, unfortunately, we do not have access to the Exchange servers. They are managed by another department.
Public Event Closing(sender As Object, e As System.EventArgs)' is an event, and cannot be called directly. Use a 'RaiseEvent' statement to raise an event.
how I can simply dynamically edit a cell in a gridview. i.e. Just click on it and type, and post the changes when I lose focus to the gridview?I have tried defining a cell as a template control (textbox) and get it to display and let me type in, but it does nothing beyond that. I cannpt even get the default value from the underlying dataset into that cell.
I have a program needs to print directly to a Zebra TLP 2844-Z barcode printer.
I tried the codes in [url]... but an error occurred when i run it, as follows:
A call to PInvoke function 'test!test.RawPrinterHelper::OpenPrinter' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
May I ask if any one has any other idea of printing directly to printer in VB2005?
I have been trying to accomplish what i thought was a fairly straightfoward task of tying a progress bar to a timer. I have a simple VB app that rotates between windows for a kiosk-type application. I would like to have a progress bar that counts down until the next window will rotate. So i thought it would be taking the total value of the timer and assigning that as the value of the progress bar, then update the progress bar while the timer is going so it can tick down to the end, then restart
Instead of having 1 exe file running..everything. I'd like to split it up, and allow to have multiple things running.Now, to help fight piracy, etc. In this main program, will verify an account, etc. Then if they have the program installed, cool. Allow them to run it
Using MODI dll I can obtain the text from a image saved on the HD:
[Code]...
my goal is to obtain the OCR directly from a image stored in the Clipboard... but everything I write in the miDoc.Create(Clipboard......) code I receive the message that it's not a String what to write instead of ("c:example.tif") to read the image directly from the Clipboard?
i can may do this in HTMl but i think its better to do it in PDF right away otherwise give me a link or help to make it into HTML and then to PDF if someone can help that will be awesome
I have an array of people stored in a custom structure array... how can i copy this array to a temp array so that the temp array has all the same values as the original custom array?
this is what i want to do. I have a class library project into my solution. Into it i have a class. I want that class to be instantiated as soon as the solution starts. So it can be accesible from the other projects in the solution like this: Namespace.InstanceOfTheForm.Property Is there any way to do that? or something close to that?
