It'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 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 have a Infragistics ultragrid with a checkbox column (no binding on the checkbox column) need the user to only have one check box selected at a time. If a checkbox is checked and the user checks another row I need the first checkbox to uncheck. I am new to infragistic controls, so I apologize if this is a simple property that I have not found. But I have searched the forum and KB to no avail. Do I have to rip through the rows and uncheck all rows but the active one?
View 1 RepliesI have added an unbound checkbox column to my DGV. I have two questions on handling it:
1. How to have a checkbox on this Column header, which on checking must check all the rows in the DGV and vice versa?
2. How do i get the Boolean value of the checked rows in DGV on event handling? In other words, how do i know what rows are selected?
I 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 am creating class libraries in my project so that I can update code without having to update the whole app.I created a class library project and added some code to it. I also added a reference to System.Data.SqlClient and also imported it into the class file.I am getting an error and I have never seen it before. Been looking online and not able to find an answer yet.
View 2 RepliesIm trying to make it so that the user can pick what column to see and what now to see. How would I make it so when the user right clicks anywere thats on the column name show a contexmenustrip?
View 3 RepliesHow can i make a textbox so like when a button is pressed how can i make the textbox select a random text and put it in its text box.
View 7 RepliesUnable to select multiple column in datatable
Code:
Dim Activitydtb As DataTable = DirectCast(ViewState("TalentcharacterActivty"), DataTable)
grdviewactivity.DataSource = Activitydtb.Select("SELECT
[Code].....
i want to know how to download sqlconnection data component, which site i can download....
View 3 RepliesI'm writing a help application for the Customer support team at my company to help agents ask better questions when customers report problems. In it, I've got a SQL database that contains all the products, topics, and questions. The layout is similar to the following:
Products Table:
Product_ID Product Name:
Topics Table:
Topic_ID Product_ID Topic
[code]....
I don't know if I'm making myself clear, but I basically need to do the equivalent to the following SQL statement: "SELECT PRODUCT_ID FROM Products WHERE PRODUCT_Name = LstProducts.SelectedValue"
I am going to make a invoices then.. they are going to have a id it is not going to be identity, it is not my idea, this is the idea's my professor's. then he want it so..he didn't want i change id to int, he want it was varchar..but now i have seen this is as identity.. id =1, next id=2, next=id=3.. but it doesn't mind he told me in the future it is going to be so..
abc000002
abc000003
abc000004
[code]....
then for that he doesn't want i change it to int how can i get the last? i want it one plus next i want it was
abc000010
how can i do it? i am working on visual basic and visual studio 2008i can use a loop-for, or a query for solve it?
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.
[Code]...
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 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'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 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 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.
I 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 Replies