Forms :: Dynamic Buttons Made With Array And Called By Addhandler

Sep 2, 2009

I am fairly new to VisualBasic .NET (2008). I'm creating an application that, when a number is entered into the textbox, a new form window is created and populated with buttons. Each button starts the same command, but with a different parameter (the parameter being the pertinent record number found by the search).'The records are asset tag numbers.The procedure works fine if there is only one result.But the search allows for partial numbers and that's where the trouble begins.If two or more results are found, each button is configured with the last number found. The button being clicked doesn't tally with the proper ID number.[code]

What I didn't count on was that the event is only called when a button is clicked. When buttons are made, they are not assigned at that time.I've had problems trying to carry over the (current value) for pcArray(i), hence having it populate that form3_text field. When trying to add in a second object to be passed, I get the following error:"Method prtivate sub DynamicClick(sender as object, pcNameInfo as object, e as system.eventargs) does not have a signature compatible with delegate sub event handler with delegate 'delegate sub eventhandler(sender as object e as system.eventargs)."I tried manually entering a "Delegate sub eventhander" with the pcNameInfo object and VB 2008 ignores it.What can I do to get each newly made button to be told to run the RemoteIn(pcArray(i)) process properly?

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Dynamic Buttons Opening Different Forms

Nov 13, 2010

Firstly though, I'll have to mention that I'm a relative newcomer to vb.net and don't really know that much about advanced functions.I have my main form which dynamically generates 15 buttons.

Each of these buttons will need to open another form, depending on which form has been assigned to that button in a config file (the config file isn't yet done, as I want to get it working simply by hardcoding the name of the forms for the time being)

The way I have it in my head is that I would assign the form name that needs to be open to the name of the button, if that makes sense....However, I have absolutely no clue how to do it, I've tried a couple of things but to no avail.

Here's my code, and I have no problem changing any part of it if it will help things along, this is just the only way I know how to create dynamic buttons.[CODE...]

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Dynamic Buttons Opening Specific Forms?

Jun 6, 2011

I have a form which gets populated by 15 buttons dynamically at runtime (these need to be dynamic as there will be a user config file at some point)What I need these buttons to do is to open a specific form when clicked. Which form that opens will be dealt with in the config file.

Public Class frm_MainScreen
Private Sub frm_MainScreen_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim count As Integer
Dim ImageDir As String

[code].....

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Silverlight VB AddHandler To Dynamic Object?

Dec 16, 2011

We are migrating an application from C# to VB to meet our project's needs but stumbled upon a problem with event handling in VB.

The application uses a COM Wrapper access a scanner in Silverlight. The object is created dynamically in the code, and an event is added to "AcquirePage". This requires elevated trust of course.

Code in C#:

dynamic TwainSession;
(...)
TwainSession.AcquirePage += new AcquirePageDelegate(AcquirePageEventHandler);

As the only real "equivalent" of dynamic in VB is Object, we use:

Private TwainSession As Object

Everything is fine up to the point we want to handle an event of this Object. Because we are in Silverlight, we cannot have knowledge of the Object's structure or events, hence the need to create it dynamically. In C# we simply use "+=" to add a handler to an event but:

AddHandler TwainSession.AcquirePage, AddressOf AcquirePageEventHandler

In VB gives: 'AcquirePage' is not an event of 'Object'

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VS 2008 AddHandler To Dynamic Object?

Jun 3, 2009

I have some code to create dynamic serial port objects, now Im trying to add an event handler to the object so I can capture the dataReceived event. But the vb designer is saying ".datareceived" is not en event of 'object' in this case serialports(dComPortNum)

Public serialports(5) As Object
dComPortNum=1
serialports(dComPortNum) = New SerialPort

[code]....

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Forms :: Get Information About Dynamically Created Array Of Buttons

Jul 2, 2009

For example, when I click on the btn(5) I would like the textbox1 says: "5"

[Code]....

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Asp.net - Creating A Dynamic Dropdown, After A Selection Has Been Made

Oct 6, 2011

I am trying to create a dynamic dropdown after a dropdown has been selested (in asp.net vb)

For example: I have a dropdown question that asks: What brand of car do you drive (Toyota, Ford, Honda, Nissan, Chevrolet)

When the brand is selected I want another dropdown to appear under it with new chocies

For example: If Nissan is chosen, the second dropdown will be populated (from the database) with (Altima, Maxima, etc...)

And in some cases I would like a text box to appear, but If I can figure out the dropdown portion, I am sure I can figure out the textbox.

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Use AddHandler To Designate An Array Of Timers?

Feb 28, 2010

I am trying to use AddHandler to designate an array of timers to call a function when they have elapsed.

Below is my

Public Shared Sub CreateCooldown(ByVal name As String, ByVal duration As Integer, ByVal timetype As String)
cooldowns(a).Name = name

[Code]....

Unfortunately, when the AddHandler line is called, it instantly fires the cd_Tick function (which I do not want to happen until the timer has elapsed), then never fires it again.

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Make Buttons Made During Runtime With A Click Event?

Sep 6, 2009

I am trying to make buttons made during runtime with a click event. I have figured out the click event, by using addhandler, but is there a way to get info from the button, and use it in the sub? Here is my

[Code]...

the buttons will be created according to a variable that changes during runtime, so I won't know the names of the buttons.

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Dynamic Form Buttons - Place Buttons On Each Form That Will Show The Next Available Options?

Sep 1, 2010

I have 7 Windows forms.The order of the forms is defined within a configuration file.I want to place buttons on each form that will show the next available options.The Next button will move the next form in the list.The Back button will move to the previous form in the list. The Finish button will execute the final piece of code.The Cancel button will exit the application.If the user is on the first form, then there is no Back button.If the user is on the last form, then there is no Next button, but there is a Finish button.

Example 1:

Form1 - Next, Cancel
Form3 - Next, Back, Cancel[code]....

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Made A Listbox, And Also A Custom Class Called "Enemies"

Mar 26, 2010

So I made a Listbox, and also a custom class called "Enemies". I used a Bindingsource to Bind "Enemies" to the Listbox. "Enemies has three properties which are: "Name as String, Health as String, and Dead as Boolean".The thing I need is when I add a Enemy to the listbox, I want the BackColor of the item to either be Red or Green, depending on if the Item.Dead property is false or true.

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Made Called "ProdDet" And Jumps Out Of The Whole Method?

Jun 3, 2010

I am trying to learn how to create relations I got a sample from a web site and it works great, but when I tried to make one; it is not working. Can some one tell me what I am doing wrong. It gets down to the last relation that I made called "ProdDet" and jumps out of the whole method. The error message says the following:

System.ArgumentException: These columns don't currently have unique values.
at System.Data.ConstraintCollection.AddUniqueConstraint(UniqueConstraint constraint)
at System.Data.ConstraintCollection.Add(Constraint constraint, Boolean addUniqueWhenAddingForeign)
at System.Data.ConstraintCollection.Add(Constraint constraint, Boolean addUniqueWhenAddingForeign)

[Code]...

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Dynamic Control Called From Vb File Code Raises Object Reference Error

Jan 7, 2010

In a ASP.NET app from a procedure IN a VB code file a dynamic control is called. The first problem may solve the second. In the following line of code I am getting an "end of statement expected" error at the following line.

[Code]....

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Removing Certain Dynamic Buttons On A Page?

Nov 28, 2008

I am dynamically creating buttons on a page, and want to be able to remove only certain block of them. I have no clue how to do this.. Right now I am clearing the WHOLE form and then redrawing everything.

Here is my code I am using to create.

Dim Buttons(99) As Button
Dim cmd As New SqlCommand(strSQL, oSQLConn)
dr = cmd.ExecuteReader()

[Code].....

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Save Dynamic Ribbon Buttons?

Apr 17, 2012

I'm using VB 2008, and I have created a Ribbon (Visual Designer) Add-In for excel 2007.When the user clicks a "Save" button, that was created at design time, this buttons click event prompts the user for the new file name...then saves the workbook.then uses the new file name as the label for a dynamically created button that is placed in Menu1, on Ribbon1...all of this works just fine.The problem is, this dynamically created button in Menu1 disappears when excel is restarted. So, I setup user scope settings in an attempt to save these dynamically created buttons.The settings properties are as follows:

Name = RibbonSettings
Type = Microsoft.Office.Tools.Ribbon.RibbonMenu
Scope = User[code]....

The problem is, this seems to lock Menu1 and the dynamically created button never gets added to Menu1. Without this, the button is added to Menu1 just fine, but disappears upon restart.How can I save these dynamically created buttons in Menu1 on Ribbon1?

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Use /change Attributes From Dynamic Created Buttons?

Aug 15, 2011

how can i select these buttons in the program ?I can change the propertiies inside the click event because i know wicht button i pressed thru the sender of the event but i don't find a way to adress the other buttons outside the event.

please note that i am a beginner in programming in vb.net
For i 0To 1
For y = 5

[code]....

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VS 2008 - Dynamic Radio Buttons & Syntax Errors

Jul 27, 2009

I am not certain how to do this, but it seems like it should be easy to accomplish.I have four radio buttons that I want to assign answers to, one of which will have the correct answer along with three other answers that have incorrect answers.The answer button I want to set up as a randomly assigned button, with the other three assigned after the fact.'This code works fine to assign it to Radio button #1.rbGenericName1.Text = m_dtDrugs.Rows(DrugNum) ("GenericName").ToString()I want it to be a randomly assigned button, where the location that the "1" is residing, is a randomly assigned value between 1 & 4. Here is what I have so far, but it has a Syntax Error.

rbGenericName & RndNum & .Text = m_dtDrugs.Rows(DrugNum) ("GenericName").ToString()I know that the above code is not correct, I am just trying to represent what I am trying to accomplish. I already have a random number generator in place, I am just looking for the correct syntax.

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Dynamic Creation Of Picture Boxes, Buttons, And Labels For Each Item

Apr 7, 2011

I'm currently working on a program where I'm trying to dynamically create a picture box, a button, and a label for each item in a text file. Any ideas on how to do this? What I have: a plain text file with a list of numbers. Each number corresponds to a location. When that file is read, I want to create a picture box, a button, and a label related to each number. If I want to add something to the screen, all I Have to do is add a number to the file. So, lets say the file has. 1, 2

When the file loads, it will create a unique item on the display for each location. say pic1, button1, and label1 and pic2, button2, and label2. Right now, if I add something to the file, I have to go back into the editor and manually add everything. Which is a pain.

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AddHandler To Dynamically Created Buttons That References A Dynamically Created TextBox?

Dec 16, 2011

I am adding a grid of buttons to a form at run-time, and all of then use the same Handler.My question is : Is there any way I canadd the TextBox at run-time ?I know how to but without it on the form, the IDE isn't very happy about the "MyClick" Sub - TextBox1 is not declared......

' some logic here to make nice rows and Columns of buttons
' with different .Text and .Name
Me.Controls.Add(btn)

[code]....

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Converting Client Side HTML Radio Buttons To Asp.net Web Controls With Dynamic Ids (VB)?

Jan 12, 2011

I have the following client side code in .aspx page within a datalist itemtemplate that takes questions from the database like this:

<Itemtemplate>
<b> <%=GetQuestionNum()%>)
<%#Server.HtmlEncode(Eval("Text").ToString())%></b>

[code]....

but I'm finding it impossible to work with the html controls, i.e get their .text value from codebehind, or adding events! better way to replace the html with suitable asp.net web controls or from the codebehind and output it.

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Create Dynamic Buttons At Run Time Based On Database Records And Implement Events For Them

May 11, 2010

I have to create buttons at rum time based on database records and implement their events.

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Pass Data Between Forms Made At Runtime?

Aug 3, 2009

How to pass data between forms made at runtime? I need to check the data in the form at runtime and accordingly use it in SQL queries to retrieve data from database.

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Forms :: Event Called On Load

Jan 13, 2010

I got a combobox, that when the texted is changed, its supposed to run a query to update a field in my database. Here is the issue The event im using is TextChanged, well unfortunately when the page loads, it changes the text when populating the values. Is there a way to make this event wait to fire until after the list is populated? Ive ran into this problem before with datetimepickers, but I was able to offset it with a boolean, but this combobox is calling the textchanged event everytime it adds an item to the list.

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Tabbing Not Working In Vb6 Forms Called From .NET?

May 23, 2010

the message pumb of vb6 forms is taken by the hosted application (.NET) , we are currently in a process of calling our system from .NET but after using ShowWindow Lib "user32 API i stuck into same problem of Tabbing not work in correct way as it had been set in design time , ChaosTheEternal solution dosnt show form as modeless which its reuired to me?

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Building A Form With Just A Combo Box In It That Contains A List Of Other Forms That Made?

Jan 17, 2010

I'm building a form with just a combo box in it that contains a list of other forms that I made. I want to program the combo box so that if a user opens it and clicks on "Web Browser", that form with the combo box will close and the web browser that I made will open. Another example is that if a user selects "Media Player" from that combo box, the form with the combo box will close and the media player that I made will open. How would I program the combo box to do this?

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Create An Array Of Richtextboxes Called Rbox?

Jan 14, 2009

i need to create an array of richtextboxes called rbox, and position them in a tablelayoutpanel called tlp.

i have these snippets of

dim rbox(10) as richtextbox
tlp.Controls.Add(rbox(i), 1, 1)

i know that the second line of code has the arguments of (control, row, column). the row and column is good because that allows me to place them in the table and i need this but the control part doesnt work.

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Forms :: Re-using Same Buttons, TextBox, Combobox In Different Forms?

Jun 18, 2010

I am creatting an windows application software in which many controls like Buttons, textBox, combobox are remain same in 12 different form. In this 12 diff form the activity of those controls will remain same.The scenareo id

1. I have 12 forms.

2. Each form containing 3 labels (Country, State, City). These labels indicates 3 combobox from which we can select location.

3. Now I need to use these 3 controls in all 12 forms with same activity.

4. When I change forms to another, these buttons shud remain same.

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Close Projects Or Forms Than Called By ((shell)) Function?

Aug 17, 2010

how to close projects or forms than called by ((shell)) function in vb6?

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Forms :: Creating A Program Called Workshop Selector?

Apr 19, 2010

i'm creating a program called Workshop Selector. It has 3 list boxes, one with the 5 workshops, second with 6 locations, and the final is the list of costs. The user selects a workshop, a location, then hits the Add Workshop button, which calculates the costs and adds the cost to the third listbox. Soo, to my question.

There is an additional button called Calculate Total that adds the values of the costs in the cost listbox and displays the total in a textbox. The code i currently have that works just fine is --

Dim one, two, three, four, five, total As Integer
lbCost.SelectedIndex = 0
one = CInt(lbCost.SelectedItem.ToString)
lbCost.SelectedIndex = 1
two = CInt(lbCost.SelectedItem.ToString)
etc..etc..
total = one + two + three + four + five
tbxTotal.text = total

While this works, i have no idea of knowing how many times the user will add a cost to the cost listbox. therefore id have to make many many variables, and other issues occur.So is there a way i can do this with a for loop? declare a global variable like

Dim costcounter as integer

then at the end of the add workshop cost btn click procedure use:
costcounter = costcounter + 1

That way i kno the exact amount of times the person added a cost?

Then create a for loop like

Dim intcount As Integer
For intcount = 1 To costcounter
code....
Next

Would this work somehow? but what code would i have to input within the for loop to scan each selected index, and then return values that can be added together and displayed in a textbox?

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Winforms - Where And When Is InitializeComponent Called In Windows Forms Control

Jun 25, 2009

In C# Windows Forms, a user control's InitializeComponent is called from the form's/control's constructor. When I create same scenario in VB.NET I don't get a constructor, and I can't locate a place where InitializeComponent is called.I need to call my code between InitializeComponent and when the control's Load event is raised, preferably still in the control's constructor. How do I do this in VB.NET?

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