VS 2008 Loading Large Table In Listbox?

Sep 1, 2011

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..

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VS 2008 - How To Display Colored Text With Large Font In ListBox

May 14, 2009

I am trying to put colored text into a list box. I use the following

Private Sub ListBox1_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles ListBox1.DrawItem
e.DrawBackground()
Dim myBrush As Brush = Brushes.Blue
Select Case e.Index
[Code] .....

This works fine and dandy as long as I use 8 pt font, but when I change the font to 20 I get the following: How can I get the list box to display colored text in a large font?

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VS 2008 Loading Settings Into A Listbox?

Jun 5, 2009

I was wondering if you guys could help me. I have a web browser made, and now i'm working on coding my favourites system. It is working well, and adds the URL to My.Settings.FavList

My problem is once you've added a favourite then load up the favourites form, it appears. But if you don't add anything, and load up the form, nothing appears. Below I have attached my coding, I hope you guys will be able to help. Also i'm still learning VB, and almost all of this coding was done through me learning myself. So yeah, there may be parts wrong. Form1 - This code is to add the favourite. I don't think anything is wrong with this part.

[Code]...

I know it has something to do with the Favourites_Load, i'm just not sure what to put in. I have literally tried everything. The thing is, I bet it's something simple, and this is a noobie question.

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VS 2008 Error Loading Txt File Into A Listbox

May 19, 2010

i'm trying to load a txt file into a listbox in this way

Dim FILE_NAME = OpenFileDialog1.FileName
Dim sr As StreamReader = File.OpenText(FILE_NAME)
Dim riga As String
riga = sr.ReadLine()readline
While riga Is Nothing

[Code]...

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Saving And Loading Large Amounts Of Data?

Sep 5, 2009

Is it possible to create a kinda virtual storage in a vb application so that data created during run time are stored right in the applicaion instead of its environment?

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Parsing/Loading A Large File With Unique Characters?

Feb 17, 2012

I am attempting to make an application that can load in a large file that has some unique characters in it. A majority of the file is plain text, and ultimately I need to replace specified values with other values.The file is an InstallShield .ILG file - I am trying to have a small executable modify the "Feature" GUID entered in the file so that future installations/upgrades identify the new type of features it has. It's a fix for some software issues that would really expedite the solve without having someone un-install and re-install the package each time.

The problem is regardless of the methods I've tried to load the file, it doesn't bring over the data. It's a unique file that I do not want to modify/parse any data in other then those specific fields. Anytime I attempt to convert it to string I just get a few characters that are blocks. I've attempted all types of loading methods within VB but it continues to fail.

I've gotten this utility to modify everything from the config files to the proper DLLs it needs to load and the registry it needs to change. But it's this one piece that regardless of my attempts I can't find a way to load and modify the ILG file.

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VS 2010 Loading Extremely Large(dimension) Images?

Feb 8, 2012

I'm trying to load this image file on a PictureBox but I get an "OutOfMemoryException was unhandled" error.

How do I allocate more memory for this? Or maybe use another container? My project's main feature is loading maps, unfortunately my boss wants to load the whole map and won't accept sliced version of the map.

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VS 2008 Fill Array & Listbox From Table

Jul 4, 2010

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:

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Large Listbox+SaveFileDialog?

Mar 14, 2009

I am trying to save a large listbox (with over 200,000 celebrity names (items)) with SaveFileDialog.

Dim i As Integer
Dim Temp as String
Temp = ""
For i = 0 To ListBox1.Items.Count - 1
If (i <> 0) Then

[Code]...

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VS 2008 Loading Listbox Items From .txt File And Code From .txt File?

Feb 24, 2010

Ok here we go again, im a complete beginner to coding and have started with visual studio 2008 using the .net/vb libraries, as my first project i went with an emulation application, and it went great:So now i think its time to move onto a little more advanced tech's, so i added in a combo box and i want to change how my code works, and this is where my troubles are.To start of with the combo box, i have it added to my winform and have 3 items on it 'Action' 'RPG' and 'Sim' and i have made 3 .txt files in the projects root folder with the same names. What i want to have happen is when the user selects for instance 'RPG' from the combo box the items displayed in the listbox change to the contents of the rpg.txt file. After searching around for a few hours and no luck i tried this

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
If (ComboBox1.SelectedItem = "RPG") Then

[code].....

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VS 2008 : Display A Value From Data Table To A Listbox According To A Condition?

Jul 28, 2010

My 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.

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Add A Large List Of Items In A Listbox?

Aug 9, 2011

I have a large list of keyword and I want include this list in a listbox .How can I do it?

I tried by paste the list in the collection control but by this way the listbox allow only a small amount of keywords.

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VS 2008 Checked Listbox Populated By A Table Then Retrieving Values

Feb 7, 2010

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?

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Text Editor - Loading Multiple Large Text Files

Jul 10, 2010

I'm fairly new to VB.NET, and I'm working on a text editor with a tabbed interface. I deal with large text files. Should I have each tab / text document open up in a new thread or a process? I basically want the entire application to always run fast as the text editor is just one part of it. If I have several large text files open I don't want the rest of the application slowing down a bit.

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Read A Very Large Database Table In Program?

Apr 22, 2011

I'm developing a VB.NET application to obtain data from any data source (using an odbc connection string), and because this i can't use specific .net connectors like MySql.Net connector and i can't previously know if the file/DMBS supports LIMIT parameter. This app will read data from a table in the data source and use the information to make some files. At this point there was no problem with some tables because they are less than 3,000,000 records length, but there is a table that has 5,000,000+ rows length, and when i send the query the connection is lost. I'm working with OdbcDataReader, because i read on MSDN site that this is the best way to read a table one row at time and i just use each record once.[code]...

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When I Copy A Large Table, The Data Gets Corrupted?

Feb 7, 2011

This is a problem with MS Access, but I can't seem to find an MS Access Forum, so I'm asking it here.I have a large table of just one field. The field type is Byte. I use CTRL C and CTRL V to make a copy of the table.I then compare the Source and Destination tables and lo and behold they are different at about record number 8 million.I also tried an Append Query to append to an empty table (I haven't tried a Make Table query).But, similar corruption.The source and destination tables do not end up the same. The Record where the failure occurs varies, but it is always greater than 8 million.I tried this on MS Access 2002 and 2010 (both with an Access 2002 database).

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.net's ListBox Data(large) Takes Too Much Time To Show Up?

Jun 24, 2012

I ran into a problem where the listbox is taking awfully long time to show up. This is not the same in java(It took very very less time - one second max). So, is there any remedy to this??, any other form control??, or some other way?? imports System.Threading imports System.Windows.Forms

[Code]...

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Read A Very Large File Line By Line Instead Of Loading It All?

Feb 25, 2009

the best method to read a huge file? I'm guessing its with "stream"?It's like a 200mb file.I need to read each line and do something if the line contains a search string.

Code:Imports System.IO
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim strFile As String = "c:

[code].....

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Display Large Varying Table In A Windows Form?

Mar 31, 2010

I need to display 3 columns and a varying amount of rows (typically around 50) in a windows form, kinda like excel. The data will likely be longer than the window, so a scroll bar will have to come into play somewhere.

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Loading .txt File Into Listbox?

Feb 19, 2009

When I get ready to load the .txt into the listbox, it says that there is an error, yet I have no compiler errors. Here is my assignment I am having trouble with:

Public Class Form1
'Define the Members Structure
Structure Members

[Code].....

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Loading The Data To A Listbox?

Mar 25, 2009

I have created a project with a search form. add new record form and a also have an edit record form.Under the add new record form I have added an attachment button an a opendialog where I can select multiple files, so far this is working great, then I add the name of each file that I select and added to a listbox, so far so good,for example:

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Loading Txt File To Listbox?

Jun 3, 2010

I'm trying to load the contents of text files into a listbox. It loads the file fine but adds an extra character at the end. I have a feeling it has something to do with my Split command but I'm not sure how to fix it.

Here is what I have:

Dim ofd As New OpenFileDialog
ofd.Filter = "Text files (*.txt)|*.txt"
Dim result As DialogResult = ofd.ShowDialog

[Code]....

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Loading Array Elements Into Listbox?

Mar 7, 2009

why my code doesn't work? I want the array elements to be loaded into a listbox when the button is clicked. Is it because not all elements in my array have been filled? I've tried putting the array declaration as a global variable and as a local one (below), but the same error occurs as soon as the button is clicked - "ArgumentNullException was unhandled".

Private Sub btnLoadCustomerNames_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoadCustomerNames.Click
'String array holds maximum 100 customer names

[Code].....

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Loading Custom Listboxitems In To A Listbox?

Jun 7, 2011

I'm loading custom listboxitems in to a listbox.But the problem is that i load over 300 items and it takes a while and the program stops responding.I've tried to load the items in a backgroundworker, but i didn't help.

Note: the Listbox is placed on a Page.

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Loading Image In PictureBox From ListBox

Jun 28, 2010

I want to make a program similar to this one: [URL]. I already have the ListBox ready. But how do I load the images?
The image name works like this:
-File1.package
-File1A.jpg
-File1B.jpg
So the .package is removed and A.jpg or B.jpg is added.

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Loading Sorting Items In A Listbox?

Jun 22, 2010

am havin a problem in loading sorting items in a listbox. what i want is after i load a text file into a listbox the items are compared by the last number and sorted in descending order.

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Loading Text File Into Listbox?

Feb 5, 2009

So i have a text file that is created in the program which can be loaded back into the program(game save)

Whatever is in the text file "stats" should be listed in listbox1 in the same order it is in the text file. The same with "items" in listbox2. And then "quests" will be in listbox3.

The problem is when i load it instead of what is in the text file it says...

note that box3 is correct that it has nothing in it.

[Code]...

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C# - Loading Access DB Table To Datatable?

Mar 3, 2010

I have a database in .ACCDB format with some tables.

I'm successfully loading it into an OleDbDataReader with the following code:

string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;data source=C:\marcelo.accdb";
OleDbConnection conn = new OleDbConnection(connectionString);

[Code].....

I'd like to load the table "clientes" to a datatable instead. How should I do it ?

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DataGridView - Loading Each Table Of XML File?

Nov 9, 2010

I am facing a "weird" problem with the DataGridView. In fact, I have a function, that loads each table of an xml file into a datagridview (27 tables all with same structure except one called Listes). In the datagridview I have a combobox column to select "type" (it's the 3rd Column, so it's index is 2 normally). The problem is that when I call the function loaddata for the first time, all work perfectly ! If I call it for a second time, to reload the data, I get an error of cast! I verified and it seems that first time I call the function the column that contains the combobox is column(2), but when I run it again automatically the indexes of the columns are changing and am getting the error, because the column that contains the combobox is becoming column (3) and that explains the cast error because the column'(2) is not anymore the combobox so the cast will fail ! What I can't understand is why it's reordering that way my columns automatically ?

Here is the code:
vb.net
Sub LoadData(Path As String )
Dim oData As DataSet
oData = New DataSet
oData.ReadXml(Path)
Dim i As Integer
Dim MaGrille As DataGridView
[Code] .....

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Loading Dataset From Database Table?

Mar 11, 2009

how to load the contents of an Access Database table into a Dataset? The Access Database consists of multiple tables with different data table names but all tables has same row header and same data type.

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