Countdown - Performing Addition / Multiplication On Entered Number
Sep 20, 2009
I have made an countdown app that is working in a normal way (added picture of it). Now when I select a number in the numeric box and click start, it starts to count down from that many minutes, but what I want is the number I put in the box *3. So if I put in 3 (points) the counter will count down 9 minutes. If it is possible I want a counter at the bottom every 3 minutes the value of the 000 at the bottom of the image multiply by 1 (+1 for every 3 mins timer1 runs).
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Aug 20, 2009
I am trying to multiply timespan by an integer....
Private Sub wtothrs0_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles wtothrs0.MouseClick
Dim temp As TimeSpan = TimeSpan.Parse(ttothrs0.Text) + TimeSpan.Parse(wetothrs0.Text)
wtothrs0.Text = temp.ToString
[code]....
i gives the error mes "Input string was not in a correct format."
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Oct 31, 2011
I need to create a tiny calculator using the basic operators of Addition, Subtraction, Multiplication, and Division. My professor hasn't really covered much of this, so I'm not to sure how to create it.
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Jun 5, 2011
I am trying to make a program in visual basic 2010 where the user enters hours minutes and seconds into text boxes and then the program will count down from that until its equal to 0 when a msgbox appears and says its finished. I was converting hour entered, minutes entered, and seconds entered all into seconds and then having a timer subtract 1 from that until its equal to 0. But the problem I'm having is that I want to display the hours, minutes and seconds left in a label to the user in a format of: "hours: 0 minutes: 23 seconds :42" but how to display it in this format.
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Mar 21, 2010
I need to code a basic multiplication table in VB. I need a popup input box to ask the user to enter a number, then a label to display the multiplication table for that number from 1 to 9.
[Code]...
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Apr 5, 2012
Here is my code:
number = 1
If chkFN.Enabled = True Then
If ProgressBar1.Value < 100 Then
number += 1
lblFN2.Text = number
[Code]...
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May 25, 2012
Have a very nooby question here, textbox2 contains a number and if the number entered in textbox1 is higher than textbox2 i wish to display a message box but the following doesn't seem to be working properly?
Sometimes it lets the user enter a higher number, maybe I am doing this wrong?
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
[Code]...
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Mar 7, 2010
I'm writing a program for my algebra students to practice integers.Stuff like....
3-6
-4 + (-5)
3(-4)
-15 � 3
etc.
I want to show an explanation and for the addition and subtraction, I want to show it on a number line. For example, if the problem is 3 - 7, the number line should show and arrow to that goes right to 3, and then left 7 units (starting from 3). Then the student can see that the answer is -4.I could probably do this with some string manipulation, but what would be the easiest way to do it in a picture format? Maybe a bitmap.
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Oct 5, 2011
I want to check if the value in the text box is EVEN NUMBER.else throw an error mssg.
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Nov 14, 2009
Imports System.Math
Public Class Form1
Dim var_ghost As Object
Dim var_number As Double
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
My question is; when you enter a variable to inputbox like "100.5" it shall return a numeric value at line1 and "100,5" too. But when I need to check for entered value is a real number or not (Look line2) CDbl("100.5") returns 1005 CDbl("100,5") returns 100,5.
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Mar 17, 2011
Here's my
Module Module1
Dim Board(3, 3) As Char
Dim PlayerOneName As String
Dim PlayerTwoName As String
Dim PlayerOneScore As Single
[Code] .....
How can I make it come up with no error when no coordinate has been entered, basically instead of a number being enter, the return key is just pressed.
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Jul 1, 2010
how to create number of labels entered in a textbox.
I mean if textbox.text = 3, then three labels will be created programatically.
Of it is more or less, the exact no. of labels has to be created.
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Feb 25, 2009
how to validate 4 textboxes so that only numbers 1 to 4 can be entered but no number can be repeated.i already have code but it only validates some of the boxes and allows numbers to be repeated in other
Public Class frmGrid
Private Grid() As Short
Private Const intDimension As Short = 3
[Code]....
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Nov 15, 2009
I am trying to program the hamming code in vb... theoretically i understand and know how to do everything, first problem I've encountered is dynamic arrays in vb.net ... is it possible to determine the length of an array from the number of items entered in it, since I have no means of figuring out an exact number or length prior to several mathematical function which outcome will be the data .. directly saved to the array !!
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May 11, 2009
I have designed a form with textboxes for numerical entry. I need to validate each textbox so the number entered is an integer, and is between 0-1000. I am struggling to find how to validate the data entry.
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Jul 18, 2011
Simple code! where am I going wrong. I get end of statement expected in line 4 after valid.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If valid('0') Is True Then msgbox("HI")
End If
[code].....
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Aug 15, 2011
with a code that can detect when a pin number is entered in reverse. and alerts the user that he has entered pin number in reverse
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Jan 8, 2012
i want to know the code for an average of numbers from 1 to a number entered?
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Feb 2, 2011
I am writing a Do Until Loop to check if the number entered in a textbox is between 1 and 12 in Visual Basic 2010.
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Feb 24, 2010
I have a UI that uses datagridviews / bindingsource / datatables of typed dataset for data entry. The dataset itself is serialized to a varbinary(max) in SQL. (i.e. no tableadapter, backend schema).I would like to limit the number of rows the user can enter into some of the grids (the data is used to fill PDF forms and I don't want them entering more rows than the forms can accomodate.).I have subclassed the datagridview, added a rowlimit property and tried to manipulate the AllUsertoAddRows property
Imports System.Windows.Forms
Public Class dgv
Inherits System.Windows.Forms.DataGridView[code]......
The behavior I see is that the messagebox comes up after leaving the max row even when the user is trying to leave the grid. I can lose the messagebox and deal with notification some other way but I thought someone else may have come up with something a little more sophisticated to handle simply causing attempting to add to many records to navigate out of the grid to the next UI control.
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Dec 13, 2010
How to count no. of characters entered in multiline textbox, i wanna enter maximum 140 characters in my multiline textbox using vb.net ...
In short i want textbox to enter limit is only 140 characters .[code]...
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Nov 1, 2011
I need to display a grade based on the number of points entered. store the min and grade in a 2d array here's my code that I have currently:
Dim strGrade(,) As String = {{"0", "F"},
{"300", "D"},
{"350", "C"},
[code]....
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Jun 13, 2011
I have to write a program that does a count down on the number of seconds you entered in the GUI I have most of the code and it basically has to countdown the seconds i type in the txtStart. Attached is the program design..This is what i have so far with the code. It converts seconds to hours and minutes and seconds, but it doesn't do the countdown.[code]
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Nov 13, 2011
the task is to have an image move up and down when a number is entered in the text box and the start button pressed. now ive managed to get the image to move up but not to sure how id get it to go back down.the code ive used so far is
Private Sub btnJump_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnJump.Click
While picFrog.Top > 0
picFrog.Top = picFrog.Top - Val(txtSpeed.Text)
[code]....
but it comes up with a error. can someone point me in the right direction of what kind of code i should be using?
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Nov 18, 2009
I am trying to mkae sure that there has been 16 numeric digits entered into the masked textbox. If not show errror message and if so to call the fucnction ValidateLuhn. When calling Validate Luhn i want the program to tell me if the number entered is valid or invalid using the code in the function:
[Code]...
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Feb 2, 2012
Vb is not my language of choice , but I have to do this for school and I'm not having a very easy time with VB's documentation.I'm just creating a very simple console application that accepts user input: degrees in Celsius, and converts it into Fahrenheit. I want to make sure that if the user just hits enter without entering the degrees in Celsius, then an if else statement will catch and write to enter Celsius again.Here's what I've tried:
[Code]...
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Apr 5, 2009
When I read a value from text box I want to make sure user has entered a number(int/float/double etc.) not a string. Is there any function to check it? otherwise how do i validate it.
Language : VB.NET
Version : Visual Studio 2005
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Apr 14, 2011
I have an application that provides a countdown for 60 minutes and I'm currently using the win form timer and it updates some labels and a progressbar. Now I have to change this to be a countdown for 360 minutes. Will the win form timer be sufficient or should I implement a Timers.Timer instead?
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Feb 28, 2010
i need help how to add odd numbers that are in my 6 textboxes collection and to see the result to label1 and how to add the textboxes that have numbers less than number 5.
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Dec 13, 2009
the disply color buttons click even procedure shold display the color of the item whose item number is entered. all item numbers contail eactly five characters(12b12). my problem is i can not get it to disply a color in the lblcolor control. it displays the item number.
[Code]...
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