Restricting Property To A Range Of Integers?
Nov 5, 2009
I want to create a property for a custom textbox control that accepts only positive integers of a predefined range, say 1 to 20, with 8 as default. I can declare the property as Byte or UInt32, but that would still accept 0 and the upper limit is bound by the range of the type and there would be no default setting. When I use an Enumeration I'd have to create a list of all possible inputs, but when I want an upper limit of 1000
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May 8, 2011
Im currently making a tower defense game and im on my last bug for the game and i cannot get it solved. For some reason my For Loop to check if a shot hits a person is not working properly. Ill set it to "For Me.x = 1 To NumOfFaces 'Const for 5' and itll only check the first enemy and last enemy. Here is the code to check for if a shot hits an enemy, this runs on a timer through out the game.
Private Sub HitFace()
For Me.x = 1 To NumOfFaces
If Shot1Firing = True Or Shot2Firing = True Or Shot3Firing = True Or Shot4Firing = True Or Shot5Firing = True Or Shot6Firing = True Then[code].....
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Mar 20, 2010
I tried coding for an application that will display the positive integers, negative integers and zero entered in a inputBox. for some reason it keeps crashing down.here is my code. paging all visual basic professionals. [code]
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Apr 18, 2011
I've mainly been recording keystrok macros... I created visual basic code that allows the user of a template to hide table gridlines - which works fine. The code to show gridlines does not work if the table has only one row. Here is the code - it is getting "stuck" on the
.LineWidth = wd
LineWidth050pt for a horizontal border, as there isn't one. I don't know how to change the code to not execute the command if a horizontal border line does not exist.
With Selection.tables(1)
With .Borders(wdBorderLeft)
.LineStyle = wdLineStyleSingle
.LineWidth = wdLineWidth050pt
.Color = 5592405
[Code] .....
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Mar 8, 2010
anything wrong with using datatype object and determine datatype in class property? I have a typed dataset and it has several integers columns that are null in the db. and when I make a call it throws exception.is there anythign wrong with setting it as object in my dataset.. changing the throw exception property to Nothing and passing it to my property as integer?
for each row in myDS.DataTable
cRate.CustID = row.CustID
next row
and in my class
Public Property CustID() As Integer
Get
Return _custID[code].............
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Feb 2, 2012
Basically I have and array of integers that vary in size. I need to compare each number to each other number and display which number is repeated. For example:
Dim ints() As Integer = {1,2,2,5,4,6}
The number that shows up more than once is 2.
How can I run through the array and compare each integer with the numbers in the array. I tried a for loop but it didn't return the value I was looking for.
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Dec 15, 2011
Im using a datagrid for user to enter input. However,im restricting the grids to some value.My grid is actually not bounded to any database. so,here is my requirement: whn the form is getting displayed,all grids are getting displayed.,which dont want.,only row2 shld get displayed to user after he'l finish entering values in row1.. im using vb.net as front end and access as backend..
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Aug 20, 2009
I've been tasked with creating a kiosk style system to browse a college library catalogue. It's all gone really well (unusually) and I've just shown my first version to one of the library bods. They're very happy with it but want to know if I can sort it so that folks can't navigate away from the library pages.I know how to prevent explorer opening a new page but not sure how to limit the browser control to one domain.
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Dec 15, 2011
i want to restrict -ve values entering into access database table.im using vb.net as front end...
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May 12, 2009
i am having a problem with either my algorithm for restricting an angle between lines. I have a diagram of my problem at the following linK: [URL] In the above diagram, i know the positions of the Points marked on the diagram. The Black lines represent where the lines are currently, i want to move the lines so that they are at right angles to one-an-other (i.e: they are perpendicular) if they are moved to not be so. This is represented by the gray lines.
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Aug 4, 2011
I have an interface IDigitalState defined as
Public Interface IDigitalState
ReadOnly Property Code As Integer
ReadOnly Property Name As String
End Interface
[Code]....
What I wanted to do was declare a variable as a nullable type of IDigitalState. I understand why I cant do this because the interface may be implemented by a class which is not allowed to be nullable. Is there a way to define the interface so that it can only be implemented by a structure.
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Nov 25, 2009
I have a textbox that is for National Insurance Number, so I want the first 6 characters to be letters and the last to be a number. I know I need to use the Is Numeric function but I cannot get it to work.
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Aug 15, 2011
i wanted to restrict my text box to have only 10 characters.I have used the following code
[Code]...
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Jun 21, 2009
can anyone help me in restricting characters or numbers in a textbox?
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Nov 21, 2009
I want to restrict the number of characters you can put into a textbox.
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Apr 11, 2010
I want to create a textbox user control which accept only numbers.
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Dec 8, 2009
I have developed a Windows Forms application using VB.NET and MS SQL Server 2005 Express Edition. My database name is 'AC'. I do not want ANY user, SQL Server or Windows authenticated, to access, read, write to, update, drop or take backups of this database, except this login 'Adel'. So my connection string looks very similar to:[code]What configurations should I make in the MS SQL Server Management Studio 2005 Express Edition to 'Adel' login, 'AC' database, and all other logins to accomplish this?Given the following:I do not own the server; my client owns the server. They have a domain set up (LAN network).They have ASP.NET applications running using other databases on the same server. However, these applications have nothing to do with my database 'AC' or login 'Adel'.Some of their applications do not specify 'User Id' in the connection string; they use 'Integrated Security=True'.
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May 5, 2011
I need to perform some validation for a computing project, How would I restrict the user from entering symbols into text boxes?
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Aug 5, 2009
Any way (outside of writing rounding routines) to restrict the number of places after the decimal in a Decimal data-type variable?
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Jun 8, 2010
the first is validating numeric input in a textbox to make sure it's got two decimal places. I think this should be really simple, but I'm totally missing it.The second is adding an extra summary line to a listview. I have it working with all the data required, but I need to add an extra line at the end showing some totals. How do I do this?
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Dec 14, 2009
I am using the following code in the Load method of a VB form to generate random numbers in the range 1 to 8. Without fail after enough loops the range is exceeded and 9 is the random number returned every time. The line using the Rnd function is from: Rnd Function (Visual Basic)
[Code]...
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Mar 25, 2010
I am getting the error:"Range variable 'sender' hides a variable in an enclosing block or a range variable previously defined in the query expression."for this
Imports System.Data.SqlClient
Imports System.Linq
Public Class Form1
[code]....
I can select any other item from the table without the error. "sender" has the same properties as "receiver" in the SQL table.
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Dec 9, 2011
I'm having some very weird issues with interfaces right now.
I have a very simple setup. In one of my class, I have a Property implementing a Property from an Interface.
In my class it's like:
Private _oForm As IForm
Public Property Form As IForm Implements IContainer.Form
Set(value As IForm)
[Code]...
I have like dozens of interfaces like this working throughout my project and I can't believe this simple one can't work!
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Jul 7, 2010
I'm using vb in excel 2007 and need to work through a range or array, the size of which varies from time to time.
The examples of using range always demonstrate using literals eg "A1:A25"
How can I programatically determine the end of the range - ie up to where the cells value is blank
And then can I use a variable in the range statement - eg .[A1:Lastcell]
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Jul 6, 2011
this is what i need done add up the sum of all the even integers from 2 to 50 in VB?
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May 28, 2009
I'm making a program that will use .split and I only want to split every other instance. The way I want to do this is by splitting by only odd integers, how do I do this?
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Feb 18, 2010
I would like to know if there is a command to make a program choose between certain integers. For example, I would like my program to make a random choice between the numbers 12, 118,224 and 300.
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Apr 8, 2010
Id like to use 4 integers in a For, Next loop. The integers are 1, 3, 7, 9. Is it possible to pass just these integers to the loop without putting them in an array or something similar?
[Code]...
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Apr 25, 2011
What is the formula in VB for finding the average of two integers?I know in normal math it is e.g. (4 + 6) / 2 it only needs to be the average of two values.
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Apr 19, 2012
So I am making a file crypter so that I can encrypt my VB.NET Application that I am making so that people can't decompile it. I had made this in C# and am transfering it to VB.NET, Everything worked fine in C# but once I had re-written the code in VB.NET i get this error inside of my RC4 Encryption method:
'Arithmetic operation resulted in an overflow.'
The error is occuring here:
Dim t As Int64 = (s(i) + s(j)) Mod 256
This is the same code above in c#:
int t = (s[i] + s[j]) % 256;
Is there anyway to make that calculation with it erroring? And why does it work in C# but not VB.NET?
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