VS 2008 Working With Datatables Created In Code

Jan 31, 2010

I'm working on making a game using VB, and part of the game involves being able to cast magic. What I did was put all the magic spells into a table in a database with the various properties I'll need at one point or another.The problem is that I need to only be able to select from a list of certain spells (Namely those your character is strong enough to be able to cast), and have it display the cost of the spell in a text box. My way of getting the right spells was as follows..first mak the structure of the table: [code] how can I use that usableSpells table I made as though it were in a database (IE making a textbox have something like "usableSpells.Spell_Cost" and making it display the relevant cost)? Trying to do it directly gives me "'Spell_Cost' is not a member of 'System.Data.DataTable'.,

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VS 2008 Replicate This Code (LINQ, Datatables And N-tier)?

Apr 4, 2012

I am referencing a project so I can create a messaging system on my website. [URL] how I would replicate this function in my dal and bll so that I can get the same output. In the example they use a datacontext. I mostly return datatables in frim my DAL.

public List<MessageWithRecipient> GetMessagesByAccountID(Int32 AccountID, Int32 PageNumber, MessageFolders Folder)
{
List<MessageWithRecipient> result = new List<MessageWithRecipient>();
using(FisharooDataContext dc = conn.GetContext())

[code]....

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Datatables Left Join Linq - Joining 2 Datatables And Have The Joined Datatable As Result

Jun 1, 2012

I'm having a hard time joining 2 datatables and have the joined datatable as result. First datatable (labels) holds data including a printerid. Second datatable (printers) holds printer references (id > unc). I would like to have as endresult (joined) a datatable with all data from the first datatable with the field (unc) of the second datatable. [Code]

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VS 2008 Get Value From Textboxes Created In Code

May 10, 2009

I'm making a program where at the click of a button, a textbox is added to the form.

Basically, right now my code looks like this:
----------------
(Public)
Dim i As Integer = 0
Dim s As String = ""

[Code]...

Now when the user clicks a different button, I want it to get the value of the textboxes that were created in the code.

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VS 2008 : Accessing Objects Created In Code?

Oct 31, 2010

I am trying to access objects created at run time.The following code works IF Options Strict is off. If it is on it indicates "Option Strict On disallows implicit conversions from 'System.Windows.Forms.Control' to 'System.Windows.Forms.TextBox'."

Option Strict Off
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim txt As TextBox = Me.Controls("T3")

[code]....

I am having trouble formulating the type conversion.A Second problem I am having occurs when I create a groupbox at runtime and then add the textboxes to the groupbox. I am having trouble drilling down to gain access to the textboxes inside the groupbox.

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VS 2008 Change Event Of Button Created Through Code

Jan 30, 2010

I have this code to create a new button

Dim NewButton As New Button
frmDownload.Controls.Add(NewButton )

This works. But I want to change what happens upon clicking NewButton. It should start an application. I tried NewButton.Click but that event doesn't exist.

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Working With Data In DataTables - Insert Into A New DataTable (dt2) Only Distinct "Type_And_ Model"?

Jun 22, 2011

I have a DataTable "dt1" that has thousands of rows.

Columns are:
- Type_And_Model
- Val_1
- Val_2
- Val_3
- Val_4

There are only about 30 different "Type_And_Model"-types.How can I insert into a new DataTable (dt2) only distinct "Type_And_ Model" types with the sum of their specific values and total appearance number?

dt1 - DataTable with thousands of rows

Type1 2 2 5 5
Type1 4 2 7 5
Type2 2 2 5 8
Type1 2 2 9 5
Type3 3 2 5 5
Type1 6 2 5 7
Type3 2 7 5 9
Type1 8 2 9 5
.....
INTO =>

dt2 -DataTable with disinct types and their sum values + appearance numbers.

Type1 22 10 35 27 5
Type2 2 2 5 8 1
Type3 5 9 10 14 2

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VS 2008 Code Not Working?

Aug 17, 2008

Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs)
If WebBrowser1.DocumentText.IndexOf("FAILED LOGIN") > -1 Then

[code]....

Now the number 40 shows up in the web broswer so why isnt the ELSE showing the message box saying Login OK and the others?

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VS 2008 Hangman Code Not Working?

May 22, 2011

my Hangman Codes aren't working and i'm stuck at the part where it searches the word to see if the letter/word is in the word to guess and then i would like some pointers on how to go about making this D**n thing work.Here's the code i got so far.'I Know that i have some things in here twice and in different ways but that's because one didn't work so i tried another and that didn't work either i had them annotated out for debugging'

Public Class Form1
Dim strLetterGuessed As String = ""
Dim strWordGuessed As String = ""

[code]....

View the attachment to see what the form looks like. 'The red stuff was added after the screen shot using Paint'

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VS 2008 Disabling Start Menu - Code Not Working?

Oct 10, 2011

So I need to disable to start menu and have found a code on a website but it doesn't seem to work. Heres the

Dim TFlag As Boolean
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (byval hWnd1 as Long, byval hWnd2 as Long, byval lpsz1 asstring, byval lpsz2 asstring as Long
Private Declare Function EnableWindow Lib "user32" (ByVal hwnd As Long, ByVal fEnable As Long) As Long

[code]....

Edit: I'm creating a program for places like schools or library where the password for all users are the same. I already made the program go to full screen and always on top and have disabled the user from using taskbar but I can't stop the start menu from appearing.

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VS 2010 Created Application Not Working

Oct 16, 2010

I created a windows application in vb.net in visual studio 2010.The application is running in my pc but when i am trying to execute this application in another pc it is not working giving errors in event viewer..Faulting application puttist.exe, version 1.0.0.0, faulting module kernel32.dll, version 5.1.2600.5512, fault address 0x00012aeb.[code]

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Exception Being Thrown In Designer-created Code Instead Of User Code

Sep 10, 2010

In my project, I have a local dataset (XSD) that I am using as local-temporary tables. I am getting a System.InvalidCastException when trying to access the field in one the tables. I believe this is because I my code is (incorrectly) not setting a field's value in a row before trying to access it.My problem is that the exception is breaking in the designer file and not in my code. As a result, I'm having difficulting determining which line of my code reading the field value before it has been set. Is there any way to configure Visual Studio to break in my code instead of in the designer created file?

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RadioButtonList Results Not Working When Dynamically Created

Feb 24, 2011

I have 20 radiobuttonlists which are dynamically created - then declared when a form is submitted. I also have some code which totals the number of answered questions and the total value of the answered questions. - this code used to work when the radiobuttonlists were hard coded into the page, but it now does not. - I am writing the number of questions answered and the total value of all answers to the page but they come back as 0. Why this might not work now that the radiobuttonlists are dynamically created.?

Code behind:
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
For i As Integer = 1 To 20
Dim TableRow As New TableRow()
Dim TableRowCell_1 As New TableCell()
TableRow.Cells.Add(TableRowCell_1)
[Code] .....

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User Created Control Not Working In Form?

Dec 30, 2010

I created a user control with a label and 2 combo boxes, and a public property called ControlDataSource that accepts a dataset - which it populates the combo boxes with. I added the reference to the VB project I want to use it on and to the toolbox. I was able to draw it on the form with no problem and use it. However, after changing the backcolor on the control and recompiling it, it is no longer seen by the form. When I bring up the form it's used on, I get a white screen with a bunch of xml. The problem seems to be in the designer, and I get an "object reference not set to an instance of an object" error. Here is the code from the designer:

[code]...

The reference error is pointing to the line: Me.UcDx1.ControlDataSource = Nothing

Here's the wierd part. If I hover the cursor over that property, it correctly identifies it as a dataset. So it does know what it is, but it can't seem to use it.

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UnhandledExceptionEventHandler Samples From Msdn Working, In My Code Not Working?

Sep 3, 2009

I found on msdn samples and modified (add Thread.GetDomaind.UnhandledException)

<SecurityPermission(SecurityAction.Demand, Flags:=SecurityPermissionFlag.ControlAppDomain)> _
Public Sub Main()
' Add the event handler for handling UI thread exceptions to the event.[code].....

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VS 2008 Adding New Datatables Within Loop?

Jan 30, 2011

I have this fully working with a massive wall of code and validations, but I want to dynamically add new datatables to shorten my code massively.I am pulling out rows from a database for quotations which are separated into batches. So each batch bring out its quotations and a photo. As I said, I have this working find, but I am not happy with the code.

For Each arow As DataRow In dt.Rows
Dim counter As Integer = 0
While counter < batchmax

[code].....

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Forms :: Double Click Handler Not Working On Dynamically Created Picturebox

May 12, 2011

I have a Winform application where i added picturebox's to a flowlayout panel dynamically from code. I have successfully managed to add a handler for doubleclick and click events the problem i have is that when i add both together it only seems to work with the click event and not the double click. where I could bee going wrong? Iam using VS2008 .NET 3.5 my code looks a bit like this :

Public Class Class1
Dim WithEvents picturebox1 As PictureBox
Private Sub Brochure_Creator_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[Code].....

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VS 2008 Writing Class To Convert Datatables To HTML?

Mar 29, 2010

I need to create an HTML email that consists of four tables. My idea is to create four different datareader or datatables and pass them to a class that converts them to HTML. Please help me get started.I've done this before by creating a stringbuilder then appending text to it and then sending it as an html email. but, now I want to build a class so I don't have to do it the long way all the time?

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VS 2008 Export Datatables To Excel With Multiple Sheet Names?

Sep 17, 2010

I'm creating an application that will export several datatables into a single Excelspreadsheet, but on different sheet names. How can I do that?

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Forms :: TextChanged Code And Button Click Code Not Working?

Jul 2, 2009

I have made an application in VB.NET.The Button click codes are working fine. I have made a small modification in the code. I have commented the line 'Me.Close'But still my form gets closed. I think the application is executing from elsewhere.

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VS 2008 Bound - Source Data Of Drop Down Lists Be Separate Queries / Datatables?

Jun 2, 2009

I've got a couple of drop down lists for languages. I bind them to a language list that comes from a query. Then the fields are also bound to the row in the DB they relate to. I have several panels with the language drop down - each "tied" to a different table in my DB. When I call up different records on the same panel the drop downs immediately "set to the position" of that rows language in the list. But when I call up another panel - tied to another database table - I see that language in the drop down.

[Code]...

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Save VB Code Ie. The Extension Which Will Open As Macro In Excel Not Code Created With VBA In Excel?

Nov 9, 2010

I can do this using VBA, but I want to be able to create the code using a compiled VB programme, which can then be opened in Excel.

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Created My Button And Added The Code?

Feb 18, 2010

I have never programmed anything in my life -- and I'm learning VB from a tutorial which I found here:[URL]...So I've created my button and added the code. Then it says:

"Now run your first application!"I have no idea how to do that!

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Forms :: CheckBoxes Created In Code?

Sep 8, 2011

I have created all the controls in my app in vb.net code. I have checkboxes that I want to be able to check the state in code and also check or uncheck if i need to this is my code which does not work

[Code]...

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How To Delete Created Button In Code

Feb 29, 2012

I create many buttons in code like :
Public Sub GenereTextBox(ByVal rep As String)
Dim txt As New TextBox
Dim fnt As Font
fnt = Me.Font
txt.Location = New Drawing.Point(26 + NbreCacher * (68), txtOrdonnee)
[Code] .....
And I want delete some buttons create when I click on my button, but I don't how I can do, because these buttons are create in code??

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Moving A Picture Box, Created In Code?

Jan 3, 2009

I am writing a game tenetivly labeled Code Invaders. It is similar to space invaders in which a space ship shoots out lasers at the incoming enemies. My problem is the lasers exiting the space ship. I can create them except they won't move...

Public Class frmMainInvasion
Dim activationCheck As Boolean = False
Private Sub frmMainInvasion_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing

[code]....

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Adding Controls To A Code Created Form

Apr 28, 2010

What I am trying to do is create a form in code that runs while the BackGround worker is running.I created a form the normal way with a label and progress bar but I want to update the label with what is going on in the BackGround Worker.Doing it the standard way isn't updating the label on the form.So my next idea is to create a form in code which I have done, but now I can't remember how to add controls to that form at runtime.Here is the code I have so far.[code]So from here I have tried the CreateControl() and the Controls.Add() and neither one is working for me.

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Connect To A Code Created Dataset And Table?

Aug 13, 2009

I have a search page in my application where I am searching the database for the records that meet the specified conditions that the user selects. All of this works by creating the dataset, datatable, and dataadapter in the code. I then take a created bindingsource link it to the created datatable and then attach the bindingsource to my datagridview to display the results. Now what I am trying to do is to figure the Mean, Median, Mode and Standard Deviation of the results that were found above. My question is how to I run a select query on the code created table. I have the select query I want to use and when I try to use it in the code it talks about the connection. Now I have a dataset that is part of the project and I have the on just for the search page. Let me know if you need any code samples.

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Created A Listbox And Button In Application Using Code

Feb 1, 2009

I created a listbox and button in my application using vb code.When the user select an item in the listbox and click on the remove button, the item will be removed from the listbox. I know how to remove the item in the listbox, but I don't know what coding to add to activate the click event on the button.

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Refer To A Column Created In Code For A Listview?

Sep 17, 2009

how to refer to a column created in code for a listview, I need to set it's width property but don't know how to refer to it in code.

lsvOrderDetails.Columns.Clear()
lsvOrderDetails.Columns.Add("Product")

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