Im very new to programming all together, but Ive recently been messing around with Visual Basic 2008..
1. When using multiple forms, how do I make a form be the form that opens with the program (default form?)?
2. How do I assign a button to open a second form?
With what I'm trying to make, I have both forms ready, I just need form2 to be the one that is the first to open when running and I need the code for a button to open form1.
I am currently making a book shopping cart. look at the pictures to get an idea.(main is the first form "file books" is when the second printbook opens and user selects. The application has four books and calculating the subtotal of them. The user can choose to buy any ammount of books. The "Add book to Cart" button calls the module1 Module1.main1()
And this is the module1 code ( I tryed using a select case)
Module Module1
Public Sub main1()
Dim Print As Decimal
[Code].....
I have a couple of questions regarding the use of multiple forms within a single project.I'm currently using a button to load a second form so that the user can select different options and then load those options from the first form.Basically, I have a check box on form2 and I want form1 to be able to know if it is checked. I thought I could just use:
if CheckBox1.Chcked = True Then
Etc.
End If
But, when I do, I get an error saying it can't identify the object I'm referencing.Also, when I open the second box and I click my "OK" or "Cancel" button, the page reloads and then I must press it a second time for it to actually close.This is the code I'm using on my first form:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim frmDialogue As New frm2Toolest
frmDialogue.ShowDialog()
If frmDialogue.ShowDialog() = DialogResult.OK Then
[code]....
The second form that has the buttons:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
Me.DialogResult = DialogResult.OK
End Sub
[code]....
so I have a generic list in a console application. Dim Channels as New List(Of Chatroom) Chatroom is a structure. But I have multiple classes, threads, and timers looping through this list, sometimes at the same time, but it always seems to raise errors because the number of items in the list gets changed while one of the other classes/threads/timers are looping through also. Is there any way to allow only one to manipulate it at a time?
View 8 RepliesI have a form from which I am visually representing data (from access database). I have set up a user log on a separate form (allows user to make comments as they scroll through the data and see any points of interest etc). The second form is linked via a textbox in terms of a common field in this case the field name is "Datetime".
What I want to do is be able to scroll through the data and make notes on the second form and add them to another table in the database. I have managed to do all the above but obviously loose focus of the second form when i scroll through the data on the first. Is there any way of being able to interact with both forms at the same time?
I have a VB Solution with a dozen forms trying to implement invoice system.My main form (Say Form1) only has a design to create , Edit or Delete Customers.My form 2 will be opened if Create button is clicked. In my form 2, I have textboxes where user can enter Customer details and click on SAVE. My doubt is here....On clicking this SAVE button in Form 2, I want a INSERT command to happen on the MSAccess's Database table called Customer (which I have already created... this table does not have any records as of now). In my form 1, I added a MSAccess Database with a Connection String. In my Form1's code I have code like this[code]...I got this piece of code from this link [1]: vb.net - sharing mdb access connection among multiple forms/Now, I do not know what more code does this require to INSERT records from my text box into the Customer table's fields.
View 1 RepliesI'm trying to make a string inputted on a separate form's text box adjust the value of a string on another form. Is there a way to do this rather than exporting the data to a file and retrieving it on the other form?
View 7 RepliesSo, I'm trying to do things according to accepted convention as much as possible.
I have a DataTable that holds data that is read in from an XML at the launch of the program. This DT contains data about folders that are added by the user. It is primarily accessed by a single form, but another form used for Adding/Editing folder data will need to update it.
So, what is the best way to handle this: Currently the DT is created/maintained in the main form (FolderPad) that uses it. Would it be better to put the DT in a public Module for access, or allow the add/edit form to access the reference to it in FolderPad? Or is there a more accepted way to do something like this?
I have used CSV files before for a simple database of about 12,000 items - this was a simple one page form... Now I want to have the same database but with the data available to multiple forms at the same time.. eg.. Form 1 displaying persons 1,2,3,5,7 name, addy, phone etc and form 2 pulling info for persons 2,3,4,8... Is this possible with CSV files?? or even XML?... The only other thing is that I do it all in .NET 2.0....
View 3 RepliesI am trying to display(in a status strip label) the user name of a user that is currently logged in across multiple forms. The initial form is a log in screen that queries an SQL database for the user name,password,and user type. If the query returns a match,then a different form is displayed based on the user type. How do I retain the user name of the user that is currently logged and display it in the label?
BTW,it's a point of sale program.
I build my first Project composed of several forms and it�s working just fine. Id like now to redesign the project as a MDI Application. Once created the parent form, I can create child forms but thats not what I need. What I would need is convert my already designed and working forms to MDI child forms. How can that be done?
View 1 RepliesIn a label box, I want to list a couple of websites, email address along with some text. How do I go about it?
Potential uses- As a Help > About dialog box where websites, email of the author can be listed.
To make things as easy as possible for the user, and encourage visiting of the mentioned websites.
Simple text will be ignored, while standard blue color, underlined text with hand mouse-cursor will need no thinking on user's part.
I have the requirement to create an application that has multiple front ends developed using Windows Forms, WPF, ASP and Compact Framework Mobile Forms.I would like to be able to create a series of obejct representing the business logic and have this logic accessible from the various front ends available. My first thought was to use remoting as I'd like to be able to pass the business objects back and forth between client and server but the compact framework doesn't support remoting and also transferring a full framework business object to a compact framework business object doesn't seem possible.My next thought was to use web services but again the passing of business objects seems to be very hard to accomplish. Without doing this I would have to create individual web methods for each business operation.
Finally my next option is to use sockets and write the whole client/server logic within some classes and expose them to the UI/Business layer. My only problem with this is it is not scaleable should the number of clients increase dramatically whereas using remoting or web services I can host the solution via ASP.Net.Does anybody have an ideas on the best way forward for this or even have any input on how they would write an application that required a windows form, wpf, asp website and mobile device GUI all of which want to use the same business logic?
I have googled high and low to find an answer to this but I must be searching wrong.I have an application which has a listview displaying some items that are stored in a SQL Compact database. I am using a second form to add new items to this list directly into the database.When the second form closes I want to call the sub in my first form to refresh the list from the database.
How can I get it to fire the form1 sub routine on the close event of form2
i was doing a fair amount of programming many years ago, like 10 it feels like, so I'm sorely not up to date on how my newly downloaded Visual Basic Express expects me to communicate with it.I am writing a program that pulls a cell from a database after the user has gone through several forms to determine which cells they want. When I write it like that, it doesn't sound very efficient, but I've designed it this way for usability.Here's where I have a problem: Should I store the path the user takes in a string, an array, what?
Here's an example:Someone wants baseball stats and trivia. They run my program, main form pops up, they select National League button, the NL Form pops up. Now the way my program is set up right now, is there are two ListBoxes on the form, one is populated, and as the user selects a Team from ListBox1, it jumps to ListBox2. Once they've selected all the teams they want info for, they click a button Next.
What I now need the program to do is show the next form "Team: name" once for each team, and insert the name of the team on the form in the appropriate label which I'll have blank. This form will also do the Listbox thing except the first listbox will populated with Topics like HR Stats, Pitching Stats, Coach History, etc.
Launch a dialogue window from the main form, and then another dialogue window from that dialogue window. If you close the second dialogue window and call dispose the main form vanishes under any other open windows. This doesn't happen by closing a dialogue window normally, but I am attempting (rightly or wrongly) to stop memory useage creeping up by disposing of it.
So, the question is - what method can be employed to maintain the position of the windows?
I have two forms frmMain and frmNew, and one module modMain. In modMain I hold public variables which are needed for application. My question is how to open and close those two forms when needed? I ask this because if i set frmMain as startup form, then when closed, application will end, and one of those two forms will always be displayed. Also if I set frmNew as startup form, then when I close this form, application will also end. Is there a way to do this from module or something so my application won't end after closing and opening any of those two forms?
View 2 RepliesVB.NET newbie here... I have an vb.net windows application set up. It has multiple forms, about 6 in all. There's a main menu form, and then 5 other forms to collect data. The user will collect data on each form and bounce back and forth between forms. How do I get the forms to retain the data that has been entered into the text boxes and/or other controls on the forms? For example, they might fill out a few textboxes on a form, but then need to go to a different form and fill something out... and then back to the previous form. Right now, when they come back to the form, all the data previously entered in to the text boxes is gone.
View 1 RepliesI am trying to write code with multiple forms. The first screen is splash screen then is supposed to close and have a calculations screen. In the timer of the splash screen I wrote the following code
Option Explicit On
Option Strict On
Public Class uiHinsbrookSplashScreen
[code]....
This opens the second screen, but when I Hit Exit on the Second Screen The first screen is still open. What do I need to do next?
I have four list boxes, side by side. I've got a huge list of files that the program scans through and if (file insides) = (this) then; else if and etc. I know that part is working. The problem is actually the list boxes themselves. The reason I know this is:
I have four listboxes side by side, only the first one shows data, but if I delete the first one from the form, only the second will show data, if I delete first and second, the third one displays data, and if I delete the first three, the last one shows data. The problem is they wont display data at the same time. I was talking with someone else and they said I needed to change the IDs and I should see that option somewhere near the "Name" section. I use Visual Studio 2010... I don't see any IDs option to change. on how I can change this ID or maybe something I have to do to get these listboxes working?
VS 2008 express edition, OWC office spreadsheet 11 I am working from two computers, one in my campus and one in my home. I already make a short project with form and OWC spreadsheet in the userform. It works well in my campus and I want to continue in my home.After copying all directory of the project to my home computer, the project failed to load.
View 6 RepliesHow would i reference a control or form from another project. I have a solution with multiple projects (Project1 & Project2 for example) and I want a button on Form1 of Project1 to open Form1 on Project2. I know if they were part of the same project it would simply be Form1.Show() and I thought something like Project2.Form1.Show() would work but unfortunately it doesn't seem that easy.
View 15 Repliesis they a way of keeping track for multiple instances of the same form? example saving the contents of a textbox ,the positition of the form and size when using the code below to create the new instance of the form ,i would like to save the contents of multiple form2`s from form1 ,can it be done??
[Code]...
It appears that my favorite thing in the world is tackling projects that are beyond my current knowledge and abilities. I have a little project that I am working on which is a simple image viewer stocked with (upon completion) your standard Load..., Next/Previous, Zoom In/Out, Actual Size, and Full Screen capabilities. However, I am running into a few snags:
(1) I've been able to get my "Load..." button to display a file dialog box, but I cannot seem to get a working filter (with which only image file types are allowed to be selected) in working order.
(2) I have a PictureBox object (entitled PictureBox1) that displays the image selected via the file dialog box, but it loads images in their full size (1:1/100% zoomed) state without scrollbars, etc. to allow me to navigate the loaded image. I would like to have it load the image, initially, to fit within the dimensions of PictureBox1 and from there be able to zoom in/out via my "Zoom In/Out" and "Actual Size" buttons and be able to scroll if the zoom level is beyond the dimensions of PictureBox1.
(3) It dawned on me that I haven't the faintest idea how to get my "Next/Previous" buttons to allow the user (me) to navigate, in succession, the images contained in the folder in which the currently loaded image is stored. [code]
If it is deemed that this thread is inappropriately requesting help, I ask that it be locked/deleted quickly as I recognize that this is a large community with many discussions going without need of unwelcome posts.
So on Form1 I got a TreeView, and on Form2 I have a Button. What I want is when I click the Button on Form2, it adds a Treenode to the Treeview on Form1... How do I do this? Do I use inheritance or partial class or what?
View 4 Repliesi am involved in a project where i have four forms. access,oracle,sql and display resptly. the fourth form is common form for the other three forms. in the fourth form i have to write a code that opens connection to oracle database if its previous form is oracle or opens connection to sql database if its previous form is sql.
View 1 RepliesI am developing project in which i am sending emails to multiple user as follows
Dim users(20) As String
users(0) = "xxx@xxx.com"
users(1) ="xxx@xxx.com"
[Code]....
How to work with multiple combobox. I have several combobox. I it to have same itemlist and set a default value for this.I used to do:
Code:
Dim MyItemToBox(3) as System.Object
For i as integer = 0 to 3
MyItemToBox(i) = "A" & i
Next
[code].....
I trying to do a drag drop from a listview in one form to another instance of the same form (same application running twice).I have it working with single items selections, but I want to make it work with multiple selections. 289508(VS.71).aspxThis works if I drag/drop onto itself (the same form), which I don't want, but I need it to work across instances.During debugging it seems the code DragDrop code just quits at the line during the drop:Dim myItems() As ListViewItem = e.Data.GetData("System.Windows.Forms.ListViewItem()")Any ideas what is wrong or how to drag/drop multiple items in a listview between apps?
here's my code:
Private Sub ListView1_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles ListView1.DragDrop
[code]....
I'm still learning vb.net, so I'm not terribly familiar with all the terminology, otherwise I would have searched a little harder before posting. I'm working on a program where the user can add various forms to a MDI parent.I would like each of the child forms to be part of the same array, all of the child forms will be of various types.Some forms may display a textbox, some forms may contain a graph, some forms may contain an image, etc.[code]
View 7 Replies