I want to fill an Array and list box from a table, with ALL of the records.
I DONT want to use Displaymember. Like shown below...
CODE:
This is the code so far, but it is only filling with the first record.
CODE:
I need to fill an array with whole column from database table, so i have used reader to read the values from that column, but can not figure out how to put them into array (code below doesn't work) [Code]
View 3 RepliesI'm trying to set up a form that I can use to sort names. What I've done is set up a table with with the persons name and info in it as well as one field for a platoon number, and my form is basically 5 listboxes. I want unsorted names to appear in the first box, and sorted names to appear in their coresponding listbox (based on the platoon number in the table). I set up a query through the wizard (from the listbox itself) that will pull the info that I want, but so far it seems to pull it to all the listboxes rather than just the one I want.So far I've figured out how to make the listboxes fill on form load or on a button click (though in both cases all the listboxes are filled with the same data).Eventually I'd like to be able to sort these names in the various listboxes by dragging and dropping, but one thing at a time.So:1. Am I going about this from the right angle or am I making this needlessly complicated?2. How can I get this to sort the data to the correct listboxes on formload?
View 1 RepliesI have been told that the best way to do a search in VB is to fill an array with ALL the records from a table in a database and then filter the records from the array, instead of using the SQL statement Where.
View 25 RepliesI am new in forum and in VB 2008 as well, I have a little background in VB6 I am making a program for a project and I need to calculate some mathematical formulas and the results I want to send them in an external device via serial port. To be more specific I have a function, like y(x)=a*x+y0. I get the starting and ending x and y from textbox and I calculate the respective y but I want to store each x and the resulting y(x) in order to send them after the completion of the complete calculation to the serial port.I have tried with datagrid view and dataset but I cannot fill the tables with the results.Does anyone have any idea what I can do.
View 1 RepliesAs the title suggests I have a ComboBox and 2 listBoxes on a form. I need to fill the left ListBox with items not now asssociated with the ComboBox selection and the ListBox on the right with items already associated with the ComboBox selection. Is it possible to populate the ComboBox and each ListBox using only one query and returning a dataset of ALL the data to do so, or do I need to Populate the ComboBox, then use 2 queries, one for each ListBox?
View 6 RepliesI want to fill a listbox with file names of the specific extention. This is my code , does not work.
lstClips_ListBox.Items.Clear()
If Not FolderExists = My.Computer.FileSystem.DirectoryExists(PowerPointDir) Then
MsgBox("This Directory does not contain any PowerPoint files" & vbCr & "You need to load the files now...", MsgBoxStyle.Information, "Warning - No Media Found")
[code]....
If i take away the DIR name and the Exten then it fills with ALL the file names, not what i want.
I'm using one Access Database and DataSet, BindingSource And Table Adapter. My question is: how to fill one listbox on my form with dates from one row from Database.
Look at the picture:
[url]
So listbox needs to have 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.
How to to this, code?
How can I fill this Percentage array with Sql data reader..
Dim StudentID As Integer = Me.ComboBox1.SelectedValue
Dim Percentage() As Integer
Dim con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=D:Database
[code].....
problem that i am facing is i want to add array of object as a single item in listbox. in vb6 i was using this Label1.Caption = Label1.Caption & Mid$ (strInput, intI, 1) & " " List1.AddItem (Label1.Caption) i was using label. caption to store object but not work in vs2008 because label.text only take text and left other values
View 18 RepliesI'm woking in aprogram that read sms from phone and show them in datagrid.berfore I link the datagrid to the database it read the show the message fine in the datagrid but now it show Error message
the code for the form load Code:Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0" & ";data source=" & Application.StartupPath & "SMS.mdb") Dim Mocmd As OleDbCommand = New OleDbCommand("Select * FROM TableMobinil", con) Dim myDA As OleDbDataAdapter = New OleDbDataAdapter(Mocmd) Dim myDataSet As DataSet = New DataSet()
[Code]...
my Code for fill datatable is :
n1.SelectCommand = New SqlCommand("Select Code from PriceDrystore where AirplanCode = '" & lblAPcode.Text & "' and substring(Code,8,1)='" & lblRoute.Text & "' ", DS)
n1.Fill(z1)result this code = 8 items
[Code]...
I just want to display data of a single column from an oracle table into a datagridview or a listbox for readonly with no requirements to make changes to it. Simply display the information.What is the best way forward... To used DATAADAPTER or DATAREADER.s DATAGRIDVIEW SLOWER TO FILL THAN a LISTBOX.i am using the following code to fill datatgridview but for some odd reasons at time it is slow to display the data. I want to use listbox instead
Dim ds As New DataSet
Dim adp As OracleDataAdapter
adp = New OracleDataAdapter("select customer_name from customers")
[code].....
ive a dictionary database with table having 32000 entries... ive bound it to the listbox(using binding source and dataset)... but when the program starts it hangs for 1-2 minutes in the beginning..
View 4 RepliesMy aim is to choose a value from Listbox1 and on Listbox2 I would like to display the corresponding value from a table in my database. I mean, when I select Product A from Listbox1 (which is getting its values from row "Model" in my database table), I should see its price on Listbox2 which is available in the "Price" row of the same table (and also manipulate this price in different places for calculation etc.) . I am not sure if the best way is using "databinding.filter".
Here is the code I have but I cannot making it work:
Dim dtCOP As New AmetailorDataSet.COPDataTable
Dim adapterCOP As New AmetailorDataSetTableAdapters.COPTableAdapter
adapterCOP.Fill(dtCOP)
[code]...
A small note: my aim was using a Richtextbox instead of Listbox but I am told that Richtextbox is not suitable for using with datasources.
I have a checked listbox that I've populated with a table that has three columns, Name, Address, Phone - and have done so successfully, but when i display the items in the listbox, i would like to retrieve additional values of the checked items other than the primary displayitem.[code]'we now have an array full of the Name column only, from our checked items 'i'd like to grab the other two as well (not to display in the listbox, but to use elsewhere as variables) 'and keep the checked listbox as a control in the above code, the fill_array variable is only populated with the items displayed in the checkedlistbox - my question is, can i keep the display item the same and pull the other two columns from the datasource, but only for the ones that make the checkeditems list?
View 5 RepliesI'm trying to display in a list box a two dimensional array using format string.The information for my array I'm getting from an external file.this is what I have, and I don't know how to fix this.
Sub DisplaySeatChart()
Dim fmtstr As String = "{0, -15}{1,-15}{2,20}{3,-15}{4,-15}"
For i = 0 To 9
[code].....
I am trying to export the contents of Array to Microsoft Access table. But as of now i could do it via creating a text file in the local HDD. I would like to find a solution bypassing this step.
View 2 RepliesI have a string array that represents the field names for a table I need to create. Given that the first field type is date, the second is time, and the rest are floats, what is the easiest way to create the table? I am currently using the following code, but it seems there may be a simpler, less convoluted way
vb
'read the column names from the OPC server
Dim colNames() As String = GetFileColumnNames().Split(","c)
'build command string used to create the table
[code]....
How to fill a listbox with data from a SQL (OLEDB) so that you can see one row of data with various columns to show the different values for that row,ie. all of the SQL statement as one row.[code]...
View 10 RepliesI've got the following txt file:
[code]...
Now I want that presented in the listbox with the semicolon and it should be aligned per column so that the numbers, the names, the prices and the quantity are exactly aligned per column.If I read the file like this:
[code]...
Then the semicolon is not presented in the listbox and I don't have any alignment per column. As the names of the woods are not equally long the prices and the quantity are not aligned directly below each other...
My questions are:
1) How to add the semicolon in the listbox as seperator of the columns
2) How to align the 4 columns in the listbox (as I have an array Item(3) )
Later on I need to be able to change the quantity (last column) from 0 to > 0 (that's why I have to use an array)
I have a datagridview which I have set up with the Form Designer and created 2 columns and set header names and column widths. When I try and fill the datgridview instead of filling the columns I have created two additional columns are appended to the right of the existing ones and the additional ones are populated leaving thje ones I created blank.[code]...
View 7 RepliesI don�t want to use built-in data binding through Visual Studio, I would like to learn and code directly. I have created a form with a listbox on the left side and several texbox on the right side. I have code working that populates a listbox from my data reader (MyReader). The listbox works fine. There are two (2) buttons over the listbox to select All Active records or All Inactive records that queries the field �Status� in the �tblAdvocates� table.So the listbox works fine. Problem is trying to setup the SelectedIndexChanged function. I can�t figure out how to take the selected record from the listbox and use that to fill the textboxes. Do I �re-query� the database using the ID field from the table? Do I use the MyReader from the form load code and pull the data from that?
Here is my code:
Imports System.Data.SqlClient
Imports System.Windows.Forms.ListBox
Imports System.Data
Imports System.Data.OleDb
[code]....
I am new to these forums. I had a VB.net class several years ago and cant seem to find this info in the text from the book used in the class. Here is what I would like to do. I have a 2 forms. One with three buttons and the other with a listbox. When I click on one of the three buttons (on form1), I want to fill the listbox (on form 2) with one of three arrays. is this possible, it seems like it should be.
View 15 RepliesI am trying to fill filenames from a folder into a listbox. Now what i want to achieve is that if in the folder there are 2 files with same name but different extension for example song.wmv and song.mp3 then i want to show only .mp3 filename in the listbox. This is how it works in VB6. PERFECT! How to make this code work in .net.
[Code]...
i'm developing an application for my graduation.I have a form with one picturebox, one list box and 4 text box and one button.I am tring to do this:the user fill the 2 text box with some values, and other 2 text box with the path to some images,and when user click on the button the list box will fill dinamically with values , and when changing it, the image of picture box will change with associated image.
View 2 RepliesIs there an easy way to get data from a table in SQL Express and put it into a Structure? The table has one string column and five bit columns. I'm using VB.net
View 13 RepliesI am creating a form for entering technical data about a part into an Access database. In the same form I have several ComboBoxs that need to have their lists filled from the same reference table in my database. I have a number and unit field for the twist and bending radius properties. I made the unit fields ComboBoxes and I am trying to bind them to referance table in my database called UnitsLength. The relevant structure is as follows....
Form: NewPartForm
Database: CableDataSet
Main Table: PartMechanical - with fields: TwistNom, TwistUnits, BendingRadiusNom, BendingRadiusUnits
Reference Table: UnitsLength - with fields: Unit, Shorthand, Conversion Factor
First tired the following settings....
Data Source: Other Data Sources > NewPartForm List Instances > CableDatase
Display Member: UnitsLength.Shorthand
Value Member: UnitsLength.Unit
SelectedValue: PartMechanicalBindingSource > [The associated unit field]
But the lists didn't populate.... Then I tried these settings
Data Source: UnitsLengthBindingSource
Display Member: Shorthand
Value Member: Unit
SelectedValue: PartMechanicalBindingSource > [The associated unit field]
But now every ComboBox displays the same value but still stores the data in the proper field... it just sets them all the same.
I have a data table with query inside, then i need to sent value of data table exactly in datagridview i made before.
View 6 RepliesCan someone tell me what's wrong here: Dim sql As String = "SELECT * FROM courses" Dim con As New MySqlConnection Dim dt As New DataTable(sql) Dim cmd As New MySqlCommand(sql, con)
con.Open() ComboBox1.Items.Add(dt)It doesn't show the courses.