I am also very new to visual basic, and need some simple advice from you guys. I basically have a button, text box and a .txt file.When the button is clicked, I need one of the entries in the .txt file (which are names) to be selected and displayed in the text box
View 5 RepliesI basically have 1x text box and 1x button. I also have a text file set out as follows:
Fred Alston
Samuel Takahashi
Toni Tyree
Tonya Engel
[code]....
Except there are about 60 names.When the button is pressed, I want a name to be selected at random and placed into the text box.
Im making a text based game that i need to randomly select different numbers of lines from a text file then pass them to a list box.[code]...
First the code needes to identify the 4th element then randomly select lines from lines that contain that element. The code needs to work out how many lines have a matching text to the 4th array then randomly select lines from that total no need for a maximum limit to that number.The same line must only been show the once at a time, but It can then be shown again on a different button click.[code]...
how can i select all inputs of thisweek entry.in my database i have fromdate and todate fields, now how could i select if i'm in anyday of the week but i have select to display thisweek activities. it will display into the datagridview all the activity setted for this week...exam in Microsoft outlook there, Day or today, and work week and month button..if i select today or day it will deplay in the datagrid all activties for the day, and if i select work week it will display activities for the entire week.. and month also...i'm using visual studio 2005 and access 2003
View 17 RepliesI am using VS 2008/VB with Access 2007. I have 2 forms that I use to create entries. In the first form (fomr1) I select the type of entry which opens the respective form (form. In form1 I use some code to read through a oledbreader the id rows and get the max value in that column. I take that value and I add 1 to it and then assign the value to a textbox in form2. The whole process worked fine until today which gives me this exception "An error occurred creating the form. See exception.innerexception for details. The error is Object reference not set to an instance of an object. "
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I have a form with a tic tac toe game on it. I have been trying to make it have a single player mode by allowing the computer to select one of the 9 buttons. However I can't even get it to select one of the buttons. Is there anyone out there that can help point me in the right direction.
View 3 Repliesrying to make a program that will pull a word out from a text file and put it in a textbox
View 2 RepliesAs in today i click on the button it will display the item when i hit again the button it will still display the same item and last for the whole. On the second day, i hit the button again it will display other items and last for thewhole day again.
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I just want to select 1 random record from my database for example in my table1 i have a,b,c,d,e,f,g then everytime i click the button in my program it will output randomly between a to g then i can add another record from my database and if I make it a to x it will randomly choose between a to x, the random doesnt have any conditions.
Right now i've found some codes that will be very useful but i cant modify it so it will be connected to my database.
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim DT1 As New DataTable
DT1.Columns.Add("SN1")
DT1.Columns.Add("NAME1")
[Code]...
I'm working on a program that will randomly select a loadout(weapon, perks, etc), but the user enters their current level to get the loadout. This is important because certain guns unlock at certain levels, so i don't want someone getting something they can't use.
I'm not sure what the best way of approaching this is. All i can think of is either getting a random item, checking if the user's level is high enough then if it's not high enough do it again.
I have 25 labels (Label1 - Label25). How can i randomly make the background of 1 label blue?I can set a random number in a variable, but I can't find out what to do next. It has to be something like this:[code]
View 1 RepliesIf I have say 5 numbers: 1, 29, 53, 95, 103 What would be the VB.net code for randomly selecting a number of those 5.
i.e) The random number has to be 1, 29, 53, 95, or 103 and has to be randomly generated.
I've tried using the Int(Rnd() * 104), but I do not know how to make it choose only these 5 numbers!
i want to get a random directory from a specified directory, for example, the desktop.
im not sure how to do this, this and the only thing I'm having trouble with for my application
for example i have 5 different directories on the desktop called
Dir1
Dir2
Dir3, etc...
i would like to get Dir3, then maybe Dir1, after that maybe Dir3 again, and so on. i want to get a random directory from the desktop...dont really know how to explain it any better...
A specified a directory - a directory that i specify maybe in a text box for example. or a folder browser dialog
also i just want to get the path of the directory, i dont want to do anything to it.
I want to select a random image from my resource folder and show the image in a picture box.
View 9 RepliesI need to grab just one row, and output its name and details properties to a sidebox on my page.So far I have come up with this, which is not working and giving cast errors between the entity and the list of.
Public Shared Function GetOneRow() As String
Dim db As New Model.Entities
Dim rowCount As Integer = (From t In db.Table Select t).Count
[code]....
I use this connection:
Dim connetionString As String
Dim cnn As SqlConnection
connetionString = "Data Source='" & txtHost.Text & "';Initial Catalog='" & txtDatabase.Text & "';User ID='" & txtUser.Text & "';Password='" & txtSenha.Text & "'"
cnn = New SqlConnection(connetionString)
cnn.Open()
cnn.Close()
How I read to SQL using "SELECT * FROM table ORDER BY rand()", select a random column and send the value "User" and "Password" of this column to Label1 and Label2.
I want to select a random record from a data source (based on an MS Access file), and place the record cell contents into certain textboxes. After the record is chosen, it cannot be selected again.
View 1 RepliesI was trying to at random select a listview item, I tried:
Dim random As New Random
Dim test As String = random.Next(0, formMain.ListViewSearchResults.Items.Count)
MessageBox.Show(test)
but this brings me back a "0".
I've tried to do this
[Code]...
but it wont select. Btw, yes the list is full of strings lol.
I'm trying to have this WebBrowser1.Document.GetElementById("box").SetAttribute("value", Random)" I want to have a random Text from selection like
[Code]...
I have images stored in my resources that I want to call randomly to use as a background for an app. How do I call them randomly
View 1 RepliesI need to select multiple random rows in DatagridView with keypress.Ex:
Row1 -selected
Row2 -not selected
Row3 - selected
I do have part of code that will update certain field in database on keypress, but i have no idea how to create multiple selection and display it on DataGrid.CTRL+Click is nice, but I would like to have option of selecting rows with keypress.In following code I am checking if certain field is marked for selection(i want to give user an option to start selection, exit program then continue selection later) but it allways select all rows in table (even if only one is marked).
Dim NumRow As Integer
NumRow = 0
Do Until NumRow = dbtShow.RowCount - 1
[code]....
My question is: What is the best way to select multiple random rows in code?
I have a picture box which reads in an image from a folder to display, instead of having the usual boring image I thought it may be nice to have a number of images in the folder and let my vb.net program randomly pick one out to use.
View 1 RepliesIt's possible to select random a column in SQL 2005 using SqlConnection? And this column to send "UserID" e " ChName" for Label1.Text and Label2.Text?
example: after choosing random the column, send "UserID" and "ChName" to Label1.Text and Label2.Text.
i have to write a simple Hangman game with sum extra features for bonus points.... the funny thing is i can write the code for the extra features such as "adding additional word, help menu...etc",but i cant write the main program,The program must select random word from text files, it have three difficulities, the codes should be the same for all three, just read from different files...(well thats what i think)... i think i hav to use array... but how do i read the contain of the text file into an array n randomly select a word?
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i am pulling together a cash register that will allow both bar code product entry and manual key entry.imagine if you have a tin of beans in front of you, in a small corner shop they would probably type "47" and then hit "Produce". Fairly straight forward as I have the button Produce to act upon my code and update my salestrans.mdb but,if you scan the bar code I want the same form to handle both 'real' actions, (i assume that keyboard emulation barcode scanner includes "ENTER" after providing 13 digits)....
Q. in perhaps a long winded way i want to know how to kick off an event based on the "ENTER" key being activiated by the barcode scanner)?i do not want to have to hit any buttons if i am scanning bar codes.
What is the code for ignoring the case of an entry while checking to see if the entry is correct or not... (i.e. in a flashcard program... given definition, asks for the name) I don't want the case of a character to affect whether the answer is correct or not.
View 2 RepliesSay I have a string like this:
"Hi My Name is {Robert|John|Wayne} and I like the color {blue|green|yellow}"
How do I select a random word in {Robert|John|Wayne} and {blue|green|yellow}?
I am trying to make a program with a bar code reader for the first time. I am programming with VB 2005. I want to differentiate a bar code entry to keyboard entry. My questions:
1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
I am trying to make a program with a bar code reader for the first time. I want to differentiate a bar code entry to keyboard entry. My questions: 1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).