Add Controls From Database On FormLoad?
Oct 12, 2009
I want my application to be able to be changed by the user. For example on my form I have the labels Blue, Red and Green but the user requires yellow and another colour which is unkown to me so they would have an ADD function which saves to the database so next time they login their colours are there as labels.
How would you pick up the name of the colour from the database? and place that into your code to create a dynamic control with the same name as the colour which is unkown?[coded]...
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Oct 20, 2008
The Title says it all Adding Multiple Checkboxes on FormLoad Depending on Amount of Items In Database. [code]
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Mar 24, 2011
I am having, and it may be related to another issue i am having, but im not sure.I have a form that all of a sudden stopped executing the formload event.i checked the initialize component method, stepped through it, and it runs fine.the formload has the handles clause on it. i put a breakpoint on formload and it does not stop on the sub header. so could it be part of this issue?::: every once in a while, the code parser breaks, and reads partial lines of code (designer generated code at that)...so an error that pops up is Error in line "clearBeforeFi" not recognized....in dataset designer code, it is reading half the line, seeing it as the whole line, and i get a thousand errors. I restart the IDE, and that is fine again.....
however, this formload thing does NOT want to go away.it shows the form, runs the initialize code, so it shows the form fine, but executes nothing.[code]...
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Mar 31, 2009
I am using VB 2008 .net3.5. I have a form with a datagridview. The datasource of the dgv is a BindingSource. The datasource of the binding source is an object and the datamember of the binding source is a List(Of T) from that object. On formload, I create a new object with new and give the list some values and Set the datasource of the binding source to the list. The dgv loads the data but I can't delete a row. The AllowUserToDeleteRows is set to true. I select a row and nothing happens. Just to be sure I went back and did the EXACT SAME PROGRAM with C# .net2.0 and of course the dgv allows me to delete a row.
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Dec 31, 2009
I'm having trouble getting a If Statement to work on a button.It will only work when on the "Form Load" section.Heres the If statement I'm trying to put on the button press event.[code]
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Jun 7, 2011
I have a project which is 98% complete. Its basically a Shop(till) interface. I have a form that has tabs the first being the main till, second shows a listview with everything in stock and the quantity of items in stock. Im stuck on one part of the program where when the form loads it checks the stock and if any of the items have a quantity less than 5 for example than it displays a message box to the user telling him/her to order new stock, but im not sure exactly how to do that.
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Mar 6, 2012
i have a issue when i load my ini to my listbox and 'this my load ini to listbox
im a As String = My.Computer.FileSystem.ReadAllText("movieextlist.ini")
Dim b As String() = a.Split(vbNewLine)
ListBox1.Items.AddRange(b)
try to scan for extentions it crashs, BUT if i do on formload listbox add every ext 1by1 it works. if i use the load and hit scan it crashes
Using FB As New FolderBrowserDialog
If FB.ShowDialog = Windows.Forms.DialogResult.OK Then
For Each Ext As String In ListBox1.Items
[code]....
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Apr 6, 2009
I use a datagridview where the rowheaders frustratingly stay blank after I load the form. If I modify/add/delete anything the rowheaders pop up. then when I sort by clicking on a columnheader the rowheaders become blank again. all these actions (load/add/modify/sort) go through the same refresh function. I can't seem to figure out why the rowheaders sporadically show up. they should stay visible all the time. btw, datagridview.refresh() doesn't work
[Code]...
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Jan 7, 2010
One of my clients is going from Server 2000, SQL 2000 w/ VB6 to a new environment of Windows SBS 2008, SQL 2005 standard 64bit, w/ Visual Studios 2005. We have a custom built app written all in VB that has been converted. We already took care restoring the databases and setting up the odbc and such. After conversion, the app threw a couple of errors, and warnings, which have been fixed. We have a formload function that is supposed to populate 2 fields with dropdown information. One is a folders list in outlook and the other is a send recipient. The Recipient field populates fine and the outlook email box does not.Here is the formload code. I can't figure out why this would allow one box to fill and not the other.
Private Sub frmProcessEmail_Load(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Load
'starts up email
start()
[code]....
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Jun 3, 2011
is it possible to call form load event on button click
Following is the vb code i want same function in vb.net
Private Sub cmdaddcancel_Click()
Form_Load
[Code]......
in vb we simply call Form_Load is it possible in vb.net
For eg: IN VB.net currnetly i am on form no 1 and there is one button on click of dat button i want the current form should again load is it possible
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Jun 28, 2011
I'm currently having a problem dragging and dropping my label1.text to a richtextboxt which isn't created on design time...well im currently found a solution but i think it is only for a temporary solution because i use a drag and drop i drag it to a textbox then it willl transfer the data to the richtextbox....through the use of the textbox... here is the code ive come through..[code]...
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Jan 4, 2009
I am trying to do a very simple demo - load data from an access database and let the user manipulate it with a DataGridView. Here's what I understand so far:1) Create an OleDbDataAdapter by passing it a query and a connection.2) Create a DataSet by calling .Fill() on the DataAdapter with a DataSet object and a name for the retrieved data.3) Attach the DataGridView to the DataSet using the .DataSource property of the DataGridView and the .Tables property of the DataSet.However, I was told there is a much easier way to do it now in vb2008 using TableAdapters.1) Create a DataTableAdapter ( I can't actually find this object -what is it called?)2) Use the Fill method on the DataTableAdapter to connect it to a DataSet3) Now anything the user does in the DataGridView can be saved simply by using TableAdapter.Update.
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Jan 5, 2009
I'm working on a emulator program where I load all controls from a database. My database looks something like this :
Code:
IDPageTypeControl_Indexnr Property Data
1131Label 1 Text Lbl1
1161Label 2 Text Lbl2
[code]......
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Jan 31, 2011
Please help for database connectivity using vb2008 to ms access,and also how bound the controls like textbox going to database using vb2008 as front and back is ms access
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Feb 28, 2010
I created tab controls to seperate the controls till this point everything is OK. but the problem is I can't insert records into database from the tabs controls. but when I enter in all of tabs the insert statment is running.
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Nov 14, 2009
I have a form with a series of text boxes to accept user input and a button that should basically run an INSERT statement to a SQL database.I'm baffled at why I cannot figure out how to code this. All of the samples posted on the web are for VB 2005/.NET and the syntax is definitely different in 2008 because attempting to copy+paste to just test some of their source is just littered with errors.
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Dec 24, 2011
I am wanting to populate a form with check boxes and labels on starting of the app. My idea is to store to locations on the form in a database. I am creating an app that would have check boxes and labels that the user could check off to store points for completed tasks. The tasks on the form could change so I want the form to change as the tasks are changes with out re-coding the app.I am using VB 2003. I have searched but couldn't find anything.
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Feb 26, 2011
Is it possible to connect ado.net to an xml file and then make the xml file a data source on my project where I can bind controls to it in designer mode?
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Mar 24, 2010
im looking for an example script. I saw one yesterday but for the life of me I can't find it again today.The task I have is to allow the user to search 1 database table via input controls on an aspx page where they can select and , or , equals to combine fields, generating the sql on the fly with concat/stringbuilder or similar. (it runs behind the corp firewall)someone point me in the right direction of an example or tutorial I've been working on the page, but have run into problems. Here is the Page_load;
[Code]...
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Jun 29, 2010
I do have Visual VB.NET 2008 Express installed, SQL Server 2005 express installed, and I do know how to start a brand new project in VB.NET, and then add the database to the solution explorer, modify the tables/fields, etc. I know how to create a WinForm, add some controls (and name them and whatnot).....
So in MS Access I know how to use VB in the Code-Behind-Form to use the form in an unbound manner, and insert data into the tables via Visual Basic with SQL statements. I am looking to be able to begin the same sort of thing here, because I guess I have to start somewhere?
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Oct 18, 2011
I am designing programe that diplay student record from database to some asp.net control like Label and Dropdown control and nagigate the record using Next and previous button I want to view One Record at Once at a page Bellow is my Html Page
[Code]...
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Jul 29, 2011
I've used Me.Controls.Add() to add text boxes and now, I'm thinking how can I INSERT the data in these text boxes to database.
[Code]...
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Dec 19, 2010
I am building a program that does inventory control. I have multiple forms connected to same database. One of the forms I have a search function. When I was using the controls at the top of the page, it was working. I added buttons for the controls and now the database wont store anything. I can open the input form and I can add multiple inputs, close the form, open it back up, and nothing left in the database. I have also noticed that my database icon in the data source has a small red X in it. When I click on the icon, it is showing the db as closed. I can refresh it and it opens, until I run the program and it closes.
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May 22, 2009
I wanted to know if anyone could tell me how to access the Click_event.I have a boarderles form with a panel control which has the Dock property set to fill and on the panel I have placed a Label also with the Dock property set to fill. I also have a timer running.How can I get code to execute in the Label1 click event.I've tried doing it by using the generic Click_event and also with two variations of the Click_event Handles parameters
'Alternativ 1:
Private Sub Form1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
[code].....
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Aug 23, 2011
There is newer code in a follow up post. I suggest using the code in the later post rather than the code in this one. You can still read this post though. When designing a user interface, one should be conscious of how many individual controls are required to implement the functionality. In some cases an initial design may begin with many buttons or textboxes (for example) but then further review of
the actual required functionality allows for a reduction in the number of unique controls.
But other times, there isn't a better way (which will still make sense to the user of the application) then to have a series of many repeated controls. So in the cases where one can be certain that the best UI implementation for an application will require the use of multiple copies of a given control, then it often becomes necessary to maintain some method of managing all of those controls at various points
throughout the application. Doing so typically requires that one build up some collection of controls which can then be accessed by index in order to work with any given control; but this can lead to a lot of clutter in the code file which handles these control's events. For instance there will be some kind of collection declaration, some recursive routine to find all of the controls of interest, and then any number of event handler methods with long lists of Handles clauses, or additional code loops to wire up the event handling for each control.
Purpose Since most of this functionality could be considered a requirement regardless of the type of control being managed, or its required functionality, it may make sense to wrap all of the control management functionality into a single class. And since our first requirement is a collection of controls, then a base collection class could be the perfect starting point for our control manager. There are a number of existing thread around this topic, with some recent (at the time of this writing) ones being:[URL]..In this, and related, threads I have posted examples of a simple TextBoxManager and ButtonManager control. But again, with so much similar functionality required regardless of the control being managed, it would be technically possible to create a generic ControlManager(Of T As Control) class which can manage any type of control.
[Code]...
So in summary, one can facilitate managing a large number of user interface controls by building a "control manager" class which both encapsulates the list of control instances, and deals with adding and removing defined event handlers for every control it manages. The generic control manager class itself can be inherited and extended into a more specific class on a per-application basis in order to provide more application-specific functionality. Reed Kimble - "When you do things right, people won't be sure you've done anything at all"
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May 3, 2011
I was create Access database with Access 2003. I create VB project with Visual Studio 2005 Standard With connection wizzard I create coonect with this Access database, select all tablesI see this database inside Data sources and inside Server explorer Test connection is OK When I drag and drop table from Data sources, Wizzard don't create DataGridView, DataSourceBinding etc .. and I see popup window with mesage: Object reference not set to an instance of an object and then "game over"
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Nov 8, 2011
If I have the following ListView, how can I attach a SelectedIndexChanged event listener to the DropDownList so I can perform a command on the respective object? Imagine I have a list of new users and I want to add them to a usergroup by selecting the group from the DropDownList.
<asp:ListView ID="NewUsers" runat="server" DataSourceID="NewUsersSDS" DataKeyNames="ID">
<LayoutTemplate>
[Code].....
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Nov 10, 2011
I have a maximized form that has controls at the top of it and a large DataGridView that is docked below all the controls. Its kind of like the Ribbon in MS Office. The controls cover about 1/4 of the screen at the top. I would like a way for the user to click a button to hide all the controls then automatically expand into the place the controls were so the user can view more data in the DataGridView and visa versa. For example, in MS Office Excel you can hide the ribbon by clicking a tiny button that has "^" on it.
I'm not very familiar with all the controls in Visual Studio so I would like to hear some recommendations. Is this situation ideal for a SplitContainer or ToolStripContainer or am I way off base here?
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Nov 20, 2011
I've got a couple of these NumericUpDown controls I put on a form. Without describing too much about the form I basically want to update some variables each time one of these NumUD controls changes value. So for each NumUD I have a call to a Recalculate subroutine within their "changedValue" event.
There are actually two problems. First, if I initialize the "Value" property to something other than zero in VB2010 at DESIGN TIME it won't even open the form when I hit RUN. It gives me a "No Source Available. No symbols loaded for any call stack frame" error. The error box says "InvalidOperationException" was not handled. So if I try to set the initial value of the Value property to anything but zero of either I get this error.
[Code]...
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May 13, 2009
I've been building controls for many years professionally and personally, but even back in VB6 days I just could not work this out. After all this time I remembered about it again.If I create a usercontrol/containercontrol and add one or more controls to the controls surface, I just cannot figure out how to access the controls at design time.
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