What To Use So That The Users Can Modify Form After Creation/runtime
Nov 20, 2011
I have an assignment I need to make and I have to make an app where the user can create a map/floorplan.So basically they open up the program go to create or edit and they should get a blank or already made floor plan.After that they should be able to add new icons/components to the floorplan or change them location wise on the floor plan.I have been searching into custom user controls and a few post I found on the internet about dynamically creating buttons.The dynamically creating buttons could do if the users can modify their locations and if it could save the whole form after being altered.However I want to be pointed in the right directions and know if any of these will work before I start doing more research and going more in depth.
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Dec 30, 2011
In the past I've used this code to create a database at runtime :-
Dim Cat As New Catalog
Dim Cn As New ADODB.Connection
Dim objTable As New ADOX.Table
[code].....
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Dec 6, 2009
Is it possible? Self modifying codes based on users choices.
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May 15, 2012
Let say I have the following classes[code]...
If I wanted to say, alter the code definition of the automatic property X (at runtime, perhaps in Sub New), such that I could throw the PropertyChanged event
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Mar 29, 2011
Is there a way to modify contents of app.config file at runtime after starting application?
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Jan 9, 2009
I am creating a form in vb.net and i want its size to change the form as soon as the user inputs the desired number of items. In my form I have two combo boxes: one for number of items and the second is for the choices, then when the user choose 5 items 5 text boxes will appear and if the choice is 25 then 25 text boxes will appear. Is there any way that I can change the form based on the input and number of text boxes?
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Aug 12, 2011
I need some input refactoring an asp.net (c#) application that is basically a framework for creating dynamic forms (any forms). From a high level point of view, there is a table that has the forms, and then there is a table that has all the form fields, where it is one to many between the two. There is a validation table, where each field can have multiple types of validation, and it is a one to many from the form fields table to the validation table.
So the issue is that this application has been sold as the be-all-end-all customizable solution to all the clients. So, the idea is whatever form they want, we can build it jsut using DB configurations. The thing is, that is not always possible, because there is complex relationship between the fields, and complex relationship between the forms themselves. Also, there is only once codebase, and this is for multiple clients - all of whom host it on their own. There is very specific logic for each of the clients, and they are ALL in the same codebase, with no real separation. Sometimes it was too difficult to make it generic, so there are instances where it has hard coded logic (as in if formID = XXX then do _). You can also have nested forms, as in, one set of fields on its own within each form.
So usually, when one client requests a change, we make the change and deploy it to that client - but then another client requests a different change, and we make the change and deploy it for THAT client, but the change from the earlier client breaks it, and its a headache trying to debug, because EVERYTHING is dynamic. There is no way we can rollback the earlier change, because then the other client would be screwed.
Its not done in a real 3-tier architecture - its a web site with references to a DB class, and a class library. There is business logic in the web site itself, in the class library, and the database stored procs (Validation is done in the stored procs).
I think this is a bad model in general, because one of the things I heard one of the developers say is that anytime any client makes a change, we should deploy to everybody - but that is not realistic, if we have say 20 clients - there will need to be regression testing on EVERYTHING, since we don't know the impact...There are about 100 forms in total, and their is some similarity in them (not much). But I think the idea that a dynamic engine can solve ALL form requests was not realistic as well. Clients come up with the most weird requests. For example, they have this engine doing a regular data entry form AND a search form.
There is a lot of preserving state between pages, and it is all done using session variables, which is ok, except that it is not really tracked, and so sessions from the same user keep getting overwritten, and I think sessions should be got rid of.Should I really just rewrite the whole thing? This app is about 3 years old, and there has been lots of testing and things done, and serious business logic implemented, so I hate to get rid of all that (joel's advice). But its really a mess of a sphagetti code, and everything takes forever to do, and things break all the time because of minor changes.
I've been reading Martin Fowlers "Refactoring" and Michael Feathers "working effectively with legacy code" - and they are good, but I feel they were written for an application that was 'slightly' better architected, where it is still a 3-tiered architecture, and there is 'some' resemblance of logic..
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Jul 25, 2009
ok so heres what im trying to do. I have one form with a textbox and a button. im trying to make it so that when you type in the word "internet" a new form will be created and it will have the following components inserted onto it;
one webbrowser
one textbox
eight buttons
im not really having a problem making a new form so much as having a problem putting the tools on it, heres what i have
Dim screensaver As New Form
Dim back As New Button
Dim forward As New Button
[Code].....
vb doesnt say i have an error or anything like that, but i cant create "internet". i can create the form but cant put any of the components on it.
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Nov 20, 2009
I'm trying to build a form which generates itself as it is used. I have created a really simplistic example, loosely related to what I'm trying to do below, but which demonstrates the problem.The user types a word in the text box, clicks the Button and a new TextBox is loaded into a Panel, with the value in the original TextBox that the user has entered. The user should then be able to type something else/the same and create another text box with that in it by clicking the button, basically permitting 0,1,..,n textboxes appearing above the "txtFeeder" TextBox on the form.The problem is that everytime you click the button, it doesn't add a new control, it seems to just update the one that has already been created with the new (incremental) ID. I'm not sure if I'm doing something wrong, or if what I'm trying to do can't be done (which I find hard to believe)?Here's the .aspx...
<form id="frmMain" runat="server">
<asp:Panel ID="pnlAdded" runat="server"></asp:Panel>
<asp:TextBox ID="txtFeeder" runat="server"></asp:TextBox>[code].....
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Nov 24, 2011
I am just wondering how to force the creation of a handle of a control before the form that it is contained on is loaded... I have tried:
[Code]...
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Aug 5, 2011
am processing html forms with htmlagilitypack, but encounter some problems. take for example
<form action="" method="post">
<input name="email" type="text" />
<input name="fruit" type="hidden" value="5" />
<img src="/image.php">
</form>
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May 12, 2009
I have a problem with form instantiation. This is what I want to achieve: I want to create forms with a toolstrip attached to them right from the moment these forms are instantiated. I have several ideas:
1. making custom Form Control
2. modifying the new method for forms
I'd like to focus on idea 2. I want to know if there's a way to alter the in-built New() method, so whenever the compiler instantiates a form, somehow when the constructor(New method) of each form is invoked, the compiler adds a toolstrip to the form.
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May 2, 2012
I Use a thread to send an email. I need write text in a label to let user know when email was send in a form of budgets.' Option Strict is off Function on class form.
Public Sub ChangeLblText(ByVal msg As String) ' LblIconos.modifiers = public (In form)
lblIconos.Text = msg
End Sub
Declarated class of new thread. (Global declared.)
Public TasksPresu As New TasksClassPresu()
An Icon of Form "Presupuestos" trigger the thread
Dim Thread1 As New System.Threading.Thread(AddressOf TasksPresu.TaskEmail)
Thread1.Start()
Class Trigged thread
[code]....
When run this make an error in this line: lbliconos.text = msg Error: "Illegal operation through threads. It had access to the control "lbliconos" from a thread other than that which was created"
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May 1, 2012
I Use a thread to send an email. I need write text in a label to let user know when email was send in a form of budgets.
' Option Strict is off
Public Sub ChangeLblText(ByVal msg As String) ' LblIconos.modifiers = public (In form)
lblIconos.Text = msg
End Sub
[code]....
I tried Invoke metods, delegate functions and adress of form without work, may be i left something.
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Sep 6, 2009
I got the below code from Deborah Kurata one of the msdn moderator on her webpage. Her code is to save the form size at runtime but i would like to modify it to save the buttons which i have dragged and drop. I tried to modify the code but i tend to when i put the Dim theButton = DirectCast(sender, Button) under the form load method. It put there cannot cast object. something like that.
Public Class Form1
Dim tm As New Timer
Dim Index As Integer = 0[code].................
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May 17, 2012
Prog appends a textfile. Don't want user able to delete or modify while form open. How do I do this?? - As long as form is open user cannot modify or delete textfile. But so the file can be edited from within form
How do I do this. Here is my code so far
Public Class Form1 Dim FILE_NAME As String = "C:UsersBirthdayDocumentsinfo.txt" Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
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Feb 9, 2010
I have an asp.net web app that uses forms-based authentication, a SqlMembershipProvider (using an encrypted password format), and a SqlRoleProvider. I need to know if it's possible to administer the users (create new users, assign them to roles, etc.) from a windows application - the powers that be don't want any administrative functionality in the web app itself.Here is the membership provider definition from web.config:
<membership defaultProvider="MyProvider">
<providers>
<add name="MyProvider"
[code].....
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Dec 29, 2010
I've got a code using SQLClient that loops though all users in a Users table inside each loop i want to preform another search in the UserOrders table, thus doing a count of all orders.
I get this error
HTML
There is already an open DataReader associated with this Command which must be closed first.
Here is my code
vb.net UserLists.Items.Clear()
Dim connection As New SqlClient.SqlConnection(My.Settings.ConnectString)
Dim command As New SqlClient.SqlCommand("SELECT * FROM Users ORDER BY PersonName",
[CODE]...
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Apr 3, 2012
1.I�d like to publish a free vb.net desktop application for the users to download and use meanwhile I�d like to collect usage information ex: user ip address, user�s registration information, used features, time spent� if the user allows the report to be sent back.
2.Also , in order for the user to be able to use the application, he�ll have to register it then, everytime, before the application loads, it gets verified online that it was registered, maybe validate the registration information or a valid user name and password, no critical personal information. The target of this step is for the application to be used exclusively by the registered user and maybe on his computer only.
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Apr 4, 2012
1. I�d like to publish a free vb.net desktop application for the users to download and use meanwhile I�d like to collect usage information ex: user ip address, user�s registration information, used features, time spent� if the user allows the report to be sent back. 2. Also , in order for the user to be able to use the application, he�ll have to register it then, everytime, before the application loads, it gets verified online that it was registered, maybe validate the registration information or a valid user name and password, no critical personal information. The target of this step is for the application to be used exclusively by the registered user and maybe on his computer only. Any alternative way to achive the target is just fine.
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Oct 1, 2009
We created a vb.net desktop application in Microsoft visual studio 2005, in deployment phase we found that the application are vary slow in startup (Splash screen), we try many solution (ngen, remove unused name space, code, references) to speed the load but we could not solve it.
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Jun 7, 2011
What would be the best way to show how many users are using your Application. For instance, Having a label show how many users have used it/are using it.
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Apr 22, 2009
I need to stretch the form according by the users screen. My application has to run maximized, but other users may have different resolutions sat and they won't see the whole program or will see it smaller than their screen.
This may affect the resolution, what code would do that?
maybe something like: get resolution (x:y) and set size width and height but I would still need to stretch all the other controls within the form as well.
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Feb 19, 2009
I've got 2 levels of users, and I'd like to find a way to open a certain form for each user. I have tried something that I thought would work, but it just opens the same form for all users:
If "MenuType" = "Landscaper" Then
Dim MainPanel As frmOwnerPanel
MainPanel = New frmOwnerPanel
[code]......
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Jun 10, 2008
I cannot figure out how to get this call to work.I have searched EVERYWHERE.MSDN is no help at all and the only thing I can find is this vb6 code that doesn't work in .net.I tried to convert it over but I've had no luck.Specifically I'm trying to get the path of the "All Users" Desktop and the "All Users" Start Menu.It would rock if anyone could help me out with this one.
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Jun 5, 2009
I am trying to create a small form that will duplicate a users entry for them.On my form i have a text box and two CheckListBox controls and a button. The user should be able enter a value into the text box, and select multiple items from both CheckedListBoxes, when they click the submit button the details will be added to a DataGridView below.
This is an example,The user enters the value Audi A4 into the textbox.
The First Checked Lsit Box is called "Colour" and from the options the user checks 'Red' and 'Blue'.
The second Checked List Box is called "Number of Doors" and from the options the user checks '3' and '5'.
When the User clicks the submit button 4 rows will be added to the DataGridView with all the different combinations, as shown below:
Model Colour No# of Doors
Audi A4 Red 3
Audi A4 Red 5
Audi A4 Blue 3
Audi A4 Blue 5
I am currently using this to populate the DataGridView:
[Code]...
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Feb 27, 2012
How to Get The Maximum Characters can we writer on Form.Text that visible to the users.
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Sep 6, 2011
basically my problem is my program i made is fine on my screen, but when i port it to my mates screen some of my listboxes and buttons are not visable. because of his resolution i want to me able make my prgram adaptiable to specific screen resolutions.
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May 3, 2010
I am trying to create a secure login form which can avoid double users log in with same user id from different locations. how can I create a secure login form. I have create a basic login form as below.
Dim conn As SqlConnection
conn = New SqlConnection(Source)
Try
[Code]....
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Oct 13, 2009
I am making a login form for my A2 computing work and have got that to work but i did do some of the work and now i want to know how i can add extra users and passwords using simply textbox on another windows form [Code]
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