Looping Through Array Of Option Buttons With Similar Name / Seems Not To Be Possible
Apr 13, 2012
In VB6 I could set up code to loop through say 10 option buttons to check their values. The code would be something likie this:[code]But in VB .NET it seems that if I use the Controls command as above I cannot use/check the Checked property as Control does not take that as a property of Control. It seems also that I may have to use the Find property of Control as in "Controls.Find" etc.How can I do this in VB .NET? I have a very control intensive application and I must be able to easily loop through controls and check their values without writing out 10 x the code required.
I am new to programming and am trying to develop a GIS based application. Very simple, I have code to copy text into an attribute table. I have a form which has several option boxes with captions of different attributes, I need to be able to produce a loop code to discover which option buttons value=true and for each of these to store the caption as a string into a predefined string (mytext) seperated by a comma.
I have a lot of such buttons in my main form. They all do the same thing like this. get the text and pass to some other routine. If i have 20 buttons, then i will have 20 such subroutines. Is there a better (or standard way) to do this without creating that many subroutines?
I'm making a seat booking system in vb.net (WinForms) and I need the user to be able to select the seat they wish to use and for it to change colour (so they can tell that it selected).
I began to try using buttons, but 480 buttons seriously slowed down the load time for the form. I then tried a data grid view with buttons in the rows/columns, but couldnt make that work properly.
Would it be worth trying to use 480 picture boxes and change their background colour? Or would that just slow the form down the same way as 480 buttons?
I know how to check whether an item exists in a list using (MyList.Contains), But I do not know how to check the whole list. For example (use one button and one richtextbox):
But adding there code produces loads of errors. Am i for getting to add something? Protected Overrides Sub OnCheckedChanged(ByVal e As EventArgs)example errors remove overrides If Not Checked OrElse Me.Parent Is Nothing Then Returnhecked is not declareParent.Items is not a member of system.windows.forms
I am working on a code that should capture the color of a pixel in a bitmap and then check if the 8 surrounding pixels have the same color. If the checked surrounding pixel HAS NOT the same color it will be ignored, otherwise if it HAS the same color, it should check for its own 8 surrounding pixels and so on.
To do that, I have created an array that starts with a single entry (the x,y coordinates of the initial pixel). So, when a pixel with the same color is found it is pushed to the end of the array. I used a for each loop supposing that VB would keep looping until the end of my array - and since it is growing, the last position of the array would be always pushed until I have not more pixels to be checked.
The problem is that VB is not respecting it, and is considering my array as if it had just 1 entry. Seems that it catch the size of the array when it enters the loop, and regardless the fact I have pushed new items to the array it doesnt keep looping it.
How can I force VB to update the end of array position while looping it? Although I think it wouldnt be necessary, here it goes the code I have so far...
I'm working on a Connect 4 game. I created a rectangle with 42 holes punched out of it (drawn in Panels Paint event) and I have 42 circles (created with PowerPacks) placed in each punch out. Right now I'm just trying to get the game pieces to drop into place by looping through each column and coloring each punch out sequentially. Here is my
vb.net Public Class Form1 Private Sub Panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Panel1.Paint e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality Dim dimension As Integer = 50 Dim
[code]....
The problem I'm having is with my array of OvalShapes. I declared it as object and I don't think that's right. The for loop under the click event is not producing anything.
I'm making a card game and I want to try and design my own card deck.
Dim X As Integer Dim currentCard As Integer, currentCard2 As Integer Dim RandomNumbers As New Random() Dim NumberofCards As Integer
[code]....
I started a basic vb.net class for my fall semester of high school, and although I've learned a lot, my goal since the start of the semester has been to do this. I realize there are simpler way of assigning card values than writing 52 if then statements, but I'm planning on doing other things with the statements. As you can see, my main plan of action is to generate a random number for each card, loop through the array list to make sure the random number representing that card hasn't been assigned before, use the value to select the card, and then add the randomly selected number to the array list so it won't be used again (non-repeating random numbers).
1) I'm trying to represent all the numbers with Numberlist.Item(X) and that doesn't work because either a) x represents any one number or b) x always represents only 0, which means it only checks the first number.
2) I think I've read something about using this method for generating random numbers in a loop, that it doesn't work for some reason.
I am trying to loop an array in a sql insert statement but i can't get it working. Below is a demo i'm trying to get it running. I think i am having problem with the declaration of variable in sql statement.
Public Class Form1 Dim arrayValue(5) As Integer Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click[code]......
I am trying to create a multi dimension array that will search each row of the array and total up the number of 0's 1's, 2's, and 3's. I believe that I need to create some sort of looping structure that will search through each row of the array.I have created a listbox that will allow the user to pick which row of the array the program will search.This is what I have created so far, but I am only just learning and I am having trouble wrapping my head around how arrays work. So I'm not sure if I am on the right path or not.
Dim racescores(,) As Integer = {{0, 1, 0, 3, 2}, {1, 0, 2, 0, 0}, {0, 3, 0, 1, 0},
I have a 1-dimensional array that is essentially is written to a csv file. My problem is that after I have loaded the entire array...I wish to write it to the csv file and I'm not sure how to set it up.[code]...
im having some trouble with my loop code. When the isnumeric code detects it not a number it throws the msgbox error message but moveson to the next array for the user to enter a value via inputbox. Is there a way for the program to send the inputbox asking for the value again before moving to the next array?
how to get an array of string from certain datagridviewcolumn,i try using this code,it doesn't work..
For Each row As DataGridViewRow In dgvPaketRow.Rows If Not row.IsNewRow Then Dim str() As String = New String() {row.Cells(0).Value} Dim strRes = String.Join(", ", modCommon.str) msgbox(strRes) End If
I have created a SWAP function that does the swapping if the index value is greater than the index+1 value, with a loop that will iterate through the array (assuming that you dont have to specify how many iterations are required) until the array is sorted.
Is there a way of merging (importing or whatver is the correct terminology is) the data from an Array in to a DataTable woithout looping. I already know how to loop through the array to populate the DataTable with new DataRow but I'm looking for something much faster if it exists. I've got a 1 dimensional String array i.e. 'String()' that I need to populate a DataTable with new DataRows.
I want to pass a List of T where T is an object I've created that has about ten properties (strings, dates and integers).The lst passes to the function successfully. I am also passing an New T of the Object (itm as T).I can see all the values (see image below), but because it's generic I cannot seem to retrieve the property values and I cannot figure out how to iterate through the properties of each itm as they are retrieved in the For Each.[code]
I know you can make an array of button. But the buttons are already put on the web form in specific spots. I have the buttons named like- button1, button2, button3, button4, button5... Is there a way to use that in an array even though the buttons are designed from the start and not tied to an array from the start? I basically do not want to make a routine for each button and would like to use just 1 routine and add to the counter to update my access database[code]...
[code] i feel that it is a waste of code and should be shrunk down into some sort of loop. [code] i know i could easily leave it the way i originally had it, but i hate having wasted code!!
Using VB2010, I would like to create an array of buttons and a sub procedure that when I send the index number, I will be able to change the text on the specific button.
Dim myBtn as button={button1, button2, button3} private sub GetCaption (ByVal x as integer) myBtn(x).text="OK" 'If x=2 I should execute button3.text="OK"
[code]....
call GetCaption(2) 'Call the sub and change the text on button2 to say OK.How do I make it work?
I have a rather simple question - how do i delete an array of buttons (not reassigning different values, but removing the buttons and keeping the array for storage of other buttons). I haven't got a clue
is there a way to make an arry of buttons in vb.net in VB6.0 there is a prop of buttons name Index but not in VB.NET so if there is some way to do that,[code...]
