Math Question As It Relates To Pictureboxes
Mar 13, 2012
Im working with a Picturebox in VB using the following basic math equations. [code]I believe that this equation assumes I am working in a coordinate plane where the following is true (0,0) is the bottom left corner of the Positive quadrant
-x increases as you move right
-y increases as you move up
I am working in a coordinate plane where the following is true (0,0) is the Top left corner of the positive quadrant
-X increases as you move right
-Y increases as you move down
The issue is I am not sure how this will affect my original equation for intersection point.
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Mar 11, 2012
I would like to make a checklistbox which relates to a database, in that there should be the same amount of Items in the check list box as there are records in the table.
i was going to make a for loop for the amount of records in the database each time adding a new item to the checklistbox but im really not sure how to do that!
Using command As New SqlCommand("SELECT player_name FROM player_table", _
connection)
Using reader As SqlDataReader = command.ExecuteReader()
[Code]....
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Mar 5, 2012
well i am having a couple of issues with this particular homework problem and this is my first programming class so there is probably quite a few mistakes well the homework problem is to take three double values entered by a user and display the largest and smallest using math.max and math.min and display the smallest and largest so i thought i could use a listbox and take the values that went to the listbox and assign variables to each so i can try to use each variable in the math.max and min but im not making it to far and i actually might be way off
[Code]...
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Jun 20, 2012
I am creating a photo hunt game for grades 6-9 in summer camp. I want them to alter an image in paint then create two picture boxes. I want to put in ovals with no fill color to mark the differences in the picture but VB.net won't let me send the images behind the ovals.
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Aug 20, 2009
I,m developing a debt calculation program 'my problem is when i have to calculate the months to pay back the debt it comes to 28.04 and i have to get it to 29 my code looks like this:
[Code]...
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Mar 29, 2012
How can I round 4.39 to 5 in VB.NET? I tried:
Math.Round(4.39, 0)
But it displays 4.
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Jan 27, 2012
I am trying to perform a simple multiplication in vb.
Below is my code:
Dim minus As Integer
Dim minusPrice As Integer
Dim totalPrice As Integer
[Code].....
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Jul 29, 2011
I've been having a problem with Math.Log in a function I'm trying to write. When working with variables, it always returns 0. Here's the line I'm trying to run:
Quote:
mb = txtMb.Text
k = txtK.Text
t = txtT.Text
[Code].....
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May 8, 2009
I am trying to use Math.round. now my math.round (2.5) converting it to 2. O want to convert it to 3.
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Apr 13, 2012
I am trying to do math (-, +, *, etc) based on what a user selects from a combo box. The combo has the operators (-, +, *, /) in its items list. when the user selects one of them, I want to use that operator with the two numbers the user also provides from two text boxes.
dim intNumOne as integer
dim intNumTwo as integer
dim intAnswer as integer
[Code]....
'I don't think I want to concatenate here. but this is what I would like to happen (use the operator based on the users selection from the combo and the two numbers from the text boxes. I know I could write a select case or If statement but is there a way to do what I'm trying to do without Select Case or If? I tried to make theOperator a 'char' type variable but that didn't work either.
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Sep 20, 2009
Is there any way to parse a string in vb.net (like, built in methods), that can do math like Eval can? For example, 3+(7/3.5) as a string would return 2.
I am not asking for you to code this for me, I just want to know if there is a built in way to do this, if there is not I will code it myself.
I can wager that it would not be able to parse stuff like Sin(90) on its own, and I understand that would need to be replaced by Math.Sin(90).
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Oct 29, 2009
I have tried following coding to get highest value.EX: If I type 4.341111111111, It should get the value 4.35. If I type 9.132222, It should be 9.14 not 9.13.[code]
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Nov 24, 2010
I am building a tool to figure out final value fees. This is the math i have to try to code
$1,000.01 or more 8.75% of the initial $50.00, plus 4.0% of the next $50.01 - $1,000.00, plus 2.0% of the remaining final sale price balance ($1,000.01 - final sale price)
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Jul 13, 2011
I'm using .Net 3.51 SP1. I've been having problems with .Net's inability to add single numbers, could anyone throw some light on this.
[Code]...
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Jun 17, 2010
I am trying to create a small application which does mathematical calculations using dates and times. Specifically, to determine the period of time between two specific dates and times.
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Mar 1, 2012
I have a strange result coming from some big math & have no clue as to why I'm getting a different answer from vb.net vs python.Here are the quick snippets & results:
VB.NET
Dim MSB As UInt32 = 3067297518
Dim LSB As UInt32 = 1439785590
[code]......
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Feb 23, 2012
I've a problem using simple logarithm function Log in some ButtonClick Event. Log is underlined with next warning:System.Diagnostics.Log is not accessible in this context because it is Friend.
Have I missed something or this happens because of the Express version of Visual Basic?
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Jun 16, 2009
what i'm trying to do is make sort of a picturebox game. I have a picturebox name p1 that i got to move with the arrow keys on the keyboard. What I was tryna do next was to have it so that whenever I pressed the spacebar on that a new picturebox would be created, originate from p1's location and then go up 5 pixels at a time. so here's my code that i tried;
Dim Loc As Point
Dim shot2 As New PictureBox
If e.KeyCode = Windows.Forms.Keys.Space Then
shot2.Visible = True
[code].....
I have that under the keydown event by the way. So even thou vb didnt have conflicts with my code. But when I press the spacebar nothing happens.
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Jan 27, 2011
I want to create a chess table, and I've made one with a FlowLayoutPanel and 64 PictureBoxes but I have a little problem. After i add the PictureBoxes I hava a gap beetwen them and I don't want to have it, i've tried 2 posibilities but nothing, I will put an exemple from my code
Private Sub init_table()
Dim color As Integer = 0
Dim boundX = 0
[Code].....
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Aug 20, 2009
I have a game where I want my character to go over the PictureBox but he goes under it. How can I fix this?
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Dec 11, 2011
For counter As Integer = 0 To gamecontrol.unitlist.Count - 1
If gamecontrol.unitlist(counter).isAlive = True Then
'create picturebox if not already existing
[Code].....
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Jan 20, 2009
i'm making a program and a need to put some pictureboxes in an array, when i try debugging it gives me an error, i can't figure out what its having trouble with :S
Public Class Form1
Dim itemArrayXO() As Color = {picXO1.BackColor, picXO2.BackColor}
Public Sub XO_Check(ByVal x As Integer)
[Code].....
(you may notice there are only 2 pictures in there, thats because im trying to get it to work before i go typing it all out)
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Jan 29, 2009
I am developing a Blackjack game in VB.Net using Visual Studio 2008. I have Picture boxes to display the players cards. The issue I have is that when the player chooses to hit , the third card stacks properly over the first two, but on the forth hit,the picturebox(which contains the forth card) appears under the third card. The same happens for the fourth , fifth, and sixth card . I have looked at the properties for the picturebox hoping there was some kind of index (similiar to zindex in css) to order the cards so they would would "stack" on top of one another but leaving the numbers of the cards visible, to no avail as I am here posting I have a screenie of the situation to better illuminate my struggle.
If you look at the picturebox with the 8 of diamonds card in it , everything is fine, but you will notice that the 10, 4, and 8 of clubs is underneath. I would like these cards to stack as the 4 of clubs, the 9 of diamonds and the 8 of diamond did.
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Mar 18, 2012
I am haveing a big problem with object orientated programming I just can not seem to understand it fully I can use it for simple tasks but I am trying to use it to create enemys in my game that move automatically.I want to be able to put the moving logic in to a class and then apply it to as many pictureboxes that want in my game i also want the class to add enemys automatically. The enemys are cars and I have the moving logic but as I said am unable to figure out how to put it in a class and call it sucsesflly. If anyone could help me with this it would be very appriciated as this has been stressing me out for weeks.
[Code]...
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Oct 17, 2009
1. The lens equation for a camera is 1/f=1/di+1/de , where f is the focal length of the lens, is the distance between the lens and the film, and is the distance between the lens and the object. For a certain camera, an object that is 18 cm from the lens is in focus when the lens is 9 cm from the film. What is the focal length of the lens?
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Nov 27, 2010
Is there some interface I can implement to allow basic comparisons and math to happen as it would an integer?
For example, let's say I have the following class:
Public Class Something
Public SomeBigNumber as UInt64
End Class
I would like to do something like this:
Dim SomethingA, SomethingB, SomethingC as New Something
....
If (SomethingA-SomethingB) > SomethingC Then
'Do stuff
End If
I was hoping to be able to implement some interface (if that is even the right term for it) that would return the UInt64 contained in the class for comparison and math, if possible.
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Apr 15, 2011
I have to use a round method that follows this behavior:
7.00 -> round -> 7
7.50 -> round -> 7
7.51 -> round -> 8
I tried to use Math.Round, but it works a little bit different.
[Code]...
How can I implement my rounding logic?
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Mar 13, 2010
How to get numbers from a text box then use them in a math operation.
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Mar 24, 2010
Similar in concept to Math.Abs() - I'm looking for a function that when given a positive integer will return the same integer. If given a negative, will return zero.
So:
f(3) = 3
f(0) = 0
f(-3) = 0
Yes, this is simple enough to write on my own but I'm wondering if the .NET Math class already has this built in or if the same can be achieved by cleverly chaining a few Math.* calls?
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Dec 11, 2009
I am trying to figure out a calculation I can perform in C# to determine the rows per column. Let's say I know I am going to have 3 columns and my record count is 46. I know that I can mod the results to get a remainder, but I would like something more efficient than what I have tried. So I know I will have 16 rows per column with a remainder of 14 for the last column, but what is the best way to loop through the resutls and keep counts.
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