I am trying to extract whichever number is next to a=. I hardwired a value of 1000 for testing purposes.I keep getting an error saying Index and length must refer to a location within the string.Parameter name: length when I try and use substring.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim text As String = TextBox1.Text
Dim comp(9) As String
[code]....
Project Euler's problem 16:2^(15) = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
What is the sum of the digits of the number 2^(1000)?I have been trying to do this problem for a few days now and i just can't figure out how to get vb.net 2008 to recognize anywhere near that large a number. I have seen in other posts that some software like java has the integer type BigNumber or BigInteger but i cant find anything like that in visual basic. I'm running into this problem a lot using Visual Basic. I also can't seem to find any of the standard upper level math features in visual basic such as factorials and a few others that i can't remember but couldn't find under the math feature. any suggestions? (Sorry let me rephrase, any suggestions on how to do this stuff without switching to a different programming language.)
i'm trying to do a workshop selector that adds price of each workshop selected and puts the type of workshop the place and the total price then adds the sum of all workshops together.i'm trying to figure out how to extract only the price from the last list box and add them to get the final sum and display in a text box. I have a loop to add it but it only works when the workshop and place is not in the listbox.
View 3 RepliesI would like to be able to extract a number from within a string formatted as follows:
"<[1085674730]> hello foo1, how are you doing?"
I'm a novice with regular expressions, I only want to be able to extract a number that is enclosed in the greater/less-than and bracket symbols, but I'm not sure how to go about it. I have to match numeric digits only, but I'm not sure what syntax is used for only searching within these symbols.
I was wondering why some of the implementations were not working. In fact, the only one that did work was the one described by Matthew Flaschen. But that captures the symbols around the number as well as the number itself. I would like to only capture the number that is encased in the symbols and filter out the symbols themselves.
I was just wondering how to extract or parse any particual tags (whichever I specify) from webpages. I know how to extract text and links from webpages, but I tried to use the same method from the following code for div tags, title tags etcetera and it doesn't seem to work:
[Code]...
I have been working lately on a program who extracts URl Source codes!The program does work with most of URL but not for MEdiafire URL!When i check the source code from the web browser i can see there is some code missing;y tried diferrent types of Encoding.
Example:This is the final source code extracted from WEBBROWSER(Firefox,InternetExplorer,GoogleCrome)
--------------------------------------------------------------------------------------------
<div class="mf_lightbox_btns lb-footer" style="text-align: right;">
<a href="javascript:void(0);" class="secondary btn" onclick="$('body').removeClass('has-virus'); return false;">Dismiss Message</a>
<a href="http:www.bitdefender.com/mediafire/fix-it.html" target="_blank" class="alt btn">Get BitDefender</a>
[code]....
I have a textbox named txtWith (Amount where cash should be inputted) and I want the input to have comma. Example, if I input 1000, I want it to be like this 1,000. By the way, this is my code in the textbox.
///THIS CODE WILL DISABLE CHARACTER///
Private Sub txtWith_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtWith.KeyPress
'////////////////LETTERS DISABLED ONLY///////////////////////
If (Asc(e.KeyChar) >= 48 And Asc(e.KeyChar) <= 57) Or Asc(e.KeyChar) = 8 Then
e.Handled = False
Else
e.Handled = True
MsgBox("Please input numbers only!", vbCritical, "Error!")
End If
End Sub
I always have this problem. I have a textbox but is disabled and you can only input through a button. So, I want the input number "1000" to be like this, "1,000" but I don't know what code to put. Same thing with 100000 = 100,000
View 1 RepliesIf I insert in a Form a progressBar (Max value 1000) and I write this very simple example
For x = 0 To 990 Step 10
ProgressBar1.Value = x
Threading.Thread.Sleep(5)
Next
Me.Close
If I run the code with Windows7 setted as Windows Classic I can see the progress bar value go to the max value and after few time the Form Closes (same with Windows XP).But If I run the program with Windows7 setted as Windows7 Basic the progress bar value ONLY goes to the HALF max value and after half time the form Closes.
The code is the SAME, the PC is the same, Seven is the same (only personalized with different theme) but under Windows7 Basic it seems that For x = 0 To 990 Step 10 becomes For x = 0 To 550 Step 10..The INCREDIBLE thing is that if I insert in the For... Next a row like:
Debug.Print(ProgressBar1.Value.ToString)I obtain right values until 990... but for my eyes the progress bar only goes to half value in half time, then the Form closes.
I am trying to write a simple code that will essentially change the background oclor of a form from say red to green, like every five seconds.(Actually, it will be green 4 and red 6 seconds). I set my timer interval to 1000 and enabled it. So when I write my if/then statements in the timer area, would I be using timer.interval <=4, or timer.interval <=4000 to count off four seconds?
View 1 RepliesI have a windows form where i try to update a form which has 1000 labels. By update i mean i try to set the color of the labels. And i am doing this update in windows form timer every 1 sec.
My problem is the UI freezes. I tried using a thread. In the thread i tried to call the update code, but still the UI hangs.
I want to write code that complete task of putting 0 to 1000 via thread in listbox. I want to start 10 threads at startup and complete task.
All threads should work equally. Each thread will write 100 numbers. First start from 0 to 100, second from 100 to 200, third from 200 to 300, so on upto 10th.
I have written code but it has problem.
Dim num As Int16
Dim startLoop As Int16
Dim endLoop As Int16
[CODE]...
I am trying to insert 11000 records using sqlite in database but values arent inserted though program executes without error.[code]How should i insert?
View 6 RepliesWith lvList
.Clear()
'loading data from database
.View = View.Details
.FullRowSelect = True
[CODE]...
How to add 1000 to each prevbal and put it in the column remainingbal
Say a collection grow. Once it's size reach 10k, I want to get rid the first 9k. How to do so?Oh ya I could use removeRange.Is there another function that will output say, the last 1k of the element, say if I do not want to remove anything? Something like tail or something.
View 7 RepliesI need to show more pages in the control, is it possible? Terje Myklebust
View 2 RepliesI am trying to send more than 1000 emails by using gmail host.It was sending only 158 or 160.I am serching for solution in google.In google I found some articles which has described that we cant send more than 200 mails by using gmail host and some articles said we can send more emails using Thread class.I am using vb.net(visual studio 2005) for developing sites.
View 6 RepliesI am using a listview to populate a table with 1000 rows. The DB table is about questions and answers.
I want to use accordion control with listview. Should i put the accordion control inside listview itemtemplate?
What i want is clicking on the 1st question opens the 1st answer and clicking on the 2nd question closes the 1st answer and opens the 2nd answer.
UPDATE:
I am trying it this way
<asp:ListView ID="lvQuestions" runat="server"
DataKeyNames="QueryID"
DataSourceID="SqlDataSourceQueries">
[Code].....
I am having about 1000 MDI files which has to be merge into a single MDI file for printing.
i tried in MS dos with the help of copy command but icouldnt resolve.
i tried in Visual basic by reading the file in binary mode and converting them into ps files or mdi files which too result in error.
third and final i tried opening the file through word document libraries by referencing and priting in default driver with the help of hp ps drivers.
I have to create program that adds the whole numbers from 1 to 1000 and displays the sum in the label. Create a variation of this program that allows the user to specify any starting whole number and any ending whole number (10,000 or lower) and then adds all the whole numbers in that range. Allow for the possibility that a user may start with a high number and end with a low number. Format the label so that commas are displayed and there are no decimal places showing. I need help with the codes.
View 5 RepliesI am trying to make part of a form program do the following When I exit a text field, I want to import some datainto a datagridview control.The columns are (1)Key, (2)Location, (3)Part Number, (4)Serial Number, (5)Description.There are up to 1000 rows of data in anyone of the spreadsheets I am working from.By using a datagridview, I can click the header and sort the data by either of the 5 columns, and when I select a data row, the Key number is reported back (for now, into a text box)I will be using the key number to further manipulate the spreadsheet after I have solved this problem.There are thousands of articles on DataGridView, and over the past 8 days, I think I have read them all. I have tried many downloadable routines, which haven't populated the DataGridView at all.Please can someone show me a simple program which will do the above task, and will give me a base to start from.I am running MS Office Pro plus 64-bit on Windows 7 and Visual studio 2010 pro
View 2 RepliesI have a listbox with 1091 items in it, which I am adding during design time. Every time Visual Studio tries to save after I manually populate the listbox it will hang indefinitely. Is there any way around this, am I trying to add too many items to a listbox?
View 3 RepliesYou can query active directory with an OLEDB provider called ADSDSOOBJECT. This works great except it only returns the first 1000 rows. The following article shows how to work around this limitation in a vb script by setting the "page size" property of the command object. [URL]..I have been able to reproduce that code in VB.NET, but I am having problems getting it translated to OLEDB syntax, because there doesn't seem to be a "Page Size" property, or indeed a "properties" collection of any kind, in OLEDB.
[Code]...
I need to do a MessageBox.Show when ProgressBar1.Value = 1000 or after 10 seconds Button1 was clicked. For the second method, I thought of making a loop but I didn't know how to. I also need to search a string in a file (The string to search will be the text which was entered in a TextBox) and do different things depending on if the string was found or not.
View 8 RepliesI'm trying to make an application where when the user clicks a button, it generates a series of 100 random numbers between 1 and 1000, and then saves those numbers in a text file. All I could come up with is generating ONE random number, but I can't figure out how to make it 100. Here is what I have:
[Code]...
I am doing a bar cash register and I want to use a if statement to see if fosters button and number 1 on the number pad are both pressed then multiply constant by quantity number
View 1 RepliesI have the following code to extract the last name from any given name, but i aint getting it right. Pl help.
Dim i, l As Integer
Dim it2 As String
it2 = ""
i = 1
[code]....
I've been having problems extracting the value of a Regex in a String. I have a string with several regex expressions and I need to get the value of each expression's match. The thing is though, it's not returning the last match correctly. For example:
Regex Pattern: I play (S+.*?) and (S+.*?)
String: I play the guitar and the bass The program is returning the value of the first expression as "the guitar" but it's returning the value of the second expression as "the" instead of "the bass".
I have a string that looks like this:
var expression = @"Args("token1") + Args("token2")";
I want to retrieve a collection of strings that are enclosed in Args("") in the expression.
How would I do this in C# or VB.NET?
Does anyone know of a way that you can get the string that is held at this reference point (its the contents of a registry value that corresponds to a string - see this thread for more info [URL]
@%Systemroot%system32wbemwmisvc.dll,-204
I think I've seen C# (or maybe C++) code use lines like this but I cant find any way of getting the value from the DLL in VB.NET