Unable To Add Data In Listbox Through THreading
Jun 9, 2011I am unable to add data in my listbox its showing in msgbox but did not add in listbox i try using richtextbox but again same prob.[code]...
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Cross-Threading And Listbox?
Dec 15, 2011I've problem with my application. I have one class frmMain, where I have one Listbox. I'm developing a separate class that lunches a couple of threads. They do some work, and in the end I want to show the data in the frmMain listbox. I'm using the following code:
One sub that handles the requests to the Listbox. I declare it in Module
Module Functions
Public Sub ChangeText(ByVal ctrl As ListBox, ByVal str As String)
Try
If ctrl.InvokeRequired Then
[Code]...
Unable To Add Items Into A Listbox?
Oct 24, 2009So what I'm looking into doing is be able to add items into a listbox (which is easy), and when the user selects an item, depending on the item, it'll update labels which are on the same form as the listbox(not sure how to do), and then the user can "use" the item they've selected, and it's removed from the listbox, UNLESS there are multiple of them.An analogy to make this easier to visualize would be this:
There are two forms, frmMain and frmInventory (where the list box and labels are located).In frmMain, the user gains a potion (in this case, let's say three potions, kill two birds with one stone).
[Code]...
.net - Unable To Get The Contents Of My Folder On To The Listbox?
Jun 3, 2011I am current creating a file deleter in VB.net, although for some reason I am unable to get the contents of my folder on to the listbox, my code is as follows:
Public Class Form1
Dim dir = "C:UsersLimitedDesktop"
Private Sub listbox()[code].....
Unable To Create Visual Basic Listbox?
Mar 14, 2009How to display zeros after decimal place in numbers in Listbox?
View 3 RepliesMulti-Threading - Collect Data Simultaneously From 4-6 Sites At A Time?
May 4, 2011I have just written an app in VB 2010 with .NET 4.0 that contacts our field loggers to collect data via modem or IP. Originally it was written without threading, but now the requirements have changed and I need to collect data simultaneously from 4-6 sites at a time. I have never used threading, TPL, etc. Can anybody tell me where to begin so that I can concurrently run multiple collections?
View 6 RepliesVS 2008 Unable To Populate Listbox From Access Database?
Aug 19, 2010I have an accdb named base.accdb in the root folder of the program. Basically I have several tables in my database and I need to show their values in listboxes (essentially allowing menus to be edited by adding/removing items in the table)I can't figure out how to connect the database (according to my friends/classmates), and i can't figure out how to pull the information from the table.
Ultimately, it would be nice if someone could tell me how I can pull out the information into maybe an array? so that if i add 3 items into the table, then it will create 3 variables in the program and put the values from the table into those variables.
How To Select An Item In One Listbox And Then Display The Data Of Another Listbox With The Same Indexed Position
Aug 7, 2010Is it possible to select an item in one listbox and then display the data of another listbox with the same indexed position? I am planning a project and this is something I would like to attempt but I haven't figured out how to do it.[code..]
I tried doing the above code but instead of displaying the listbox text the message box just returned false.
Listbox.SelectedItem - Populate A Listbox With Data In The Code?
Apr 12, 2012I have a listbox and i populate it with data in my code like this on the page load....
[code]...
So say one item in the list is displayed Ted Jones (123) and its valuefield should be 123. Im just not understanding what i am doing wrong here.
Moving Data From Databound Listbox To Other Listbox?
Mar 2, 2012I've pretty much just started in playing with Visual Basic Studio 2010 and have been using this site for lots of answers so thought I'd join up and harass more directlyI've been trying to move items between two lists, one is databound to a bindingsource, the other isn't. I found out that you can't really move items from databound lists, but you can remove from the datasource instead. This works fine until I want to move the item back - it fills a blank line with seemingly no data.
View 6 RepliesUnable To Add New Data Source?
Jun 6, 2009when I tried to add a new data source using the wizard. But after connection has been tested succesfully ,I get this error message:could not load type 'microsoft.visualstudio.data design.sync designer.sync facade.sync manager from assembly 'Microsoft.VisualStudio.DataDesign.SyncDesigner.DslPackage,
View 2 RepliesUnable To Retrieve Data?
Mar 11, 2010this is my coding when i run this coding for display "Procedure or Function 'sp_developer_display' expects parameter '@developerid', which was not supplied."
this error will display
my sp in sql express is
ALTER PROCEDURE dbo.sp_developer_display
[code].....
Unable To Save Data?
Jan 20, 2011find items, they get added to your inventory. But the problem is is that what you have say like 3 items in your inventory, and you close the application, all the items will go away because there's no way to save. So how would I make like the program to where it saves like a .DLL file (preferably .DLL not .TXT so users cant edit easy)? Is there a way to do this like maybe when they get an item, it
View 8 RepliesData Bound To ListBox - Display Two Data Items As A Single Item?
May 7, 2012I have an Address Book project with a listbox. The listbox is bound to the database via the little arrow pop-up box in the corner of the listbox. I have the DisplayMember set to FirstName, and obviously only display the First Name of the contact in the ListBox. Is there an easy way to change it so that it displays the First and Last names? I can't change the binding because I need it to get the ID of the record selected.Here's the basis of my code...
Private Sub MainForm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'CompanyDataSet.Contacts' table. You can move,
[code].....
Listbox In Form That Gets Its Values From A Data Table By Data Binding
Jul 31, 2010I have a listbox in my form that gets its values from a data table by data binding. My question is, when the data (row) is loaded it also selects the first line automatically. I do not want this because I want the listbox to select an item only when the user clicks on it. Otherwise, the iteme should ony be listed. Is there a way to manage this?
View 2 RepliesDB/Reporting :: Unable To Add Data Source?
Sep 3, 2008When trying to create a new data source to a sql database (database up and running with no problems) I get the following error message when testing the database connection
Quote:
Unable to open the physical file "". Operating system error 32: "32(The process cannot access the file because it is being used by another process.)".
IDE :: Unable To 2008 Data Access?
Jul 6, 2011tell what 'visual' designer was used when developing an existing a VB.net 2008 desktop application? What do I click on to tell what 'visual' designer was used? Also once I know what visual designer was used, can you point me to a url to tell me how to use that visual designer? need to change some of the tables behind an existing desktop application. Basically some of the production tables will be changing. The users want to keep the existing desktop (gui) interface since they like it alot.
View 1 RepliesLightswitch Unable To Load Data?
Dec 22, 2011I have a Lightswitch application that is running fine, connects to the database and shows the data just fine. I am trying to write another one using the same database but I get the error "Unable to load data". I can't find anything I've done differently with this application. I can connect to the database in the development window and see the data by using the View/Server Explorer and show table data.
View 3 RepliesUnable To Add New Rows Of Data To A Database?
Nov 7, 2010check the VB behind code for any syntax errors.
Unable to add new rows of data to a database using the DataGrid control.
Compilation Error message is located at [URL] View snap shot images of each line error at [URL]
The VB code behind reads (revision 1.3):
</script>
<body style="font: 10pt verdana">
<form runat="server">
[Code].....
Unable To Display Data From Database?
Oct 23, 2011why i am unable to display datas from database.
If mConnection Is Nothing Then mConnection = New Odbc.OdbcConnection
' check if the connection is already open
If mConnection.State = ConnectionState.Open Then mConnection.Close()
[Code].....
Unable To Insert Data Into Database?
Feb 24, 2011I am using SQLite.When I try to insert data into the tables I get the following:Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.I am using ADO.NET 2.0 Provider for SQLite?
View 1 RepliesUnable To Insert Data Into Sql Database
May 13, 2011I'm sure that I'm missing something really basic here, but I'm just not seeing it. I have the following
Public Sub InsertRow()
Dim employeenumber As String = employeeListBox.SelectedValue
Dim headsetnumber As String = headsetnumberText.Text
[code]....
and when I put a break point on the command.ExecuteNonQuery line, and then step through that, I'm never displayed the thankyouLabel.Text nor is my data being inserted into the database.
Unable To Open Data Source?
Dec 21, 2009I have installed all of the patches and Hotfixes that I can find and truth be told, this is so enigmic that i dont know where to go to.I have been working on a project for a year and just recently I went to add a database (data source) and the Tab was gone. I thought I did something wrond so i went to Data -> Data Source and nothing happens. whats funny is that I cannot do what I want and add the datasource.
I also have VS 2005 installed (which I am forced to use) and here I have no problem.
Can anyone or does anyone have a simular problem and a resolution??I really would love to use all that is available in VS08 and not having to use a much older version...
Unable To Retain Data In DataRepeater?
Nov 24, 2009I am manully adding data to DataRepeater, but once scrolling up and down, the data is vanished. I have only a text box in the item template.
DataRepeater1.AddNew()
DataRepeater1.CurrentItem.Controls("txt1").text="yehaa"
Unable To Save Data In Database?
Mar 13, 2012I need a simple program which add,edit,save,delete data from database in vb.net. I have tried dataset or sqlcommandbuilder but both are not working. look at my code I have used with sqlcommandbuilder, it is not saving anything in database. provide simplest method to save data in database from dataset or direct from textbox. In this vb.net is not showing any error but not saving
'set up a connection string'
Dim connectionstring As String
connectionstring = "Data Source=|DataDirectory|inventorymanage.sdf;Password='XXX'"
Dim sqlquery As String = "SELECT * FROM ledger"
[Code].....
Unable To Save Data Into Database?
Apr 11, 2010I created a database in access 2007, linked it to my project in visual studio 2008 (vb). When I enter some data using the UI, it does not save it in the database, and it's gone as soon as I run the program again. I dragged the textboxes from the datasource panel, onto the UI..
this is the code that was automatically generated by vs for the save button:
Private Sub StaffBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StaffBindingNavigatorSaveItem.Click
Me.Validate()
Me.StaffBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GartisDataSet)
End Sub
Unable To Transfer Data From One Form To Another
Mar 11, 2010I have two forms which are being displayed from the MDI Parent form. In the following code I would like to send data from form 1 to form 2.
DsgnForm.InsertOE = txtOrderEntry.Text
DsgnForm.InsertFN = txtFirstName.Text
DsgnForm.InsertLN = txtLastName.Text
DsgnForm.InsertAD = TxtAddress.Text
My problem is when the second form is opened the variables are empty.How can I send data to the second form.
Listbox Data Extract After Data Entry & Sort
Sep 26, 2011I have an application that receives data input from an automated set of devices. This data stream I have managed to capture & get it into a list box which I can sort based on the Device ID & the time that the response was received.There is a set time window for the devices to transmit their data into the application and during this each device is not limited to the number of responses it can send (ie :- Device 1 can send in 2 responses where Device 3 can send in 40 responses, etc).All of the responses are captured, listed & sorted within the listbox (this bit is working ).I now need to extract the last (ie:- latest) entry in the listbox for each Device ID & this is where I am stuck. I can retrieve the last item in the list but cant seem to extract the last item for each Device ID.[code]
View 2 RepliesDatabase - Unable To Fill OleDbDataAdapter With Data
Mar 12, 2011I am unable to fill data in the OleDbDataAdapter I get an OleDbException with the following message Syntax error in FROM clause.at this line adapter.Fill(dataset, "User")
Here is the code
Imports System.Data.OleDb
Public Class Form1
Public connection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:MyDatabase.mdb;Persist Security Info=False")
[code]....
and also I have tried
Dim adapter As New OleDbDataAdapter
adapter.SelectCommand = New OleDbCommand("select * from user;", connection)
Dim dataset As New DataSet
adapter.Fill(dataset)
But I get the same exception Syntax error in FROM clause
IDE :: Unable To Update Data Into Database In Vb 2008?
Aug 16, 2009i m unable to update data into my database in vb 2008. the changes are reflected in the dataset but they are not reflected in database. i have set the datasource's copy to output property to copy if new but it is still not working.
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