there are any nifty in-built .net methods that can essentially return either the number of occurrences of each element in an array, or simply return the modal value.
View 7 RepliesI am in a "survey of programming languages" course and have a professor who doesn't teach. There is no text book for this course.I am working a VB Form project to take a URL, grab the HTML source code, parse out all words, and count the occurrences of each word on the page. I have built the form, and written the code to parse the words and store them in an array. What is the most efficient way to count the occurrences of each individual word in that array (case insensitive), sort the results decreasing from most frequent, and display the results of the ten most used words. I will be displaying the results in two separate listboxes on my form. 1 listbox shows the words, and the other shows the number of occurrences.
View 17 RepliesI have to search within an array and display the number of occurrences that a value within the array appears. I know that my code is incorrect but this is what I have so far. If anyone can point out what I am doing wrong that would be great.
Private Sub btnResult_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnResult.Click
Dim intSearchAmount As Integer
Dim intCounter As Integer
Dim intIndex As Integer
[code].....
I'm using Streamwriter/Streamreader for the first time in this project and keep getting an "Argument out of Range Exception was unhandled" error.It says "length cannot be less than zero. Parameter name: length."This happens at "dblYearly Income." Also, how do I find out the number of occurrences of an item in an array? For instance, I have a Race combobox and need to find out how many occurrences there are for each race.Also, is there a way to count the number of occurrences of an array itself, I guess the upper index value? [code]
View 7 Repliesam working on a homework assignment and have got the vb running well. Except for one area where I am trying to determine the number of occurrences of a combination of letters "XY". All other instances of this works fine for individual letters.
For intIndex = 0 To intLength
strCurrent = strSearch.Substring(intIndex, 1)
If strCurrent = "th" Then
[Code]....
After executing a query with LINQ to SQL, the result I have is an arraylist (.ToList) of items with ID numbers. The number of items and their occurences will vary with each query. I would simply like to count the occurences of each specific ID in the list.
How do I do that??
The only count function I know of (.count() ) is for a count on the entire list. I've also I've been reading on how to loop through the list items but I don't understand how I can do that if I don't know how many specific ID's there will be from each query result.
I want to create an array of an array (or arraylist of an arraylist) to hold strings.I want to fill an array1 with string values Then add this array to array2. - but only taking up 1 row in array2 e.g something like array2(index)=array1 Then clear array1 then loop through this again with different data, and add it to the array2.so will end up with something like
array2(0)... contains a collection of array1 data
array2(1)... contains a collection of different array1 data
.. and so on
i think i need to make new instances of array1 each loop, but not sure.I dont mind if it uses arrays, or arraylists, or lists, or structure of arrayslists?
a program is supposed to display the number of times a number occurs in a larger number. For example, iff the user enter 356, its supposed to show the numbers 0 thru 9 and say how many times the number occurs in the program. I am pretty sure somethings wrong with the first For loop, but I am not sure why it doesnt work, all it prints out are zeros.
[code]...
I've googled for a while now, but I can't seem to find it.
I'm looking for a way to determine how many times a character occures within a string.
Let's say for example I want all comma's to be counted in the following string:
'122,333,222,11,44,55'
How can I retrieve the number of comma's? in example 5.
I'm having a hard time displaying the number of occurrences of the letters a,b,c,d,e I want to use IndexOf, but just don't understand how.
]Dim s2, s3 As String
Dim s1 As String
Dim a, b, c, d, e As Integer
Do While (s1 <> "finish")
[code]....
Count specific character occurances in string
I have a delimeter in string that i have to validate. How can I count occurrences of that char. For now i have a next function.
Private Shared Function CountChars(ByVal value As String) As Integer
Dim count = 0
For Each c As Char In value
[Code].....
I'm scanning through all characters in a textbox. Then the program counts how many of each character is in the textbox. Here's the code which adds all characters to a list:
For each c as char in TxtBox
list.add(c)
Next
Everything's working fine, except this will also add returns to the list, which I don't want. I thought I could write like this:
If c <> chr(10) Then
list.add(c)
End If
I haven't managed to find it and it is driving me nuts! If I have a structure such as
[Code]...
If I want to change a single element of one of the elements of the array, for example the DayHi field of the 0th element, then the code ATRList(0).DayHi = 4 causes the error: Error3Expression is a value and therefore cannot be the target of an assignment. Now I could get round this by reading all the items out of the 0th element into newATR, changing the field I'm interested in and then doing a "ATRList(n) = newATR" but there must be an easier way?
its like this if we think the original textfile like this [its meaning less] dim original as string = "myname is not thename wasthe notthe nameisnot nere!" i want to see what words are recurring, like name, the, was, not but i cant use split(), substring because they may even exist as combined words like thecat and i need to know the number of time it has recurred
View 1 RepliesI am trying to populate an ArrayList using the elements from a DataTable. I know I could do this using Loop, but I am trying to figure out how to using AddRange.Here's my code:SomeArrayList.AddRange(SomeDataTable.Rows.Item(0).ItemArray)
The problem is that I can pass the collection except for the Zeroth element.
This is the collection I am trying to pass to the ArrayList:
1. Dog
2. Cat
3. Bird
This is what I got 1. Cat 2. Bird
I want to access each entered element in an textbox as an index in ArrayList. But, the problem is that whenever I enter value in the textbox, it stores all the values in single arraylist index.
View 1 RepliesI need to randomly pick an element from an array and I can only use that element three times,I can randomly pick the element but how do I go about only using it three times.
View 4 RepliesI have a problem in Treading.I have a code like this;[code].....
I want to change ListBox1 with ArrayList. But I couldn't find how to use adding a string to ArrayList in tread.
I have an SQL database with a single table with several colunmns. I want to count how many times a certain number appears in one of the columns. E.g. I have the following:
A B C
8 4 6
0 9 3
1 4 6
4 7 1
I want to count the number of times 4 is used in column B. I have looked at using the following, but not sure if this is even the right approach:
Dim db as New MainTblDataSet
Dim BCount = Aggregate B In db.MainTbl Into Count(B.B = num)
where num=the number I am counting the instances of (4 in this case).
The hope is that BCount will equal 2, but it returns 0 every time.
How to count no of Words in A RichTextBox?
View 9 Repliesi have a datagridview linked to a access DB that right now looks in the 5th column and counts the number of "c","o" (completed and open) but it gets the count from the entire data base. I am able to filter the ones for a certain day and view them on the grid but how to count the number of occurrences that are visible and not the ones that have been filtered out?
View 3 RepliesI am using a tableadapter to connect my project to an MS database. I need a a function which counts the number of rows in the table for something which I am doing. I have sucessfully used the count function to count the number of rows for my other tables, but when I tried to reuse it for another table, it wouldn't work. I get an error...
An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dllAdditional information: Input string was not in a correct format.Couldn't store <AH25> in ProductCode Column. Expected type is Int32.
and this is the code which I used
Dim record As Integer = TAProduct.GetData.Rows
Do Until record = TAProduct.GetData().Count
' other codes
loop
It only seems to work if the first column is an integer datatype, which is the case for my other tables, but the table which I am currently dealing with using a string datatype. Is there another way to count the number of rows without using SQL statements or can I adapt my existing code in some way?
I have a datatable that stores information on employees. What i'm trying to do is use it to run a seniority list looping through the table using the current system date. The looping part i have no problem with, and the system date calculation also i know how to do. The problem call the date from the startDate column to do the calculation.
i have tried
dim sDate As date = "startdate"
but i get an error that it cannot be converted to date.
i made a tool which detects arrow keys .When i click up it shows the word up in text box when i click down arrow it shows down word vice versia.
My problem is i want to count the number of times i clickd an arrow and want to save it in text doc with time and date
I have a display system that I created in VS Studio 2005 that uses ini files for certain functions. Reading and writing to ini files is easy enough but what I just can't figure out is how to count the number of items under a particular ini section.
View 4 Repliesi am trying to count up to a number and add each number to a combo box. so for instance, the string value = 7. i want the combobox to count up to 7 in single numbers starting with 1
View 15 RepliesI have been doing well and also I am a noob I know it and you know it a lot has started making sense and I am evening figuring new things out without using Google but of course I have hit another snag in my program so here goes
I am waiting for an email to arrive (the page automatically refreshes) and then I want to click the link (I do not need to click to open the email or anything like that) I also have the code to click and navigate to the address reason being it was the only way I could figure out how to stop it opening in a new window on IE
So my only problem is I need a way to check every x seconds for the element and then if its there proceed with my code and if its not wait and then check again or however this is done in VB.If this is not the way its done please point me in the right direction the code I am using to find and then navigate to the link is
Dim emailpageelements As HtmlElementCollection = WebBrowser2.Document.GetElementsByTagName("a")
For Each emailver As HtmlElement In emailpageelements
If InStr(emailver.InnerHtml, "https://twitter.com/account/confirm_email/") Then
WebBrowser1.Navigate(emailver.InnerText)
[Code]...
I am trying to count the number of times a specific character is in a string. The problem is when I run the program the letter doesn't advance from "d" in the string "debugging" and doesn't display the number of time the character "g" is found.
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
Dim letterCount As Integer
[code].....
I have an application where event driven events are already detected. Each time an even is detected I increment a counter.I would like to add the following functionality:
1.) I would like to create a time stamp each time an event is detected and store them in some kind of data structure.
2.) I would like to count how many events are being stored (or in essence count how many events have occurred in the past 10 seconds, not once but continuously).
3.) I would then like to discard of any events older than 10 seconds note events are interrupt driven and can occur more frequently than once a second, but updating my count of how many events have occurred in the past 10 seconds can be done as infrequently as say once a second.
Assume I have an array myArray1 = { A, B, C, D, E, F, ., T}I have another that contains a subset of the elements of myArray1 but where the order may vary
View 3 Replies