I have a form with a listbox. I'm trying to save the items that I add in the listbox to a file that i create when I use the save dialog. Every time I run this and try to save the file with all the listbox items, I get an error from VB that says "Procedure call or argument is not valid."[code]...
I've got a problem, I'm making a program that gives you the choice to add items to a listbox, these items are text. When the form loads, i need it to load text from a file into a listbox. For every line I need it to add that text to the listbox. My problem is when it loads, there's an extra line, but that's only after I close the form and open it again. The reason it happens when the form unloads is because the listbox items are saved on form unload. Now, I believe the problem is my code to save the items:
Dim Env As String = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) For Each item In Form1.TP1.Items Dim Save As New SaveFileDialog()
I wrote this code to save the items of a listbox to a .txt file, and I don't know if I am doing it right. Tp1 is the name of the listbox, and I have this code under a public sub in my module. Here's the
Dim CC As Integer = Form1.TP1.Items.Count Dim C As Integer For C = 0 To CC
I've been trying to figure out how to do this correctly for some time now, and I have seen no insight. I'm trying to successfully save all of the items in a listbox without saving items that are not there. What I mean by saving items that are not there is when it saves, it seems that blanks magically appear in the text file.Here is a sample of my current code to save.
I'm not completely sure if it's the loading or the saving that's causing problems, but what would happen is it would add a blank item to the listbox that I do not want.Here's a picture before the listbox is saved, look to the bottom left.Now here is what it looks like after: (notice the red oval)Does any one have any idea what could be wrong?If you want me to attach the text file, just ask.
I added a setting in my.settings, the setting is a listbox, and I know you can put controls in a listbox, but for some reason it will not let me add a toolstripmenuitem to the listbox in my settings. Is there a fix to this?
I want to retrieve the selected items in a listbox, save them to a collection, and then use that collection later. I thought that was simple enough, but when I clear the selected items in the listbox, my collections (items, indices) change. I found this out by stepping through the code.
Basically what I'm wanting to do is move items in the listbox up or down (up in this case), and still keep them selected.
I am using VB.NET (version 2008). I have two types of items populating in a listbox (checked listbox). For example: lets say one is type "A" and other is "Type B". Their names maybe same so if the user sees those items in listbox then he won;t be able to determine their type until he click on them and checks out its properties. I wanted that I add each item to listbox and colour them so that blue for example means type "A" is there and red means the other. So this way I will be able to know at a glance that how many item of what type is present. I guess it may not be possible to do that in a standard checkedlistbox. I am also using component factory's krypton controls which enhance the gui of an application. But I dunno if I can progress using that.
i want to add all items from my listbox into a database. the first item has to go into the first row of the table followed by the second item into the second row followed by the thir in that order. I have already created the connection with the database. I now want to write an insert query to insert the items into the table with the sql command in a loop but i don't know how to get each item from the listbox and add it to the insert statement. I want to assume that non of the items in the listbox has been selected.[code]
I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
I have a Listview with 5 columns. It display data taken from textbox. I want to save all these data to a database. I am using VB 2010 Express with Access database. I have tried the various codes in this forum but seem not be able to work it out. What code should i use? Also i have found many suggesting that a datagridview is a better option, how would i update the DGV with data from the textbox control, as this POS application and calculations are done for eventual printing of a receipt and saving the data to the db.
I would like to read a ValueMember of all checked items in my CheckedListBox. i have sub as below to add im my checkedListBox.[code]Then how to loop each of the checked items in the checkedlistbox so that i can store it to the database.below is the code for storing in database using sp.[code]
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"
I want to transfer multiple items selected from a listbox to an access 2007 database using a parameterized query.When I select certain items from the listbox, only first item selected gets stored in the database.Other values selected are not written to the database.My code is as follows.Is my approach towards transferring multiple values correct?Someone
I have been trying for days to work this code. I want to transfer the information from a listbox to a table in an access database. The listbox gets its information from a text file using stream reader. My code so far has produced an error at the NewRow Method. I am using VB.Net 2010
Im trying to effectively, Save a listviews items to A database (after clearing it) then load it all back in to the listbox, would this do it? becuase it just doubles what ever is in the listbox @ the time,
Dim ConnStr As String = "Provider = Microsoft.Jet.OLEDB.4.0; Data Source = " + System.Windows.Forms.Application.StartupPath + "data.mdb" Dim DT As New DataTable() Dim SQLStr As String = "DELETE * FROM [keys]"
Is that possible to save values from a listbox to mysql database? I guess yes. I have a list of values in a listbox obtained from splitting a file. The strings are like numbers but they are of type string. What I need is to get those values in the database in the integer type. How can I proceed?