Calculating The Sum Amounts Of Multiple Button Controls?
Apr 11, 2009
I've been working on a project for a class for the last few days. Here is my current issue, I have created a form where I have multiple buttons representing different t-shirt with different prices. So hypothetically, if the end user were to click on the button that is assigned to red size small there would be an extra $2.00 (on top of the $5 fee of any other t-shirt), I know how to code for the calculation of one item, but I'm not certain how to add say a small red shirt, and a large pink shirt, and have the two items calculate correctly.
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Aug 30, 2011
I have created a simple custom control - we will call it a "panel with buttons". Here is how I instantiate it:
[Code]....
So what I wind up with are multiple instances of my panel. Each of these panels has a button on it called Button1.
My question is - how do I capture this button event in a way that I will know which panel index it came from?
In the custom control there is only the Button1_click event - and when I click on it in any of the multiple panels I manually instantiated the event does occur, but how I can tell which one of my instantiated buttons were clicked...
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Jun 23, 2011
How do capture which button caused the postback on a web form with multiple controls using asp.net
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Oct 17, 2011
Basically I have 4 empty textboxes. I need to calculate the total and averages of the numbers entered in them. So far, I've declared 4 variables and made it equal to the text that was input by the user. I'm stuck with the calculations tough. The user doesn't have to use all 4 boxes. So if he/she only entered 2 numbers, the total is divided by 2, not by 4 for the average. I think I'm supposed to use a for... next loop because the maximum iterations I should do is 4, but I'm not sure how to the code even if it is supposed to use a for loop. Otherwise, the rest of my project seems to work fine.
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Aug 31, 2010
I have a project that I'm working on and we are basically creating a calculator to calculate area of a rectangle and area of a circle using one button. How do I code to allow the button to calculate both the area of the rectangle and the
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Apr 10, 2012
need to make sure I got everything right for my Calculate Button in displaying the Total and Average.
Option Explicit On
Option Strict On
Public Class Grades
[code]....
My problem is mostly in the Calculate Button, what is CStr? I already used that because I set my Explicit On and that suggested it. Also when I debug I enter my 3 grades and click calculate, 0 is displayed in both my Total and Average Label box.For the Average, how would I display it to 2 decimal places?How would I set a parameter for the exam scores to be between 0-100?Would it be Try/Catch? And where would I place that coding?How do I convert my textboxes to integers?
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Jun 26, 2011
I have a project where I am to enter a name and a test mark into two separate text boxes and then select the button to store the information into the arrays, one array for names and another for marks and then you can click the calculate adverage mark button and a label should calculate the adverage mark but I cannot get the marks to be added and then divided by the number of entered marks. Such as: you enter in a name and a mark of 75, and then another name and a mark of 50 and then another final name and mark of 25. I have been trying to get it to add up the marks of 75, 50, 25 and then divide it by 3 the number of marks in the array, but it wont and I cant get it to add the marks as a integer no matter what I seem to do.
Here is my code:
Public Class frmAdverageTestMarkCalculator
Dim ClosingMsg As String
Dim Closingtitle As String
Dim SureAboutClosing As MsgBoxStyle
Dim Closingresponse As MsgBoxResult
[Code] .....
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May 22, 2009
I wanted to know if anyone could tell me how to access the Click_event.I have a boarderles form with a panel control which has the Dock property set to fill and on the panel I have placed a Label also with the Dock property set to fill. I also have a timer running.How can I get code to execute in the Label1 click event.I've tried doing it by using the generic Click_event and also with two variations of the Click_event Handles parameters
'Alternativ 1:
Private Sub Form1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
[code].....
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Aug 23, 2011
There is newer code in a follow up post. I suggest using the code in the later post rather than the code in this one. You can still read this post though. When designing a user interface, one should be conscious of how many individual controls are required to implement the functionality. In some cases an initial design may begin with many buttons or textboxes (for example) but then further review of
the actual required functionality allows for a reduction in the number of unique controls.
But other times, there isn't a better way (which will still make sense to the user of the application) then to have a series of many repeated controls. So in the cases where one can be certain that the best UI implementation for an application will require the use of multiple copies of a given control, then it often becomes necessary to maintain some method of managing all of those controls at various points
throughout the application. Doing so typically requires that one build up some collection of controls which can then be accessed by index in order to work with any given control; but this can lead to a lot of clutter in the code file which handles these control's events. For instance there will be some kind of collection declaration, some recursive routine to find all of the controls of interest, and then any number of event handler methods with long lists of Handles clauses, or additional code loops to wire up the event handling for each control.
Purpose Since most of this functionality could be considered a requirement regardless of the type of control being managed, or its required functionality, it may make sense to wrap all of the control management functionality into a single class. And since our first requirement is a collection of controls, then a base collection class could be the perfect starting point for our control manager. There are a number of existing thread around this topic, with some recent (at the time of this writing) ones being:[URL]..In this, and related, threads I have posted examples of a simple TextBoxManager and ButtonManager control. But again, with so much similar functionality required regardless of the control being managed, it would be technically possible to create a generic ControlManager(Of T As Control) class which can manage any type of control.
[Code]...
So in summary, one can facilitate managing a large number of user interface controls by building a "control manager" class which both encapsulates the list of control instances, and deals with adding and removing defined event handlers for every control it manages. The generic control manager class itself can be inherited and extended into a more specific class on a per-application basis in order to provide more application-specific functionality. Reed Kimble - "When you do things right, people won't be sure you've done anything at all"
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Dec 17, 2009
I am making an application that uses multiple WebBrowser controls, and multiple proxies.The code for changing the proxy settings are as such:
#Region "Proxy"
Public Structure Struct_INTERNET_PROXY_INFO
Public dwAccessType As Integer
Public proxy As IntPtr
[code]....
Note: getRandomProxy gets a random proxy from a list.Problem is that whenever RefreshIESettings(getRandomProxy()) is applied, the proxy will be applied to all of the WebBrowsers, while i would need to have a unique proxy for each WebBrowser. Not having this would just error out the page in the other browsers and so on.
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Jul 15, 2010
I am Sorry but I Can not get my head around Saving data in a Form to my records (DataBase) When I Click Button1. I know how to clear the controlls when i click Button1. How Do i start The code "Do I use a SaveFileDialog1" or "Do I Look in the property settings" how the code starts. is what i have at the moment is below. also Button1 should be able to clear the controls ready for the next user input.
[Code]...
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Apr 8, 2011
I have been able to do the exercise's in the first 2 chapters and half the exercise's in the third chapter of the text book (programming in visual basic 2008, Julia Case Bradley & Anita C. Millspaugh). but this one is making my head want to explode. please point me in the right direction with this.
Heres the problem. The company has instituted a bonus program to give its employees an incentive to sell more. For every dollar the store makes in a four-week period, the employees receive 2 percent of sales. The amount of bonus each employee receives is based upon the percentage of hours he or she worked during the bonus period (a total of 160 hours). The Calculate button will determine the bonus earned by this employee, and the Clear button will clear only the name, hours-worked, and bonus amount fields. A Print button allows the user to print the form. Do not allow missing or bad input data to cancel the program; instead display a message to the user.
Here's my code so far. its giving me the wrong results. i have tried many different ways,(hence the commented code) but I just dont know where im going wrong.
Public Class VB_Sales
Const BONUSHOURS As Decimal = 160
[CODE]..............
Attached image(s)
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May 20, 2010
i have 5 buttons in row (btn1,btn2,btn3,btn4,btn5) and 1 OK button when i click indivisually to each button of 5 buttons its color changes to red and after click on OK button the color of buttons which are red turns green the problem is that i don't know how to insert induvisual record of each button of which color is green in access database
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Sep 11, 2010
This is what I am to create: [URL]I am having trouble coding the String for the amounts in the listbox since VB doesn't allow the dollar sign "$".
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Nov 11, 2011
How to send large amounts of text with TCP.[code]...
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Oct 13, 2011
I want to calculate the total for bill amounts in an arraylist. I have already used this code:
[Code]...
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Mar 20, 2009
make a money denomination program in VB.NET.The problem is when you enter a number the program should convert it to word format.If you enter in '98534671.23'the program should convert it to "ninety eight million five hundred thirty four thousand six hundred seventy one and twenty three cents".See Also:How can I convert an integer into its verbal representation?
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Mar 4, 2009
I am working on a VB application in Visual Studio 2005. I have a number of fields where the user needs to enter currency amounts. I am using a MaskedTextBox with the following currency mask. msktxtAssessedVal.Mask = "$ #######.99"
The problem that I am having is that when the users type in the value, the cursor always starts at the leftmost position and appears to force that many digits. The typical data values can vary anywhere between 9,999,999.99 and 20,000.00. If the users do NOT have a value that has 7 digits left of the decimal point, they need to move the cursor to the correct position before they start typing in the value. These users are used to quickly typing in their data, then tabbing to the next field so the current behavior is not acceptable.
Does anyone know if there is a way for the maskedtextbox or any text control to detect where the user types the decimal and format the data accordingly?
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Nov 11, 2009
What I want to do is display large amounts of text and a few pictures, ideally with hyperlinks between the pages. A lot like wikipedia really, lots of similarly arranged pages, text in categories with in-line hyperlinks and the occasional picture to illustrate a point.But not online, integrated as part of a larger app.
How would it be best to go about doing that? The display method is sortof dictated by the storage method. My thoughts were:
Lots and lots of labels stored in an Access database
Straight HTML as if it were a webpage embedded in an iFrame or something
Labels populated from XML files?
Program the whole lot in Flash or something else (A language I can't speak)
This is only a mockup for demonstration purposes so the priority is user-friendlyness and ease of programming rather than storage concerns or good programming form.
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Sep 5, 2009
Is it possible to create a kinda virtual storage in a vb application so that data created during run time are stored right in the applicaion instead of its environment?
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Jul 16, 2010
I have three text boxes for inputting amounts of money. One is for a total check amount, the other two are separate amounts that should add up to the total check amount. In each of the individual text boxes validating events, I have the following
Private Sub txtAmount1_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles txtAmount1.Validating
Try
[code].....
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Oct 11, 2010
if I want to submit a large amount of text to my asp web page, do I need to worry about the text itself such as containing "&a=" that would mean another variable is being assigned for submitting data? Any way of not worrying about this? Or do I need to replace the & symbol everywhere in the test first if used?
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Jul 24, 2011
the project here is to take the three amounts from three text boxes entered by the user and return a string in a label telling the user if the triangle is either a right triangle, equilateral triangle, or neither after clicking a button. The code I have must use a new Class named Triangle. No matter what is entered in the text boxes, the label always returns "You created a right triangle!"
[Code]...
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Apr 25, 2011
I recently wrote a program that collects information from the network can displays it in a DGV for the user to see. I tested this on networks where I would end up with several thousand items brought back and all worked fine, very little memory increase and once the search had finished the memory usage went back to pretty much what it was before the search, so I assume I have no major memory leaks that I should be concerned about (I'm careful to always dispose of things and clear large variables where possible).
However, a new company has now started using my application and they have several hundred thousand items that my program will find. They reported that they leave the program running its search for a few hours and most of the time it crashes with an Out Of Memory exception. Now I did have my app do some caching of certain information to avoid querying the network more than was necessary so I thought well maybe this is what is causing it but I added an option to turn that off and they say it still happens. So the only thing I can see it being is simply the amount of data that the program is finding and having to store in memory.once my application has gathered information about the items it stores them in a List(Of MyItemClass) and then when the search is complete the items are added to the DGV. So I'm thinking maybe its just the size of this List(Of MyItemClass) that is simply getting too large. Bear in mind that each instance of MyItemClass in this List can have quite a lot of information in it as it has several properties that are List(Of String) that may contain a few thousand strings in some scenarios.How do you deal with such large amounts of data without running out of memory?I'm assuming the only option I have got is to 'page' some of the data to a temporary file on disk once I get over a certain number of items in the List(Of MyItemClass)?
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Aug 26, 2010
When I click a cell or a row in a datagridview I want to be able to open a new form with several textboxes and comboboxes in it and to be able to edit the selected row. The only thing I managed to do so far, was to fill a texbox from the form with the info from the sellected cell using the following code.
Dim
cell As
DataGridViewCell
[Code]....
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Apr 12, 2012
I have the following code which is used by 7 comboboxes, the only difference is the combobox1 to 7 and the DataGridView5 to 11. In VB6 I would have used arrays, is there any way to write the code once or do I have 7 ComboBox1_SelectedIndexChanged subs.
[Code]...
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Nov 21, 2011
My application has a TabControl which has 5 tab pages. Each page represents a "department" and each department has to run this software. So when the user opens the application, they navigate to their department's page.
The software runs a serious of automated and manual tests. The tests are customized for each department. But I need to update the UI during each section of the test.
On the main tab, there is one panel that has 17 PictureBoxes. Each PictureBox represents one test. The PictureBox can either represent a test in progress, a test passed, or a test failed.
All of the tests are in their own code files, for the most part. And in the main form is when I call the tests and update the UI from a single method.
The issue I'm having is how to update the PictureBoxes without creating a bunch of redundant code.
When the test runs, I update the first PictureBox with "in progress", then when it completes, it's update again with pass or fail. So for a single test, I could need to place the UI update in several places, within the same code block, for planning out all the possible conditions.[code]...
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Dec 18, 2009
I need to constantly display large amounts of colored text in WPF or Silverlight, and I need the user to percieve it as showing up instantly.
Currently I'm doing this using a canvas and textblocks, one textblock per 80-character line, with multiple runs to a textblock to handle the different colors. There can often be 20+ runs to a line.
In a 45x80 grid of text, this gets a framerate of about 12 in Silverlight, which is sluggish. Oddly enough, it's even slower in WPF... I can only speculate that this has something to do with my dev machine's lousy video card. Maybe it's trying to hardware accelerate and actually slowing down because of it?
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Apr 19, 2010
I created a program that watches about 10 folders for different excel files. Using the filesystemwatcher with filters in place and correct error handling, it still misses some files once in a while (that's ok I guess).Anyways, I'm writing this because I added another form that has a filesystem watcher, when I tried to load the form I got a stack overflow error - an error that isn't debugged (a greenish line that you can only stop debugging).Am I going about this a wrong way? Is filesystemwatcher unreliable with large amounts of processing?
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Jul 6, 2011
AM trying trap specific events for some controls on a form. i tried this, but its not fireing the events
[Code]...
EDIT I found out that am placing the control in multiple controls, on the form is a panel, inside the panel is different groupbox, these group boxes have the controls am trying to trap their events
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