I'll try to be brief, In short im trying to add together a variable, (name = STRFinValue) within a For loop, I think the syntax should be:
STRTotal = STRFinValue +STRFinValue(f)
But I am very wrong.
Private Sub btnLBTotal_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
I have written a function that gets the alexa ranking of a given url, now this function works perfectly but I want to loop through a ListView of urls and grab the alexa rank of each item (url) with my function.The code works great if I put a MessageBox in the loop to test that the function is returning a value but when I remove the MessageBox the loop does not work.I need it to loop through adding each result without a MessageBox stop in each loop.
vb
For Each Item In ListView1.Items
Dim result As Integer
result = GetAlexaRank(Item.Text)
[code].....
I'm trying to use variables created within a loop, but I'm not sure how to do this. I've searched around on the net and there is a few recommendations to try and put what I require into a function then just call the function.
[Code]...
Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
Dim chatters As List(Of Chatter) = New List(Of Chatter) chatters.Add(New Chatter(New Guid("CD863C27-2CEE-45fd-A2E0-A69E62B816B9"), "Me")) chatters.Add(New Chatter(Guid.NewGuid, "Juan")) chatters.Add(New Chatter(Guid.NewGuid, "Joe")) Application.Add("Chatters", chatters)
[code]....
I am unable to understand last 3 lines that are bold and underlined. Please what is hppening here. Chatter and Chat are two classes defined in App_Code folder. Is there any sight that contains all possible ways to declare and initilaze variables and data structure:
Dim chatters As List(Of Chatter) = New List(Of Chatter)
how would I do a loop with different my.settings variables?
ie lots of variables
My.Settings.numberofsites = 3
My.Settings.SiteDesc1 = Home
My.Settings.SiteDesc2 = Work
[Code]....
This would give me an error as there is no variable called SiteDesc.... but I actually want it to return SiteDesc1, then SiteDesc2 etc.
what if you created a pool of numbers: 1 - 21 and then chose a random selection from the pool? Something like the following:[code]This gets rid of those messy if statements and all of those loops.
View 1 RepliesI need to assign variables dynamically in a loop. In php you would use curly brackets but this doesn't work in vb.
Dim i As Integer
For i = 1 To 12
lblMonth{i}.text = 'whatever
Next
Anyone know how I can escape the the i variable so it becomes part of the string that precededs it?
I am writing a program and i need to declare matrices but there will be a different number to declare everytime the program is run so I was wondering if anyone knew how to declare them inside a for loop
eg.
For i = 1 to NumberOfMatrices
Dim matrix i (5,5) As Double
Next
[code].....
This program asks the user for a number and then an amount to multiply it with and that amount should be added to the initial number. I need to loop because I am trying to display what the amount would be each day for a certain amount of days but in this loop its only calculating for the total .how to get the variables to change value to the updated day. I understand that its just keeping the same value in the variables I just need a push on how to get it to update the values through each loop.
I would like to loop over two string arrays but does not work.[code]...
View 4 RepliesI have a sub which requires multiple counter variables. Is there a more efficient way of doing this. My example is simple. Image if I had 20 separate counters I was trying to manage. I would have to create 20 separate variables and then increment each in the desired place in the code.
Dim Counter1 as Double
Dim Counter2 as Double
Dim Counter3 as Double
[Code].....
I have some variables that are distinct by numbers, like in1, in2...If I have for loop, how would I access those variables, using the counter, and attaching it to the variable?I believe in JAVA, you could just use in+ct... where ct is the counter to access the variable.also how could you make a new variable in the for loop?Initially I had variables declare outside of the for loop. The problem was how to access those variables using the for loop.
var_nm1 = in1.Text
var_nm2 = in2.Text
var_nm3 = in3.Text
Dim nmList(2) As Integer
[code]....
This is object oriented programming, and I made the textboxes in1, in2, and in3 using the GUI editor. that was so easy.
In my loop I am trying to remove items from a list that have a certain name. I can't do this with a for-each, so I tried a regular for-loop. It seems the for loop is not working as expected. It always goes over the limit. I had to put an if-then to break out of the loop (very ugly solution). I'm trying to find the correct way to accomplish this. [code]...
View 1 RepliesThis is my first attempt at doing something in VB.net. I would like to be able to read a text file consisting of a column of data values and then pass the data as a variable to a sub that produces a line graph and updates it with each iteration through the loop. So far I have the code to read the file as well as some code that produces a line graph using hard coded values.
I am unsure how to call this sub from my loop such that I can pass that data value read from the file to the graphing sub.
How can I call the "PictureBox1_Paint" sub from my loop? How can I pass variables read from the data file to "PictureBox1_Paint" when I am calling it? Is there anything different that needs to be done if I want the graph to update with each iteration through the loop (for each data point)?
Public Class Form1
Private Sub Start_button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Start_button.Click
[Code].....
Here is what im trying to do. I have a loop and trying to concatenate it to produce the string. For whatever reason im getting test1, test2, etc instead of the variable equals to. What i am trying to do is get the value test1, etc.... from the concatenating test & cstr(a)
dim test1, test2, test3, test4, test 5 as string
test1 = "The"
test2 = "dog"
[CODE]...
We have a project that needs to gather survey data. On one particular page of the website, there are 21 questions each with a scale of 1-5 where the user selects one radio button for each question in the table. The survey is being coded in VB.NET. The data submits to an SQL database. All the radio buttons are similarly named, so only the number changes for the question [Code]
View 2 RepliesI am saving scores form my game in to a dadt base but the game involves answering questions mid game that pop up in a seperate for so I have two scores a question score and a game score and at game over i want the two scores to add up and be displayed in one labe wich appers on the game form when my count down hits 0 so I tryed to add them
heres is the game code
Public Class frmplay
Dim score As Integer
Dim total_score As Integer
[Code].....
so I want to add correct answer to score and display it in a label thatwill show on my game form
i had a look at how to set values of variables from nummbers stored in external txt files the variables then needed to be added up so i used trial and error first
((XVAL) + (NEWVAL))
assuming that XVAL was set to 10 and NEWVAL was set to 20 i expected to get the answer of thirty but waqs presented with the new value of 10 20 VB.net pysicaly added the two values together but i wanted the mathematical product of the two which is ((10) + (20)) = 30
Ok so I have an array and wish to add the variables of the array to separate lines of the list box. I came across this which in some ways worked but also didn't. The second thing mentioned on the page was to us:
ListBox1.DataSource = Form2.Title This works the first time you run it but if you try to run it again nothing happens. So using the above or something else how can I get it to update the list box? Another thing I tried was to use the DataSource method but instead to clear the list box first, but that turned up an error
If I'm trying to output to a listbox, what is the easiest way I can enter a string and then a variable on the same line? I'm trying to use listbox1.Items.Add(...). Obviously outputting a string is no problem and outputting a variable is no problem, but I want to add a string and then a variable after the string. For instance:
name = "Joe Smith"
listbox1.Items.Add("Name: ", name) [or something like this]
[Output] Name: Joe Smith
I'm having issues w/ querying the database w/ user selected dates. Hardcoded everything worked fine but when I started to use the DateTimePicker things stopped working.
Dim sqlcn As New SqlConnection(db.dbcn)
Dim cmd As SqlCommand = sqlcn.CreateCommand()
cmd.CommandText = "SELECT * FROM TABLE " _
& "WHERE CHK_DT BETWEEN @BeginDt and @EndDt"
[Code]...
I am trying to add 2 variables and the result to appear in a label.The case is that there is a platinum version of an album which costs more. The extra cost depends on the album so it varies.If the user wants to purchase an ordinary and a platinum album then I must add the two variables and the combined price to appear in a label. The normal and platinum prices appear fine when the other is zero but when I increase the quantity on both the label remains blank.I have an if statement like this:
If PriceNormal >0 and PricePlatinum = 0 Then
lblPrice.text = PriceNormal.ToString("C")
End If[code]......
I have declared 2 variables as Double in my VB Code. Example:[code]Somerwhere down the code, after some internal calculations, the variables A1 and B1 have attained new values. Example:[code]Do I need to do a conversion of some sort in my program codes ??
View 12 RepliesForm1 has 2 public string variables defined and initialized to "" (an empty string).Form2 has 2 text boxes and a button. When the button is clicked the public variables on Form1 get set to the values in the text boxes.This works fine.I recently had to add a module to my project so that I could use Main as the startup item. Ever since doing that the above no longer works.The variables never get set to the values in the text boxes. They just stay empty.My Main code is simply this for now:
Dim f As New Form1
Application.Run(f)
I am using vb.net with phpMyAdmin MySql database. While running the piece of code below, the program hangs in the for loop before the variables are assigned values from the data table(dt)...
'Check for appraisal period-----------------------------------------------------------------------
Dim sqlCheckDate As String = "SELECT * FROM tblappraisalsetting where appSetID=(select max(appSetID) from tblappraisalsetting);"
[CODE]................
I have a text file (*.txt) with a name in each line, like this:
Joe
Dane
Lisa
Kelly
Now I want each name added with a number from 1 to 99.
Like this:
Joe0
Joe1
Joe2
[code]....
I have folowing code:
For n As Integer = 0 To (numbernames) - 1
strContents = objReader.ReadLine()
For i As Integer = 0 To 100 - 1
[code]....
With this code all happens ok and a new text file is created with the desired name-list with added numbers.The only problem is that the last name doesn't get a number added from 0 till 99 but for example 0 till 17.
I've made a program where a picture of a bee buzzes around the form in random movements (using random number generator code) and have put it in a while loop so that whilst the bee is visible on the form (hasn't flown off the sides) it moves randomly:
While (picBee.Top > 0 And picBee.Top < 725) And (picBee.Left > 0 And Timer1.Enabled = True)
Application.DoEvents()
For i = 1 To 3000000
Next
picBee.Top = picBee.Top - 2 + 4 * Rnd()
picBee.Left = picBee.Left - 2 + 4 * Rnd()
End While
So far the bee does stop moving when it meets one of the four edges of the form but I need to code it so when the be reaches the edges and stops a message box appears declaring the game over.
I have a parent panel with child panels that contain images. I am looping through the panels to save the images in the order the panels appear in the parent panel. [code] I can also re-arrange the panels via mouse. The problem is that when they are rearranged, they do not retain their order when saved.. They simply are saved in the order they were added to the parent panel.So my question is, does the for loop use the index set when adding the panel? If so, how can I manipulate the index in runtime while arranging the panels via mouse.
View 4 Repliesi have an SQL statement which i need to code in vb:
create
table r2 (salesno
bigint, prodno1
[Code]....
Note that in this "2nd loop"
- the table name is now r3 from r2 in the first SQL statement
- there are now prodno1, prodno2 and prodno3 instead of just prodno1 and prodno2
- in the WHERE clause, the p.prodNo becomes p.prodNo2
and so on and so forth.. so for the 3rd loop
- there's going to be r4
- there's going to be prodno4
- in the WHERE clause i will use p.prodNo3
what should i do? is there an array or something that i can use here?
I have this fully working with a massive wall of code and validations, but I want to dynamically add new datatables to shorten my code massively.I am pulling out rows from a database for quotations which are separated into batches. So each batch bring out its quotations and a photo. As I said, I have this working find, but I am not happy with the code.
For Each arow As DataRow In dt.Rows
Dim counter As Integer = 0
While counter < batchmax
[code].....