I'm wanting to put a random amount of data into an array, or an arrayList or some other collection.
Then say>
Dim myItem As Object 'It might be a string or a number or whatever. In this case
Integer or String probably.
' then say>>
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Trying to create a form where user enters a lower bound, upper bound, and an amount of random numbers to generate (that are between the lower and upper)
I was able to get it to generate random numbers but only 1 per a click of the calculate button...I would like user to be able to click button and it to generate and display all the numbers on seperate numbers all at once[code]...
I am currently taking a introductory level class to vb.net. For the assignment it asks to create two functions. One function should create a random number within a given range. I have completed that part. What I am having trouble with is the second function. It wants the next function to use the previous function three times so that it displays 3 separate random numbers within a given range and display it in a D2 string format.
View 1 RepliesI am using Visual Basics 2008 Express edition. I want my program that I am making to generate a random amount of numbers and letters in this form when I click Button1.
WM9RX-GG6J2-4WKD9-FDJWM-TYH76
Is this possible?
The file structure is fine for retrieving data from the file but when I go to write data to the elements and hit any of the fixed array elements, I get an exception error. this has got to be a sytax problem I am just not seeing.
It seems that I am not addressing the array member correctly yet the same logic pulls it properly from existing records on file.
in a Module I have the structure as follows:
Structure INVOICE
<VBFixedString(6)> Public NUM As String
<VBFixedString(2)> Public SYMBOL As String
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I have been tasked to create a Visual Basic console script that asks the user 5 times in a row to input a number into an array (sales figures in thousands), Then you display these results as a sort of tally chart.
For example for the data: sales(10,7,12,5,15)
The output would be
2008:++++++++++
2009:+++++++
2010:++++++++++++
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how to change the integer value from within the array into a certain number of a single character.
i have a datagridview binded with the datatable via its datasource property....now i want to add the Amount column of the dgv and display the total amount in the textbox,if the amount is greater than a certain value then i want the cell to coloured red so i did this code and it worked great:
Dim i, j As Integer
For i = 0 To DataGridView1.RowCount - 1
j += Me.DataGridView1.Rows(i).Cells("Amount").Value
Next
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but my problem is that i want the red colour of the cell to blinkafter every 2 seconds....how to do this?i need to handle the timer tick event for this but i am not able to do this.....
im trying to make a simple program that calculates the time it takes to cover x amount off nautical miles at x amount off knots, the code i have so far is this :
Code:Public Class Form1 Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
End Sub
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
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so if i say want to cruise 29 miles at 12 knts it gives me an awnser of 2 hours 24.6 mins instead of 2 hours 25. Although i do realise that 2 hrs 24.6 is technicaly right i was wondering if anyone here could help me with getting it into the correct format?
im trying to make a fast food program on which the user will input the amount that he has, then he will check on what he wants, by using check boxes. There are 7 different check boxes with 7 different amounts of money. I have the program somewhat finished (thanks for the people that helped me before) but theres still a couple of things that I still need to get finished but I dont know how to.I need to be able to get how much money the user has (this will be entered threw a text box, I think I accidentally messed this part up, because I cant get it to work right, (theres alreasy a permit amount of money in there and it needs to be what the user enters instead of the permit, 5.59, one) and this will be the maximum amount he can spend, then the user will check on the food he wants (and the program will add the sales tax also) then it will produce an answer saying if you have enough money or if you dont. But what im confused on is how do I get the users amount of money and make it the maximum mount he can spend and make sure it doesnt go over the amount that he has checked.[code]
View 1 RepliesI am working in a point of sale system in Vb express 2008. I want to convert the Amount in Figures to Words like: How to conver the amount of $ 1,550,325.45 to Amount in words as DOLLARS: ONE MILLION, FIVE HUNDRED FIFTY THOUSAND, THREE HUNDRED TWENTY FIVE AND FORTY FIVE CENTS.
View 2 RepliesI am working in a point of sale system in Vb express 2008.I want to convert the Amount in Figures to Words like:How to conver the amount of $ 1,550,325.45 to Amount in words as DOLLARS: ONE MILLION, FIVE HUNDRED FIFTY THOUSAND, THREE HUNDRED TWENTY FIVE AND FORTY FIVE CENTS.Please advise how to code for that in Vb express.
View 5 RepliesI'm searching the same title "Large amount of data in ComboBox" last 1 and half years but I could not get what I'm expecting! Here is my case, I have 20 thousand unique products, I just fill into dataset & bind only two columns in the combobox for searching & validating the product if it is exist in the product list or not.
1) I read about dataset but all articles are described "Dataset only for few records because it is sitting in-memory". If I fill few records (100 or 1000 products) into the dataset, how can I search & validate REMAINING (NOT FILLED) products?
2) Is there anyother way without filling into dataset and bind to combobox? Can anyone suggest me which is suitable for me?
I'm working on a project at the moment, where all the data being loaded is kept in an XML file which until now have been rather clean with structures such as
Code:
<Textures>
<Texture id="1">TerraingrassDirtNW.png</Texture>
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I tried to follow this advice, but I still run out of memory.
[URL]
Basically, I am reading all the bytes of a 1 gb disk and I want to try and do a md5 hash on it. However, when following this example, my cryptostream gets too large a System out of memory exception.
Is there another way to do the md5 hash over some much data?
I am currently reading it into 10 million bytes arrays at a time. Can I hash the first array, and then use it as a seed for the next array, and so one, like you might do to a CRC32 calculation?
I am trying to show a large amount of data in gridview but the problem is that everytime data increase the gridview row size increase automatically.
View 4 RepliesUpdating an Excel file from a dataset seems to work fine. But if I have text that's longer than 255 characters then I get the error above.I've been working on this for a couple of hours and I haven't gotten anywhere. I've tried messing with the connection string and changing a registry setting, but no luck.
View 2 Repliesi am writing an application that will need to store less than about 1mb of data. this data will be read and edited by the user. this data will be very simple ascii data. the application is in vb.net on a windows-form. the data will be stored locally on the person's computer.i have several questions.what kind of encryption method should i use to store the data? the user wants something that is not too powerful, but not too simple either.how should i store the data? why not just write it to some file and encrypt it using some medium encryption method?is application settings data encrypted? perhaps i can store it that way? is it suitable to store about 1mb in application setting data? how would i do this? which variable would i use?
View 3 RepliesI'm at a compleate standstill with my homework here's what i have so far <summary> Validate the data from the Amount Invested TextBox. It must be at least $500 and no more than $2 million, including up to 2 decimal places. Set the MaxLength property to manage the number of digits entered.b.If Amount Invested is in the valid range, calculate the table and display it in a clearly-labeled, read-only, multi-line TextBox.c. display an appropriate message and calculate the table for an Amount Invested of $1.
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how to create graph using vb.net .actually i have to creat a graph for amount of data coming per second in my computer from my LAN ?
View 4 Repliesi want to make program for a quiz.i create the questions is an array,and i want that questions start at random, and never be shown again.
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how to calculate the amount needed to save up to a certain amount.
Private Sub btnCalc_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCalc.Click
Dim dblSavings As Double
Dim dblFuture As Double
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I want to create a program that will keep track of the amount of (network/internet download) data that has been received, but I have know idea how to go about doing it.Where would be a good place to start with this type of development? Or could some one give me example code that will get me started.
View 1 RepliesI have an array with 280 items in it. I only want 140 of those, so I want to pick them at random. So I need to generate a random number between 0 and the source array's getupperbound property. I think. Is there a more suitable way to pluck an item from an array. I wonder if there's a way to ensure that you don't choose the same item more than once. I suppose I could randomly sort the source array and choose the first 140 items, that would ensure I don't get a repeat item. But could be inefficient if the source array is much larger than the destination array, because I'd be shuffling more values than I need to shuffle. I suppose it's a sampling problem.
View 5 RepliesIm creating a program that randoms 5 questions and when a certain question is shown then it must not be shown again when the button is clicked. Lets say when "What is my name?"array is shown when the button is clicked then it must not be shown again until the last question that is not shown will be shown.
Public Class Form1
Dim random As New Random
Dim Question() As String = New String(5) {}
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Im having some problems with displaying a random image into a picturebox now i have to form on Form1 i have a button code..
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim intPic As Integer
Dim rand As New Random
Dim ImageList As New ArrayList
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Its one of them yellow highlight errors as i cant see anything wrong with this code could someone
How Can I random the numbers in my array but they will not repeat the array value. The array number starts from 11 to 14.
Or how can I random 4 buttons.text that uses array to call their text?
I have a vb.net Windows application that calls a vb.net Web Service function. Both the vb.net application and Web Service have been in use for over 5 years and have worked well. The Windows App builds a text file consisting of a number of inserts into an Oracle table, followed by a call to an Oracle package. The Web Service call uploads the text file to the Web Server, loops through the statements in the text files and executes them. It then does a Select statement to put the resultant data in a string which is passed back to the calling program. We have both people on our local area network as well as external users where the call to the Web Server is over the internet.
The data string returned is the pricing for each of the lines inserted in the text file, separated by asterisks. Normal use of this call has anywhere from 1 to a few dozen lines, and the program works fine for this for both internal and external users.
Our problem right now is one external person is attempting to price a job with 491 individual line items. At first it would not price, whether the job was priced from a computer at the customers site or one of our internal people on the LAN. The problem turned out to be the timeout value was not long enough (it was set at 2 minutes, this job takes 5 minutes) so changing both the Timeout value in the Web Service call as well the httpRuntime executionTimeout value in the web.config file on the web server addressed the problem, but only for our internal users on the LAN. Our external customer wants to be able to price jobs of this size going forward, and I am at a loss as to why it errors on internet connected machines but not locally connected machines. Our customer is in New York, We are in Wisconsin, and I am able to recreate the error condition from my home computer.
The other thing is, if I create a VPN connection to our server from my computer at home, this job will price (again, it takes about 5 minutes) but if I disconnect the VPN connection, it gets an error after approximately 3 minutes, http 404: Not Found.The customer can otherwise price all of his other jobs with no problems, it's only this one, very large job that gets the error.
I have not messed with VB much and I have been trying to do something that has me stumped. I wanted to create an array of 10 random numbers. Each of these numbers then is printed onto a label. From here I have two more labels that show the highest and lowest value. I got the first part, 10 random numbers show up but then things get shaky. This is what I have thus far.
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i want creat a simple game. but how to create a random value to index in array
i.e index of aray [1,2,3,4,5,6,7,8] is generated randomly become [8,6,1,5,4,2,3]
then i use tha indext for a button text
"and anyone can make below code more simple"
Button1.Text = arr_tombol(1).ToString
Button2.Text = arr_tombol(2).ToString
Button3.Text = arr_tombol(3).ToString
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Generating random numbers in an array HELP
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