Declare That My Column 4 Should Accept Integers Only?
Jun 6, 2011How do I declare that my column 4 should accept integers only?
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DataGridView Input Validation - Certain Column On Datagridview Should Accept Integers Only, Otherwise, It Will Return A Messagebox
Jun 5, 2011Some codes here on how could I validate my datagridview? I mean, a certain column on my datagridview should accept integers only, otherwise, it will return a messagebox. Kindly include on which event it should be posted.
View 17 RepliesDeclare A Two Dimensional Array Of Integers?
Feb 2, 2011"declare a two dimensional array of integers named intgrades.it should have 30 rows and 10 columns
View 1 RepliesDeclare An Array Of 20 Integers To Store The Answers ?
Jan 29, 2009I am looking to declare an array of 20 integers to store the answers to the questions, and then for the next button i am looking to get the answer and write it to the array. If one radio button is checked then i want it to write 1 to the array. Then finally i want to write the username, the array of answers and score to the txt file. How can I do that?
below is my code i have so far:
Imports System
Imports System.IO
Public Class Question
[Code].....
Set The Limit Of A Certain Column To Accept 10?
Jun 11, 2011how to set the limit of a certain column to accept 10 the same inputs only. I have a table named Date and I want to limit its content for the same inputs to 10 only cause 10 person only can have the same date.
View 14 RepliesBlock A Column From A DGV To Accept Only Hh:mm Style
Jan 3, 2011How can I block a column from a datagridview to accept only values like hh:mm style and nothing else. And how to handle errors when user is inserting something else than time format?
View 2 RepliesDataGridView Not Allowing Integers / Doubles And Strings In Same Column
Jul 14, 2011I am using an oleDb connection to connect to an excel spreadsheet (.xlsx) file and load the information into a datagridview. From there I hope to have it edited by a person and programmatically at runtime. However, I noticed that when I import a file that has integers in a column, it will not import any of the string values in that column. Also, It will not allow me to manually enter strings into that column at runtime - it results in an error stating: [Code]
View 16 RepliesVS 2008 : Set A Column To Accept Only Unique Values?
Nov 30, 2009Is there any way to set a column to accept only unique values?(Via Table Definition)
View 2 RepliesIDE :: How To Make Column In Table To Accept Only 2 Types Of Input
Aug 17, 2009I am having a problem on setting the SQL CE table column a field type. What field type does a column that only accepts only two inputs..
Example: If a table has a column named Gender..it should only accepts two types of input...like Make or Female.
Application That Will Display Positive Integers / Negative Integers And Zero Entered In A InputBox
Mar 20, 2010I 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]
View 6 RepliesDeclare An Array Of Mixed Type [e.g.] Column 1 As String, Columns 2 Through 5 As Integer?
Oct 18, 20101] Is there a way to declare an array of mixed type [e.g.] column 1 as string, columns 2 through 5 as integer.
2] Is �Dim myArray( ,5 ) as type� a valid statement and if so will it result in a 5 column array of unspecified length?
Array Of Integers Comparing Integers?
Feb 2, 2012Basically 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.
Input - DataGridViewTextBoxColumn - Column Should Not Accept Input Of Data
Jul 29, 2009On geting input into DataGridViewTextBoxColumn but the column should not accept input of data that is not integer like; 10003, 2.00, 1500.00
View 3 RepliesAccept Only File Word And Pdf File And Other To Accept Only Images
Jun 2, 2011One to accept only file word and pdf file and the other to accept only images(.jg|.bmp|.png|.gif)
View 1 RepliesAdd A Checkbox Column At First Column Of Datagridview Including Column Header?
Apr 9, 2010How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
View 27 RepliesAdd Up The Sum Of All The Even Integers From 2 To 50 In VB?
Jul 6, 2011this is what i need done add up the sum of all the even integers from 2 to 50 in VB?
View 1 RepliesGetting Only Odd Integers
May 28, 2009I'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?
View 5 RepliesChoosing Between 4 Integers?
Feb 18, 2010I 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.
View 1 RepliesUsing Integers In A For Next Loop?
Apr 8, 2010Id 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]...
Find Average Of Two Integers?
Apr 25, 2011What 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.
View 5 Replies.net - Dealing With Large Integers?
Apr 19, 2012So 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?
Adding Integers In ListBox Using For Next?
May 4, 2011I need to add integers in a listbox, using for next.
Dim intCount As Integer
Dim dblTotal As Double
' here are the lines of code that will perform the calculations
' to create a grand total.
For intCount = 1 To lstCosts.Items.Count
dblTotal += dblSubTotal += intCount
Next intCount
lblTotal.Text = dblTotal.ToString("C")
The amount of items in the list box is not seso I used the items.count. I have been getting the wrong result.
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
' Declarations.
Dim intCount As Integer
Dim dblTotal As Double
' here are the lines of code that will perform the calculations to create a grand total.
[Code] .....
Bug On Rounding On Division And MOD Of Integers?
Feb 11, 2012I have a group of 25 labels named Label1, Label2, Label3, ... Label25 in a square of 5 per row, 5 per column and I wanted to assign the backcolor to all of them on a loop and assign a value of "True" or "False" to a matrix of 25 boolean values representing them.
But I was getting errors on the pattern created.
My approach was to use a substring containing a number copied from the label names:
Num = Val(sender.name.substring(5))
And the subindexes of the matrix:
p = (Num - 1) / 5
q = (Num - 1) Mod 5
The values for the lower corner of the matrix were rouded to 5 instead of being 4. Instead of (4,0) ,(4,1), (4,2), (4,3) (4,4) I was getting (5,0),(5,1)...(5,5)
So I solved the problem by creating two single variables "A" and "B", doing the divission and MOD operations on them, finding the floor of them and then converting to integer:
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _
Label1.Click, Label2.Click, Label3.Click, Label4.Click, Label5.Click, _
[Code]......
Change The Integers To Words
Feb 15, 2012I have made a simple program for invoices, e.g. The total amount is coming 48,950/$, How to appear this amount in words "Forty Eight Thousand Nine Hundred and Fifty, through MODULE.
View 2 RepliesCheck For Null Integers?
Jul 8, 2010I am working on a program that has many integers (q1, q2, etc.), and each of them can be 0 or 1. This is dependent on which radiobuttons are selected. I need it to check and make sure that all of the integers have a value, but since "Null" is the same as "0",
View 8 RepliesCompare Strings And Integers?
Feb 10, 2011I suspect there is something wrong in my application, specifically in a part where I have to compare a couple strings and a couple integers.
I do something like this:
If myString = myOtherString Then
do something
End If
And the same thing for integers.
However, for some reason, it is not returning true... also, I heard somewhere there were more proper ways to compare strings and integers.
Comparing Integers Using (And) In If Statements
Jul 11, 2011I have a method that I want to check to make sure that both integers entered are both positive:
Public Function BothPositive(ByVal num1 As Integer, ByVal num2 As Integer) As Boolean
If (num1 And num2) > 0 Then
Return True
Else
Return False
End If
End Function
Now if I were to enter some numbers in
BothPositive(1,1) = True
BothPositive(1,2) = False
BothPositive(-10, 10) = True
Why is this? What is going on with the order of operations in the comparison statement or what is the "And" trying to compare? I don't see why this wouldn't work.
Convert Hex And Integers To Binary?
Jan 15, 2010How do I convert hex and integers to binary?
View 5 RepliesConvert X And Y Integers To A Point?
Mar 2, 2009I;m trying to learn from vb 6, and am having trouble with the simplest of things. I got a function that needs a point, im trying to feed it my 2 x and y integers and it can only accept a point. How can i convert my 2 integers into 1 point.
View 2 RepliesDistinguising Between Letters And Integers?
Jun 4, 2009I have log files that are filled with a lot of content. All of the lines in these files read simliar to the two examples below:
2006-06-16 06:40:25 00.11.111.222 englased 172.16.3.4 80 GET /XXX
2006-06-16 06:35:00 222.222.111.111 GBEDEYA 172.16.3.4 80 GET /XXX
2006-06-16 06:35:01 222.222.111.111 CEADETAA 172.16.3.4 80 GET /XXX
From line one i need to extract englased, from line 2 GBEDEYA and so on.
I know that all the lines have GET, and basically I only need to exact the letter from the begining until GET to get what I need.
So i would read each of these strings until GET and gets the Index. Then I would need to record all the characters that are letters from 0 until GET (ignoring all integers and special characters).