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When I run my program, it fills up the listbox properly, but when I try getting the SelectedValue, it comes back empty. I tested it by having a msgbox pop up with just the SelectedValue. Can someone tell me why the value wouldn't work? Public Class frmCourseList Public strStudents As...

This is my first time trying to serialize something. I'm getting an error that says: Type 'System.Windows.Forms.Form' in Assembly 'System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable. The class is marked serializable, so I'm...

Let's say I ask the user for a number between 1 and 10, then they click a button. How would I then create that same number of listboxes to appear on a form? I know I could create them and make them visible after the number is entered, but I'm pretty sure that will create a ton of unnecessary...

I'm trying to resize some columns on a datagrid, but keep getting an error. Here's the code I'm trying to use... dim dgColumnStyle as DataGridColumnStyle dgColumnStyle = dgBooks.TableStyles(0).GridColumnStyles("Title") 'Error on this line dgColumnStyle.Width = 200 I get an...

I am trying to do a little practicing. The following code was supplied from a book, but it doesn't work for me. I always get an error saying "login failed for GATEWAY/owner". I'm guessing it is ignoring the login info on the OdbcConnection. Imports System.Data.SqlClient Imports...

I am attaching a school project I am working on. The problem I'm having is when I add an item to the cart, it always doubles the quantity. I have figured out that the problem is that the program is looping, causing it to do several steps twice. I cannot figure out why it is looping. Obviously...

I have a datatable that keeps a running cost total of all items in the table. I'm trying to make it so I can also keep track of each individual line for future purposes. When I run it as shown below, I get an error that says "Object reference not set to an instance of an object." The error...

I have a webform that contains a shopping cart. A datagrid is created on the fly as the user selects items. Once the user clicks a "complete" button, the items they selected should be dumped into a Access database. I've had projects that pulled data into a table from a database, but never...

I have a webpage I made that contains a datagrid. I added the Edit & Delete buttons automatically through the properties of the datagrid. Anytime I make a data change and click the automatically updated "update" link, I get the following error: Updating is not supported by data source...

This line gives me an error on the ToChar in VB2005, saying ToChar is not declared: Dim chrDelimiter() As Char = {ToChar(",")}

I put some .txt files in the App_Data folder of my ASP.Net solution. How can I direct the stream reader to look for the files in this folder (or even the bin if necessary). I don't want to have to use an OpenFileDialog.

I have a school assignment that requires me to create a class library. The form for this solution has a text box that you can type anything you wish in. You can then push a button and have four different labels show how many characters, words, sentences, and paragraphs the text box contains...

If all I have is a .exe file from a program I know is written in VB.net, is there a way I can view the code?

3 different people have been working on a VB solution. What is the easiest way to combine our 3 solutions into one? We need to combine all our forms, crystal reports, etc... I tried just cutting and pasting the forms into the solution folders, but the don't come up on the solution explorer.

I'm trying to figure out a way to find a row record in a dataset. There is a field in the table called "ID". I want to be able to give it a number and have it display the info from that row. Here's what I've been trying... Me.BindingContext(DsResults1, "tbl_Results").Position = 0 Do...

I am taking a VB.Net class in school right now (college level). We are working on reading text files into an application. I am stuck on something and for the life of me can't figure out how to proceed. I know this should not be difficult... I'm obviously making it too hard. Following is the...