i am new with multithreading in vbnet. i got this error.Cross-thread operation not valid: Control 'lvSample' accessed from a thread other than thethread it was created on.this is my code.
Private Sub xFormLoad(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim t As Threading.Thread
[code].....
I am doing this within a thread:For Each item As ListViewItem In lvUsers.Items and I am getting: Cross-thread operation not valid: Control 'lvUsers' accessed from a thread other than the thread it was created on.I have been able to adjust a control in a way using something like:
Public Delegate Sub ListAddNameInvoker(ByVal text As String)
Public Sub ListAddName(ByVal text As String)
If lvUsers.InvokeRequired Then
[code]....
But how do I get data from a control and pass it to another thread?
I want to populate a listview and leave selected records that are true
I have a DB record which is ID int, desc varchar, selected boolean.
I have tried the code below
LVProducts is a Listview and DS is a dataset
CODE:
When you use the feature "generate database from model" how do you put some data into a table?for example i want a tabel with all country after the database is created. Is there a script / shortcut to do this?
View 3 RepliesI have the code below and when I try to populate the listview it populates all of the listview items but only the first subitem. No clue what I've got wrong.[code...]
View 2 RepliesHere's my code and It's now working. I put that in "txtSearch.text"
If lvList.View = View.Details AndAlso lvList.Items.Count > 0 Then
Dim lvItem As ListViewItem = lvList.FindItemWithText(txtSearch.Text, True, 0)
[code]....
I'm stuck, can someone teach me on how to populate my listview using database.
View 2 RepliesI'm programming in VB, using Visual Studio 2008.This is a Windows Forms program.GOAL: I want to populate a multi column ListView1 with the <Name>, <Calories>, and <Fat> of each <Food> when I click Button1.
Objects I'm using:
ListView1
Button1
Profile.xml (not technically an "Object," I know ...)
[Code]...
Is it possible to populate a listview with a dataset? I have a function that returns a dataset. Why im asking this is because my SQL is quite complicated and i can't convert it to a SQLDataSource..
[Code]...
i've 3 listboxes...
- listbox1 (A, B, C)
- listbox2 (1/1/2000, 1/1/2001, 1/1/2002)
- listbox3 (1,1,1)
I want to populate a listview with 3 columns.
- column1 with items of listbox1...
- column2 with items of listbox2...
- column 3 with items of listbox3...
I am trying to populate a row into a listview control and only the first items shows up (the ProductID). the product name, cost, and quantity don't show up.
I guess the control's properties must be set for this. I went and added 4 columns appropriately named, but those column headings don't appear either.
My
'* Add new row to the Order details grid if the currently selected product
'* in the products grid is not already in the Order Details list view
If Not bItemFound Then
[Code]....
it's a search listview and i want to retrieve the data all i want is to populate a data in listview per each row
here's my sample code
Dim objDataReader As OleDbDataReader
objDataReader = objCommand.ExecuteReader
If objDataReader.HasRows = 0 Then
[Code]......
cedure that populates a ListView, but it does a lot of work and it takes too much time to display all it's items (about 100-200 items). I want to use a thread to display the items as it's extracting data (real-time).I posted a question earlier here, but using a ListView it's not working for me...
Imports System.Threading
Imports System.ComponentModel
Public Class Form1
[code].....
I have some trouble populating ListView with XML data. Writing data in XML isn't a problem. The following figure is an example XML data.[code]...
View 6 RepliesI need to create and populate a ListView with 3 strings that come from another function. I also want to be able to select multiple pieces of the data to change their values during runtime (is that possible with ListView?).
I've looked all over online for info on this, but I can't seem to find any.
I've seen somethings on GridView as well. Would that be better for this application?
I have a database in ms access. I am trying to use a listview to populate this database. I have comboboxes and textboxes that populate the listview. I have tried to just make sure that my database will populate with the combo boxes before I try to code it to populate from the listview. I am running into an error while trying to populate this database. The error I am receiving is the following,
Syntax error in INSERT INTO statement.
The error is occurring in the da.update(ds, "TrapDatabase") line.
Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim con As New OleDb.OleDbConnection
Dim dbprovider As String
Dim dbsource As String
[Code] .....
I am trying to figure out how to dynamically populate a listview with data from a file, except I only want specific lines and columns from that file. I have code right now that works to populate the listview from the file, but it writes the whole file and I only want specific lines and columns. Here is the code I currently have to populate the listview when the form loads:
[code]...
I want to populate a listview with items from datagrid view. I've been searching for solutions but it seems that all the scenarios I found were about populating listview with items from tables in database, not from another listview or datagrid view.
I'm trying this code:
For count As Integer = 0 To (DataGridView1.Rows.Count() - 1)
Dim row As DataRow = DataGridView1.Rows(count)
Dim item As ListViewItem = New ListViewItem(row(fieldfirstcol).ToString())
item.SubItems.Add(row(fieldsecondcol.ToString()))
ListView1.Items.Add(item)
But it doesn't work; it says DataGridViewRow cannot be converted to DataRow.
Let's say I have 50 cars and I created 6 attributes for each of the 50 cars (therefore 300 total variables and values for those 300 variables). These attributes are created and valued based upon the following structure:
Car1Name = "Dark Red Car"
Car1Color = "Dark Red"
Car1DoorCount = 4
Car1Cost = 10000
Car1Appeal = 10
Car1BoughtStatus = False
Car2Name = "Bright Red Car"
Car2Color = "Bright Red"
Car2DoorCount = 4
Car2Cost = 11000
Car2Appeal = 8
Car2BoughtStatus = True
and 48 others of similar structure/syntax
How do I take a a module with these variables and values and populate them into a listview within a form such as Form1 and ListView1 without continuously going into listview's UI and manually entering the data? The goal is to show the USER a list of 50 cars, their color, door count, cost, appeal, and purchase status.
I would like to populate a listview with the last two elements of an xml file. In the xml file there are the news,this is an XML element:
<item>
<title>Scientists describe 'secret of life'</title>
<link>javascript:void(0)</link>
[Code].....
currently i have created a note pad which contain names
For Example : ( inside the note pad ) Sam1
Candy1
John1
But it not showing up in my listview1 box , it seem to go straight into the Error Msg ( File not found )
Private datCallDefaultResult As StreamReader
Private Sub frmTesting_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
Im trying to populate my Listview and im getting an DBNULL value error. Ive tried the following code but it doesnt work.
Me.SpMainSearchTableAdapter.Fill(Me.CapitalVisasCRMDataSet.spMainSearch, Me.tbxSearch.Text)
Me.lsvSearchResults.Items.Clear()
[Code].....
I have a local MySQL server which has a database. Now, I want to populate a listview with all entries (Rows) in that database. [code]...
View 4 RepliesHow to populate *simple* ListView with *simple* XML data? VS 2008. I'm programming in VB, using Visual Studio 2008.
View 6 Replieshow can i populate listview from database? If the user search for a particular column (ex.Employee) then the output will be on the listview.
View 6 RepliesI am using these codes to populate a Combo o a Listview. What i want is to populate de List or a Combo depending a selected value.
cn = New SqlConnection(stringdeconexion)
cn.Open()
Dim sql As String
[Code].....
I need to know how to populate a listview with all of the images from my.settings, and I need it to show the image in the listview. How would I do this? I've never used listview because I never cared to learn until now.
View 2 RepliesHow do i populate datatable with listview. . . .i have tried this code but it doesnt give the items that contained in listview to datatable. .
dt.Rows.Add(ListView1.Items("Quantity"), ListView1.Items("Description"), ListView1.Items("Price"), ListView1.Items("Total"))
I have a procedure that populates a ListView, but it does a lot of work and it takes too much time to display all it's items (about 100-200 items). I want to use a thread to display the items as it's extracting data (real-time).
[Code]...
I've got 1 form that has the user enter 7 fields of data.When they click my "Save" button those values are stored in a .DAT file.On that first form there is a button that brings up a second form with a listview control.I have all the headers set up but can't figure out how to populate the listview control with the contents of the .DAT file.A friend of mine told me I may need a Do while loop but this is my first time doing this and I am so lost. I don't even know where that loop would go and whether or not I need extra variable for it.
View 6 Replies
