I want to do is have textbox1.text show 10-20 characters that are random letters and numbers when i press button1. I have tried to do this but I am not so great with generating anything that is random. If possible have it be a mix of Capital and Lowercase letters.
View 1 RepliesQuick question here about how to get it to accept capital and lowercase letters. I am running code that has certain Customer Types such as "T". It returns different information for that customer. There are only 3 types "T", "R", and "C". The rest return the default information. When I enter "t" into the textbox it returns the default information, not the information for "T". How do I go about getting it to accept "T" or "t"?
View 4 Repliesis there a code for generating random letters and numbers?? like between 0 to 9 and A to F??
I used this code :
[Code]...
I use for example:
Dim S As String = TextBox1.Text
if(S.Contains("BlaBla") Then
' ..
End If
But when I use blabla in my textbox it doesn't work..How Can I ignore the capital letter or non-capital letter function?
I am using Visual Basics 2008 Express edition. I want my program that I am making to generate a random amount of numbers and letters in this form when I click Button1.
WM9RX-GG6J2-4WKD9-FDJWM-TYH76
Is this possible?
I have encrypted a string to something like this:
1. Asak2$)kla1015QAXKFskfa332aSJ2(Ska@Skljcmcel3p.lq,aowpqaskla2@)Skx.:Pdm^),dfs;
what i want to is convert this string to something like this
2. JXK2LB AP2WXB S1P0XE ZXPA3H X1LAKW DOXPS3
both 1 & 2 the above strings are fictitious (i made them up to make my point clear)
I am trying to make a licensing system for my VB 2010 express application. (2) above will act as a serial key which can be derived from (1) which is an encrypted form of something unique of the client computer.
I will then confirm the (2) from the client.
I want to do something along the lines of
txtCapital.Text = "Berlin" Or "Lisbon" Or "London" Or "Madrid"
but Visual Basic.Net says this is an invalid cast exception.Is there another way to create a random selection of for example a capital city from a list and then put into a text box?
Anyone know how to use the Len function to return only the capital letters of the string (for instance, APple would return 2)?
If not, is there an alternative way to return the count of the capital letters within a string?
I want to know on how to convert small letter to capital letters. I want to convert every letter automatically once I press the keyboard. Im going to wait for your replies.
View 7 RepliesI have a datagridview with 4 columns bound to a datasource. In the first column the user can only type numbers, in the 2nd, 3rd and 4th only letters (done with keypress and editingcontrolshowing).
Now I want that the user's input in the last two columns automatically gets converted to capital letters, regardless whether he is using Shift or has Caps Lock turned on.
[URL]
Private Sub DataGridView1_EditingControlShowing(ByVal sender As Object,
ByVal e As DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing
[Code].....
My only problem is that when I double click a cell in the 3rd or 4th column (those where I want uppercase letters) and then one in the 2nd column, the text in the cell in the 2nd column is showed in uppercase letters too.
Note: It only shows the already present letters in uppercase. If I type extra letters they will get normal font (so lowercase if I don't use shift or caps lock, and uppercase if I do use shift or caps lock). If I don't type any letters and unselect the cell the text changes back to as it was before selecting.
If I double click another cell in the 2nd column (after i clicked one in the 3rd or 4th column and then one in the 2nd column), the present text stays the same, so it don't get showed in uppercase letters.
how it comes that only the first time that I double click a cell in the 2nd column after i clicked one in the 3rd or 4th column the present text gets converted to uppercase letters and, more important
I would like to post a XML file to a URL using VB 2008 but am having an issue.
Here's what I tried:
CODE:
This works.
CODE:
how do you search a string for capital letters, is there a function I can use to return to me how many capital letters are in a string? I have tried searching this but as yet not stumbled across a function. Most functions I found converted lower case to upper case Etc. I thought InStr might be the one but still looking for information on that one. I did find something along the lines of .char.isupper but the textbox is .text A password 'rating' tool of sorts of which I use a counter so if I enter "STRing" in the textbox for example it will return a 3 add it to the counter and continue with the little algorithm which my rater uses to add up things such as numbers or special characters to get a final score and that indicates to the user how strong the password is.
View 2 RepliesI need that a particular column in a DGV necessarily be written in capital letters, without the user having to press "BloqMay"... for the rest of columns the user will write normal.
View 3 Replieshow to write only capital letters into textbox and also into combo box.
suppose if user writes 'abc' in above defined control then vb should to display
it in 'ABC' into textbox or in combo box.
If I have a RichTextBox and want output like the first line is a font with capital letters and bold, while the next line on the contrary, what should I do?
output like this:
MY NAME IS
Diana
My address is
China
I'm searching for specific string method that ignoring the word if it was written in capital or small letters when I want to type this word in a field for searching purposes or when a user wants to enter its usrename in capital or small letters.
View 5 RepliesI have to make a program that uses 2 arrays, one with the states name and one with the capitals names. I have to make it to where it randomly selects a state and asks you what the capital is, and gives you 4 choices in the 4 radio buttons provided. My problem is getting one of the randomly selected answer choices to be the Correct answer.
Here is my code so far:
Public Class USCapitals
' Declare module level variables.
[Code] .....
Im developing an app at the moment where standard letters need to be generated to be sent out to customers. With the customers details then filled in as you would expect... name, title, address, etc. This is an app ontop of a SQL db. The way i envisioned this working was to send the customer details to another form that had a crystal report in, and send the info via a SQL query, just as you might get a grid view to open with a query.
Thing is im struggling with it, getting the query to work especially. Ive built the report and put the relevant field place holders in there, but i cant get it to open with just the one customers info in there, it gets every customer and builds a report several thousand pages long! This is because of the "command" thats on the report that i stuck in there on a temp basis while i designed the thing.
However i want the the report to open via a button on another form, and then fill the report with the customers details (using the customer ID number on the form the button was clicked) Since im struggling with this so much, im actually wondering if im going the best way about this? Are there better ways of generating a standard letter that the end user can then view, check it, and hit print?
I have created a scrabble game that generates random letters. For the user to type in a word using the random letters they have to type it in a text box.
I want my program to prevent users from typing in letters that are not provided in the text box and to allow them to type in the random letters that are provided.
VS2010 (SP1) / .NET 4 on Windows XP. The question is simple, the answer; not so much. When generating a salt, should the LENGTH of the salt be random, fixed or a random number within a (min/max) range? I am using RNGCryptoServiceProvider to generate the salt, just unsure of the length of the salt.
View 12 RepliesI'm wondering how I would go about generating a random number in VB.Net. As I am developing an ATM system for a bank, a randomly generated 4 digit PIN code would have to be assigned to each person.
View 2 Repliesi am working with Visual Basic 2008 and i wanted to know how u can create a random word?
View 8 Repliesi have a few questions about generating random numbers:1) is it possible for the programme to generate a random number that it has previously generated (i.e could it produce the same number more than once?)2) can you specify what numbers to generate? e.g only whole numbers up to 1000?
View 4 RepliesI have to generate a series of random numbers, say 100, within range of -1 and 1 and scale them by a value, say square root of 2. After which I take those 100 values and their sum = 0. Then scale that sum by another value. Check the code below to see what I mean.
[Code]...
I have an assignment that requires me to create 5 different arrays: nouns, adjectives, verbs, prepositions, and articles. From those 5 different arrays, it has to display 10 different random sentences in the listbox named lstRandomSentences. The sentences have to be in the following order:
<article> space <adjective> space <noun> space <verb> space <preposition> space <article> space <adjective> space <noun>. Each of those arrays have to be randomly chosen in the list box and that's what I am having trouble outputting randomly.
I am trying to make a number be generated as this Windows Form loads, then the user guesses by entering a number and clicking a button to check whether it is correct or incorrect.
I have the code complete, I'm just confused on how to declare the random variable outside the button sub procedure so it only generates one time.
Here is my code.[code...]
I'm using VB.NET 2008 Express Edition and I'm trying to create a simple program that will roll a number of dice I choose. It does this by generating a random number within a specified range (I'm rolling 3-sided dice in this case so I'm generating numbers between 1 and 3) and adding each number to a textbox to create a total of all the dice rolled so far.
This is my
Private Sub butRoll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butRoll.Click
Dim RandNum, i As Integer
Dim RandomClass As New Random()
'if at least one dice is rolled
If txtD3.Text > 0 Then
[Code] ......
Now the problem I am having is that although my random number generator is generating the right numbers (confirmed by checking the txtLastRoll textbox), when I add it to txtTotal, it seems to be getting another number from somewhere and adding that to my random number then adding it to the total and I have no idea how this is possible! txtTotal always starts as 0 but txt1 is not showing that. Normally I would just set txtTotal to 0 there but if I do that, I won't be able to add the numbers together. I've tried finding a pattern in the mystery numbers appearing in txtTotal but they just seem to be random.
I am working on an application, where I have already normalized the databases. Now I am creating an application in asp.net with vb.net as my code behind fine. These random numbers would be stored in the Id column. So, no way there would be repeating the keys. But my application could generate the key, which would probably get repeated. How would I check the database for, so that random numbers wont get repeated? is there any function? Could you give me the code for the same.
View 10 RepliesIam doing a project in vb2008 for a quiz program. i want to randomly generate questions in a textbox a question should occur once in the quiz session. i had my code:
Imports System.Data
Imports System.Data.OleDb
Imports AgentObjects
[CODE]...
How would I go about doing this, is there a for next loop involved and is there a way not using the for next loop ?
View 15 Replies