VS 2008 Loading Database In The Background
Oct 4, 2010
I am loading an access database in vb.net using
me.adaptername.fill(me.datasetname.tablename)
The thing is that this takes a lot of time and the program doesn't move on to the next line until it finishes loading all the data. Some of these tables I need only later but I don't want to make stall work while doing it. Is there a way to load a database without waiting for it in the code. and a way to check if it finished loading in code. this way i'll be able to load it in the backgroud after the program has started and if the user wants to use options which require tables which weren't loaded yet i'll be able to know and avoid errors.
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Jul 28, 2009
i have me a database (.sdf) which loads its records into a listview. One of the database, due its size, takes some time before everything is loaded. I'm using cursor.wait atm, but it I guess there's a more professional approach.
How do I show a progressbar while loading the data?
Here's a small piece of the code I use to load the data:
[Code]...
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Jun 15, 2010
I'm trying to build a music player app. I want to have it set up so the user can choose your own background from picture files on your computer. The code I'm using to save the registry file is:
Private Sub MusicPlayerForm_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
My.Computer.Registry.SetValue _ (m_strKeyName, "BackgroundImage", Me.BackgroundImage)
End Sub
The file is saved and I can see it when I use the regedit. The problem I'm having is loading the file. Currently I have:
Private Sub MusicPlayerForm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Timer1.Start()
LoadDefault()
[code]....
The error message I get is 'System.IO.FileNotFound Exception'. For some reason I don't think the files' getting read.
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Sep 19, 2011
having trouble understanding databases in visual 2010.
I have a database, which is loaded into a table adapter when the form loads. I want to assign each column of the table adapter into an array
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Oct 17, 2011
I am developing a windows application.In that I am loading Menu dynamically from database.And on MenuItem_Click event I am opening the forms with respect to the clicked menu.For this I have a code as
Select case MenuId
case "1"
form1.show[code]....
Now What I want is: I want to save respective forms for the menu also in the database so that i dont have to write select case. so on MenuItem_Click event my should look like
form(value from database associated with clicked Menu Item).show
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Jan 13, 2010
i have a custom SiteMapProvider which I populate from a database. I also have a custom SiteMapNode which has to be constructed with a custom Page argument.[code]Should I return false in AuthorizeCore() to have everything work according to default authorization protocols? (What are these?) Or should I throw my exception.SiteMap.CurrentNode is Null / Nothing (in AuthorizeCore()) if the page which is requested is not accessible to the user (obviously). How should I change my implementation? I want to keep the functionality that the Page objects are only loaded once, so I need to store them somewhere.
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Apr 28, 2009
im trying to load a database and I get this error.
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May 8, 2011
i have access database connected to application.. i have a table in database called "clanovi" (members) and first column items loaded to combobox their name and surname..now..when i select one of them from combo box i need all their other info loaded into several text boxes..adress,email etc..all of that info is in the same table ..i need some example code too .
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Sep 13, 2010
I'm thinking about using the treeview for creating a phonelist. The issue here is that I can't think how to load the data into the nodes according the group they are categorized in.
Here's a screenshot of my test_database:
So there is an ID and a row with groups (groep). What I want is that when loading the data a DISTINCT node gets create for each group and that the person is added to the sub-node. Got the faintest idea where to start.
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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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Feb 9, 2012
I have a code wherein datagridview will load according to the query given.I have no problem with that but when i put a loading image while reading the database, loading image wont work as well as if i put only "Please Wait" to a label.I searched from google and said that backgroundworker sahould use to this problem. But how can i use the backgroundworker?i have no idea about it.
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May 9, 2011
i've got access database connected to my project,i can read,write and delete records in it..what i need now is when i select one item from combobox (which is connected to table "clanovi"(members) and it loads their name and surname which is the first column of that table..now when i select one item from that combobox i need other info of members their adress,email,city etc to display in seperate textboxes..this is the function that my friend made for me..it connects to the single table in database,in this case to table "clanovi" .
Public con As New OleDb.OleDbConnection
Public dbProvider As String
Public dbSource As String
[code]......
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Dec 30, 2009
I am using Dynamic Textboxes. I am Loading table in Datatable from Database. From that Datatable i am naming the textboxes. After entering some values in the textboxes during runtime, i want that values to be added to the database. So i Coded as below. But i am getting errors as value of type '1-dimensional array of System.Windows.Forms.Control' cannot be converted to 'System.Windows.Forms.TextBox'.Here's my coding
Private Sub btn_click(ByVal sender As Object, ByVal e As System.EventArgs)
[Code]...
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Jun 6, 2009
Code:
Sub laad_leden()
Dim myConnection As New connectdb
Dim tabel As New DataTable
[CODE]...
While loading the data to the program the window freezes. It shows the progressbar but the progressbar is also freezing. How can i let the progressbar marquee while loading / freezing.
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May 6, 2009
I've got a database that's 13,000 lines long and I'm trying to load this into a string array when the program loads but it takes approx 5-6 minutes for it to load it.I've got a MS Access database or an Excel file that I can load this information from, each has two rows: SVONo, Description This is my current MS Access
[code]...
Does anyone have any idea of how to make it faster? Or does anyone have a better way?I did have the idea of loading it by letting the user select the first letter and then only loading the ones that begin with that letter but I've got 4000-5000 'S' ones and it still takes about 2-3 minutes to load it All I want is to load the data from the database or the excel file and then put the products into 'cboProducts' and the 'cboProducts AutoCompleSourceList' and the descriptions into the 'txtDescriptions' AutoCompleteSourceList and a string array.Then when the user selects a product using 'cboProducts' the description will automatically be put into 'txtDescription'.
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Sep 12, 2011
I need some help with this project I'm trying to get my program to load and save data to an online database and I haven't been able to find anything that helps me to much, I have the working code for a local database but this program will be being used to multiple people for our business I want everybody to be able to add data, delete data, and such as necessary...
Here is the code i have for opening the file on my local machine
Dim con As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|data.mdb;")
but i can't get it to open from my webpage
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Jun 6, 2009
Sub laad_leden()
Dim myConnection As New connectdb
Dim tabel As New DataTable[code]....
While loading the data to the program the window freezes. It shows the progressbar but the progressbar is also freezing.How can i let the progressbar marquee while loading / freezing.
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Oct 22, 2009
i am trying to load a filter on load of a report in my database. here is the line of code, i know i am close but i just cant get it right, i know the titles of all the forms, queries and reports are all correct but i am missing something still and cannot figure it out.
Me.Filter = "qryVisa list.[Country] Like " + Chr(34) + [Forms]![frmPassports and Visas]![Combo24].[Value] + Chr(34)
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Aug 9, 2010
I have a strange problem with creating an instance of a form which I want to use as a custom message box.
The idea is that when the user clicks the button to perform a database search, an instance of this form is loaded. The background image of the form never displays but the text on the form does - but it all works fine when I remove the call to the database.
I also tried putting a "proper" VB message box just before the database call and when I block it this way it seems to allow the image to draw on the form.I also tried using a timer delay before the database call - just a couple of seconds to see if that would allow it time to draw the image.
[Code]...
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Jul 29, 2011
I am using following code to get data from database and load to picture box
Dim vrPicFromDB = IO.File.ReadAllBytes(DsPic.tblPicTest.Item("Picture"))
Dim ms As New MemoryStream(vrPicFromDB)
PictureBox1.Image = Image.FromStream(ms)
It gives error on DsPic.tblPicTest.Item("Picture")) portion of the statement.
I also tried
CByte(DsPic.tblPicTest.Item("Picture")))
but it gives the same error.
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Jul 18, 2010
I am doing a small MS Access database based program, but I got one problem. Instead of loading the the rows like this (each nr is the count of the row):
"1,2,3,4,5,6,7,8,9,10", it loads it like this: 7,8,9,10,1,2,3,4,5,6
Here is my code for where it loads the data:
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source =" & Application.StartupPath & "\Filmer.mdb"
con.Open()
sql = "SELECT*FROM Film"
[Code] .....
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Feb 8, 2009
I want to load images into a picturebox, save them into a database and display them again in the picturebox. This is the code I'm actually having problem with:
Private Connection As String = _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:UsersclientDocumentsVisual Studio 2008ProjectsSavingsLoansCalc.mdb"
rivate Sub UploadButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles UploadButton.Click
[Code] .....
I'm getting this error message:
"Type 'Connection' is not declared"
On this line:
oConn = New OleDb.OleDbConnection( _
New Connection().getConnectionString)
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Jun 22, 2010
I'm having a problem with loading my MS Access Database. I can get it to load but it won't load in a row. My friend told me to try this but it puts all the information in a column instead of putting all the information spread out accross the row.
Here's my code:
Dim lb_Connection As New OleDb.OleDbConnection
lb_Connection.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA SOURCE = pass_database.mdb"
Dim lb_SelectCommand As New OleDb.OleDbCommand
[Code] .....
Also I'll attach an image of what the program does when I load it.
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Jun 11, 2012
I just want my UI become user friendly with changing mouse cursor while loading data from the database,because while it is loading a plenty of data it paused.
"How to change cursor while loading data from the database and set it to default after"
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Feb 17, 2009
I'm writing a program in VB.Net and loading the info into a SQL database. Debugging it works fine on my machine that I am programming it on, it connects to the database and runs through all the info perfectly. However trying to get it to run on another machine it will not connect to the database. I realize the reason for this is the connection string, it's looking specifically at the file directory for the database. How do I change this so that it will function on any machine. The program is only intended to run on one machine at a time and not over the internet.
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Jan 2, 2011
i am having trouble loading data into listview from access database
Try
Dim iForLoop As Integer
Dim ds As DataSet
[Code].....
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Sep 14, 2011
I was writing a program that would save the contents of a listbox to a database and wanted to reload the users' choices when the opened up that particular row again. My first thought was to do it with two for loops, just as I used to do in VB6, but I thought there must be a better way to do it. And there was. Sort of. It basically involves using the SelectedObjectCollection class.For this demo, you'll need a listbox called Listbox1. Set selection mode to something other than "One" or else it won't work as expected
Dim items(0 To 3) As String
items(0) = "One"
items(1) = "Two"
[code]......
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Jul 9, 2010
column name = CustomerName
SQL server database name = SQLDEV6.
I have been given a task to create a application in vb that is supose to load data from a table named tblCustomers from a DataBase.
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Jul 13, 2010
I am trying to load CustomerName and PrintStreamACNO from tblCustomers to my dropdownlist. I am not getting the correct syntax on the binding and displaying.
Imports System
Imports System.IO
Imports System.Reflection
Imports PSXSTL.Data
Imports PSXSTL.Data.DataAccess
[Code]...
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Apr 25, 2012
I have 1 exe and 1 dll. The dll (ClassLibrary1) file is located in the root of a website. In the dll I have a UserControl that populates with data its controls, from a database that is on a website too. The end user gets the exe file. This exe loads the dll and displays the UserControl1 on the form. This is how i load the control from inside the dll (located on the web site), on my form (exe file).
Private _dll As String = "http://www.site.com/ClassLibrary1.dll"
Private _class As String = "ClassLibrary1.UserControl1"
Private WithEvents cont As UserControl
[code]....
The error is "Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed."Note that if i dont load the usercontrol from the web and instead have it locally, there is no problem. The data are fetched from the database (db is on the web) with no problem.The problem seems to be that the loaded assembly from the web (the usercontrol1 inside the dll) has no permission to access anything. I am not trying to access stuff from the user's pc (like file IO), but access a database located on a web server.
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