Set Boundry Values For A Program?
Jun 20, 2011
For a program i have created it shows who the eldest is out of 2 people by them entering their name and age and then the answer is displayed.
i need to set boundry values as i cant have people writing their age is -1 or 400 or have a letter in it like 434d or have people enter numbers in for the name
how do i write code to stop users entering incorrect data into the text boxes i have provided for their details to enter as well as display a message box.
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Jan 13, 2012
debug the managed / unmanaged boundry environment: VS2010 on Win7 64bit
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Mar 2, 2009
The default MDI parent control has a large "desktop" area that can display multiple child forms. Users can drag forms to the edge of this desktop area so that most of the child form is off the screen. (A scroll bar then appears in the MDI parent) I don't like this feature. Is there a way to lock down the edge of the desktop area so that the child forms remain fully visible?
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Feb 8, 2011
I want to be able to change values in a program that i wrote by using another written program...
like if i want to change textbox1 to readonly during runtime... Well, If it is not worth it, it is not fun - you say programmers are boring but i say they are worth it.
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Nov 15, 2009
I am working on a program where the user inputs values, then the program calculates those values and outputs the sum. When the user hits the button exit then those values entered by the user are saved. When the user starts the program again, the values are still there. I wrote the code and everything works fine. I am saving those values in notepad... and the program grabs the input in notepad and outputs those values to the program. But here comes the problem:
Lets say the user wants the information in a certain column to be added to another column somewhere in the program. Is that possible ? And if it is can it be done when I am saving those values in notepad ?
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Jun 16, 2010
I just need to know how to set up this array within the program to allow 10 values to be entered then later be shown into separate labels as a largest and smallest value.Create an application that lets the user enter 10 values into an array. The application should display the largest and smallest values stored in the array. Figure 8-45 shows an example of the application's form after all 10 values have been entered, with the largest and smallest values displayed.The form basically shows a large label box where your values will show up. Then two regular labels next to the boxed label that determines the largest and smallest values. There are four buttons, a clear, exit, Display Min & Max, and Input Values.I have the actual program layout already made and the initial buttons already declared, being the exit and clear buttons. I just need to know how to setup the array's for the other two buttons.
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Feb 18, 2012
What I need to do is to have my program look at 2 different values then return a value.
Here's an example:
If my tube material = SA-214 and the tube gauge = 20 then my tube wall thickness = .032. The thing is I have 5 different types of tube material and 12 different tube gauges so based on which tube material is selected and which tube gauge is selected the tube wall thickness will vary. So if I select a TM of SA214 and a TG of 14 then my tube wall will be .076.
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Nov 17, 2009
I have designed a program that, when the "caclulate" button (btnCalc) is pressed, it asks the user for a file name, then pulls data from that file (file is a .txt of 100 decimals, one per line) and displays the Total, Average, Highest and Lowest. To do this, I have placed all the data into an array, and then used the array to get the information I need. All the code is in place, the only issue is that when the "calculate" button is pressed and the file name is entered, nothing happens.Need to figure out why the values are not displaying in my 4 labels (lblTotal, lblAverage, lblHighest, lblLowest)!!Here is the code:
Imports
System.IO
Public
[code]....
(For the record, I know I could get the data in one pass, however, being a beginner, I like seeing each value computed separately.)
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Jun 14, 2011
I mean, I want my program to take screenshots and i want it to count the number of pictures forever. Just like any Digital Still camera you know? Even when you format it, if you've took 2000 pics, the name of the first pic you take after formatting it "DSC2001"
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Sep 2, 2009
How do you set Site values in FTPWebRequest in VB.net.[code]...
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Jan 22, 2011
How would i write a program that takes three values X Y and Symbol. the program is supposed to display a rectangle which is X
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Oct 21, 2009
I wrote this code and everything works as planned:
Module SalesCommissionProgram
Sub Main()
Dim name As String = 0
Dim code As String = 0
Dim monthlySales, commissionDollars As Double
' Prompt user to input value for name
[Code] .....
For the finished project I am supposed to have it output the total sales and commissions for that were calculated before the sentinel value (Eugene) was entered. Here is what I tried and here is where I am lost.
Module SalesCommissionProgram
Sub Main()
Dim name As String = 0
Dim code As String = 0
Dim monthlySales, commissionDollars As Double
[Code] .....
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Jun 18, 2012
im currently working with an SQL Server 2008 database and im trying to change values in the database usign visual basic.The following code runs correctly and I have tested changing passwords and have been able to logoff and then back on again using the new password. The problem i am facing is that as soon as the application exits the database returns to its origional values so the next time i run the program the passwords are back to the old values.
[Code]...
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Feb 15, 2011
I am new to VB.net
I have a simple form with two textboxes, I want Textbox1 to write to a file named C:VALUE1.txt and
Textbox2 to write its value to a file named C:VALUE2.txt
Any text that is already in the text file MUST be over written.
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Jun 14, 2012
There are some html buttons which dont have id . i want to access these html buttons which have the same type name and values . But i cant able to access then due to their same names and values [code]...
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Jun 22, 2012
Basically, I have an array of data with about 1000-2000 data points that form a rough Poisson distribution. What I need to do is take the maximum value of the distribution (which I know), and find the leftmost and rightmost values that are, say, 70% of the maximum. (I don't really care what the value of these numbers are. I want to know what index position they are in.) I then want to find the centerpoint between these two indices, rounding if necessary, and return all three values (left, right, and center).
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May 3, 2012
I'm currently trying to improve the speed of my program. Basically the user inputs min and max values for a, b, c, and d and a constant n, and then it tries to find the curve/line in the form a (x/b + c) ^ n + d. However for large ranges (1-100 for a,b,c, and d; total of 100 million values to try), it would take around 100 minutes at the current rate (approx 800k values/minute). I'm wondering whether I can further improve the speed. [Code]
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Jun 16, 2009
I have items in a listbox control that I would like to repeatedly (when it gets to the last one, repeat) loop through and set the text to a label.
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Jan 28, 2010
I have 50 checkboxes for 50 american states. The user can choose all 50 or only 1( so basically any number he wants). Based on his choice, I want to insert or update the table in sql server 2008. e.g-
Color = blue and chk1=check, chk2= check and chk3 = check (chk = checkbox). now the user wants to ad 10 more states to this or remove these 3 and add 5 more. so u basically get the idea. the table in database looks like this - ID Color State_id there is a table called states, so stateid shall come from there. so how do i do a loop insert or update in vb.net?
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Nov 11, 2009
Can you add values inside textboxes that are located in tables in Visual Basic 2008?
I put a TableLayoutPanel on a form and inside the Table I put textboxes. Outside the table there is a button. The whole point of the program is so that the user inputs numerical values inside the textboxes and then hits the button and the answer comes out in another textbox. But its not working. It worked when I didn't put my textboxes inside the TableLayoutPanel.[code]...
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Aug 15, 2009
want to make a custom calendar. For that I made a table of 7 cols and 6 rows and added 42 buttons in it. I added an event handler. I used this file in other form and when I click at the button the event is fired in form2. I understand this is not hte efficient way to add so many buttons. As it is a calendar, so I got to add dates to buttons based on month selected.I am finding that part difficult. For this feature, I think I should add buttons dynamically. But I can't make out how to add buttons to each cell of the table. Later on each buttons text will also change. I have added the code written so far :
Public Partial Class CalendarControl
Inherits System.Web.UI.UserControl
Public mnthNo As Integer
[code].....
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Jun 18, 2012
I have a vb.net 2010 form with 22 data bound controls from two tables held in a dataset which is navigated by a bindingnavigator. This successfully adds deletes and updates. However what I need is when adding a new record I need some of the fields to be pre filled out. More specifically I have points balance fields etc which could be any value but will normally be 0 on a new customer so I want to initialize them to 0 when adding new records.
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Apr 15, 2010
I'm creating a calculator in visual basic 2008, and with this calculator I want to implement a feature that can store numerical values in a variable for instance x. Similar to the feature used in most graphing calculator that have the button showing: "STO->". I was thinking on using the My.Settings. But I'm having trouble on it.
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Jul 6, 2010
This is my code which i used to try this but it inserts only the last value in the listbox but i need all the selected values seperated by comma [code]...
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Oct 23, 2011
I am currently working on a program, that you enter certain values/text in and it organises it into a word document automatically,
I found a code online, which has worked a treat, However I'm wondering what lines of code I would need to:
1. Add Bullets or Numbers
2. Add a new line of text (I can add a new paragraph but I don't want a huge space between the two lines)
3. I have around 20 check box's is there a quicker way to check which are selected then write the text in word or do I have to write alot of If Checkbox1.Checked = True then, etc)
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Aug 17, 2009
I've written an algorithm that I believe to be correct for computing prime numbers up to n with the Sieve of Eratosthenes. Unfortunately, this program hangs on really large values of n (try 10 million). Here is what I've written...
Protected Function Eratosthenes(ByVal n As Integer) As String
Dim maxValue As Integer = Math.Sqrt(n)
Dim values As Generic.List(Of Integer) = New Generic.List(Of Integer)
[code]...
How might I speed this algorithm up? Where are my bottlenecks?
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Jan 5, 2012
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]................
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Aug 11, 2011
I am using VB.Net 2010 and calling a stored procedure with a dataset to get values in a table plus "created" values.
The values for the "created" values do not come across from the stored procedure. They all show as zero in the IDE and False for the variables. I know I am getting the record because the first five values come across from the stored procedure into the variables correctly.
When I step through a VB6 program using ADO the values are pulled across from the stored procedure.
The problem seems to be in the interface between a dataset and "created" fields in a stored procedure.[code]...
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Oct 21, 2008
I created a program that has serval labels on a form and a listview object. It has a button that when clicked reads a textfile and loads up values in the listview object. I then can click and drag text from the listview box to any label on the form and then the program removes the value from the listview box. Now, my question is how can I instruct VB to save these values in the text property of the labels so that the next time the program is loaded the labels will contain the values loaded during the last run time session?
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Mar 23, 2009
I have a DEM file(Digital Elevattion Model File) and I am trying to open the file,where we have Latitude and Longitude values inside the DEM file.And, Now I have opened the file using Filestream and Read the file using BinaryReader.But, I am having a trobule in getting the values of Latitude and Longitude.I am getting Byte values randomly as 1,202,31,271 etc.But, we dont have latitude and longitude values more than 180,and also I am not getting 16 bit UInt values.For example, the values should be like Latitude 20.00416666666667 and Longitude 39.99583333333333.So,read the correct Byte values of the DEM file.The code I have used till now is:
Dim fs As FileStream = New FileStream("C:UsersadminDesktopHeader and DEM fileE020N40.DEM", FileMode.Open, FileAccess.Read)
Dim rd As New BinaryReader(fs)
Dim convertDB As UInt16
For i = 0 To rd.BaseStream.Length
[code]....
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