Accessing Controls Within Controls On A Form

May 26, 2012

I have a module level sub that I use to clear text fields etc on my forms:

CODE:

The problem I have is in the last few lines of code as I'm not really sure how to access the text boxes contained within the tab controls (of which there are many tabs and many text boxes).

This is the closest I've got but I am getting an "option strict on disallows late binding" error on the tabCtl in the following line.

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Accessing The Click Event In Layered Controls Or When Multiple Controls Are Docked Within Each Other?

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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Accessing Controls Inside ASP.NET View Controls (Event Handling)?

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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Accessing Controls From Another Form?

Jan 19, 2011

how can i access the controls that i made from another form? i'm also going to also use function (on the same form as the controls) that access that controls?

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Accessing Multiple Form Controls Using A Variable For The Name?

May 23, 2012

I'm trying to iterate through a group of ComboBoxes and set a property using a concatenated string & variable to represent the name of the control. However, I can't get the instance of the form to recognize the (String & Integer_Variable) as one of its controls -- and so it doesn't recognize any of the appropriate properties or subroutines as members of the System.Windows.Forms.Control.Is there a cleaner way to do this?

For myTempCount = 1 To 6
If tempValue < Me.("ComboBox" & myTempCount).Items.Count Then
ComboBox.SelectedIndex = tempValue 'appears to work -- how?[code].....

This code was originally VBA / VB6, which I put through ArtinSoft's Visual Basic Upgrade Companion (VBUC). FWIW, I'm using Microsoft Visual Basic 2010 Express.

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VS 2008 Accessing The Controls On A Form Which Is Not Created?

Jan 30, 2011

When I try to access the controls of a form which is not yet created (i.e. to modify the contents of a text box , to press a button etc) , I fail , usually without even an error message . I found out that the only way to make my program go right is to take care that the form is first created before I try to access anything on that form . However this means I must use the Show method to create it and then to Hide it , which leads to an instant awful optical effect . I remember back in VB6 there wasn't such a problem ; it seems that in VB6 each time I accessed a control on a not-created form led to the form being created silently . Is there any way I could do that in .NET too in order to access my precious controls ?

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Add Controls To A Form In Code And Set The Properties Of The Controls?

May 24, 2009

How can I add controls to a form in code and set the properties of the controls using the With statement?Also I would like to know how to add a container control and then add a control to that container.

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Controls Not Return All The Child Controls For The Form?

Apr 15, 2010

I have a slight problem With an enumaration of child controls on a form. The following code will not get but about have the controls that are on the form. The controls show that the count is correct but when it goes through the loop it skips over some of the controls. If you run it through the enumeration two or three times it will get all the controls a few at a time. The solution uses two forms, one that has the controls and the other that labels are made and displayed on. The Tx is just a index to add a number to the label.name and rename the label. So each label is identified seperately. This works for all the the controls that are seen in the for each loop.

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Pass Usercontrol Controls Or Form Controls?

May 11, 2009

I created a class that can take either usercontrol.controls or form.controls as a parameter,how can i pass either to that class? as a property or how?

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Accessing Controls Between Forms?

Sep 4, 2010

I have a thread running on a child form, I want to activate a control on the parent form but cannot. It works fine if It's done from the child forms UI thread:

(FormMain.SetControlPropertyValue(FormMain.RBSQL2005, "Checked", True))

but not from a thread running on the child form:

Public Class FormRestoreDB
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim t = New Thread(AddressOf UpdateListView1)

[code]....

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Accessing Excel Controls From .net?

Feb 25, 2008

Is there anyway of access the value of a chekbox in a excel worksheet using vb? I need to import the answers of a survey that is in multiple excel files.

I´ve tried

wsheetB.OLEObjects("CheckBox1").Object.Value

but I get a com exception

Exception from HRESULT: 0x800A03EC

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Accessing Controls Of Any Opened Window

Apr 2, 2009

I have a nokia phone, which is connected to my PC through Nokia PC Suite. Whenever I get a call on my phone, a small window appears above System Trey. I want to read out the number of caller that appears on that window through my program, so that I can use it further.

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Accessing Controls On A Data Repeater?

Mar 24, 2011

I have placed a button on data repeater (called datarepeater1) so that it is repeated with other controls. When I click this button, How do I access/reference the text value of a textbox control called TxtAnimalID on the same row? (This would be something like the current row I am on).

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ASP.Net - Accessing Controls From Separate Classes?

Jun 23, 2010

I have an ASP.NET Web Site I am creating in Visual Web Developer 2008 Express using Visual Basic as the language. It is actually a rewrite-with-mods of an existing ASP script and I'm trying to chew what I've bitten off. I created my page with a text box (txtOutput) on it and since the end product is very complex, and it's generally good practice to separate like functions, I have created 4 separate classes in the App_Code section. My main page is Sync.aspx and has a code file Sync.aspx.vb with it. One of my code files is SyncDatabases.vb and in it I have created

Public Class SyncDB

In that class I have created some routines such as

Public Function ReadMSDB(ByVal SQLString as string) as Boolean

In this routine I want to put information in my text box txtOutput on the main form (the default - Form1).

My problem is that if I try:

Form1.txtOutput.Text = "Hello world"

or just

txtOutput.Text = "Hello world"

it says Name 'Form1' (or 'txtOutput') is not declared. I am sure I am missing something simple but have no clue what it is. I assume it's the fact that the write command is in a file (class?) outside the file (class?) containing the page itself but I don't know how to address it properly.

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VS 2008 Dynamically Accessing Controls?

May 19, 2010

I am trying to create an app that adds tabpages into a tabcontrol which has a several controls on each tabpages. However how do I access those controls?lets say the controls I add are named label1 and label2. the tabpage is named infoTab1.

If I do inftoTab.infoTab1.label1.Text = "some text" I get an error saying infoTab is not a member of 'system.windows.forms.tabcontrols' cause in design time it isn't added yet.So how is this actually done? am I on the right track?Any tutorials are more then welcome, tried google but only get basic concept stuff comes out it or trying the wrong keywords.

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VS 2010 Accessing Controls Using Strings?

Dec 19, 2011

I want to be able to use a loop and reference controls using a string. The following code works for textboxes.

dim myControl as Control
dim ControlName as string
dim LoopCount as Integer
For LoopCount = 1 to 3

[code].....

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Accessing Controls Created Dynamically In Another Procedure?

Feb 13, 2009

I'm having trouble trying to access a list of comboboxes created dynamically in one procedure from another. I believe I have to add in an event handler but I not sure how this is going to work. Or should I change the array scope?

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'variables declared here.

[code].....

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Accessing Controls On A Panel Without Using Control Arrays?

Mar 2, 2010

I have an application that has a grid of rich text boxes on a panel. I would like to access and modify the text in the various rich text boxes during run time. I know this has been brought up a bazillon times over the years, but I would have done this as a series of control arrays in VB 6. Below is a simplified representation of how the textboxes would appear in a panel if control arrays were availble:

rtbA(1) rtbB(1) rtbC(1)
rtbA(2) rtbB(2) rtbC(2)
rtbA(3) rtbB(3) rtbC(3)

I find that I can access the properties of the rich text boxes via panel1.controls.item(x).text, for example, where x is the control index assigned by the panel when I dropped the controls on it.

Since I created the rich text boxes at design time and dropped them on the panel, it has arbitrarily assigned the index values, and they are not in the index order that I would desire.

How does one re-assign a control's index at design time for a controls collection on a panel? And if one has 24 text boxes on one panel, is there a way to break them into subgroups, such as rtbA(), rtbB(), rtbC() with their own index values?

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Separate Thread Accessing To Main Ui Controls?

Aug 25, 2009

how to access the main ui's labels from a delegate method?

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VS 2008 Accessing Controls Inside A Panel

Jun 26, 2009

I am trying to access controls that were added to the form and created code all before I added them to a panel. Upon form loading I create the form handle into a dictionary. then I call that dictionary ID and add data to the controls. I can't seem to add data to the controls inside the panel.. I think it is something simple. I may just be over looking the method I need to call.

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Interface And Graphics :: Accessing Controls Using Multiple Forms?

Aug 28, 2008

I don't know the best way to use multiple forms in VB, but I have created a problem and I'm not sure where it came from or how to fix it.

Background: I start the program at Sub Main. This is the main function:

Code:
Module modFunctions
Dim frmD As frmDAQ
Dim frmT As frmTrendView

[Code].....

it works, but I don't want to have to change the entire project.

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Write Controls Text Into A .txt File And Read Them Form .txt File To Controls Again?

Jan 16, 2012

I have a form. And some controls(such as TextBox,ComboBox,etc.) on the form.Now,I want to store the controls' Text into a .txt file(or any other formarts).Then I want to read the text in the .txt file to my controls.

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VS 2005 Accessing The Controls Of Multiple Data Window(mdw) Forms

Oct 21, 2009

I have to make some automatization on a web server, I use Visual Studio 2005 Visual Basic Windows Console Application. I want to make a load/performance test of the web server, so I open several Internet Explorer instances, and I login the application, that is not a problem. But after that I have a mess on the page and I cannot make any more automatization...The composition of the page after the login is like this: I have the default form, another form and a multiple data window(mdw) controller, which dinamically can switches the forms on this part.

The problem is that I don't know how to access the controls of this mdw forms. I couldn't find much about this mdw controller and I am not an expert.

My code is here:

Imports System
Imports System.Diagnostics
Imports System.Web.Ui.Webcontrols

[Code].....

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Manage A Large Number Of Similar Controls In A User Interface (such As Button Or TextBox Controls)

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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Control Recommendations - Controls At The Top Of It And A Large DataGridView Is Docked Below All The Controls

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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NumericUpDown Controls - Update Some Variables Each Time One Of These NumUD Controls Changes Value

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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Container Controls Access Controls At Design Time?

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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Draw A Rectangle Over Some Controls So That The Controls Are Partly Obscured

May 18, 2010

I want to draw a rectangle over some controls so that the controls are partly obscured.

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Forms :: Dynamic Controls Disposal - Only 50% Of Controls Removed?

Sep 17, 2010

I have a query about dynamically added controls to a form. I have a series of buttons which are created and added at run time. I have a two drop down lists and two buttons which are created at design time. Button 1 creates a series of buttons called "Test 1.x" based upon the selection of the two drop down lists. This works fine and am happy with the logic.However.... Button two should remove all the dynamically created buttons from the form.This does not happen. What does happen is that 50% of the buttons are removed starting with the first one. WHen checking the loop it only enters the loop half the amount of times that there are buttons. Very strange. When the loop is run repeatability it will remove all controls. Why will my logic not remove all the dynamically created controls at once? What is wrong with my logic?

I attach two code snippets and the .net file for your consideration.Button method which creates the dynamically created buttons from the two drop down lists and adds to form

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Count As Integer
Dim MaxHours As Integer

[code]....

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Looping Controls / Migrating Among Controls In Control Array

Jun 19, 2009

i have created control array , now i wann to loop around as well wann to find which control has triggered the respective event my code :

[Code]...

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