VS 2010 - Calling A Control Not Yet Created?
Sep 11, 2010
I have create a small routine to Generate Tabpages on a tabcontrol, and on each tabpage I have Created a label and a combobox, my problem is that since Im generating them in the code and the name of the two controls change based on an index.. ie. Combobox.name = "cmb" + Index I need to be able to retrieve the selected item from this combobox in order to move on to my next routine.. but I do not know how to reference these comboboxs since there is no pre or defined named for them.
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Feb 20, 2012
A thread listens for incoming information from a server will add the received string to a custom control (containing a textbox and a listbox, I've called it console). This requires an invoke so I used the following
Dim InvWriteCons As Console = Gary.ChatCons
Dim INvWriteText As String = "DEFAULT"
Public Sub InvWrite(ByVal cons As Console, ByVal message As String)
[code].....
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Nov 17, 2009
I'm creating a certain number of objects based on some templates that I have available to the user. Then, I have a module created for each template where I will be doing some math operations, etc.
I know how many objects will be created, but of course visual studio doesn't at design time.
Dim newhydzone As PictureBox
newhydzone = New PictureBox
newhydzone.Name = "Zone" & Form1.hydzonecount
[Code].....
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Jan 28, 2010
I have problem in calling DLL file in VB.Net that I had Created it in C++... it give me this error message: "An unhandled exception of type 'System.EntryPointNotFoundException' occurred in test_dll_1.exe. Additional information: Unable to find an entry point named 'add_1' in DLL 't1.dll'."
This is my code in C++ (header file)
[CODE]............
The one in the main
#include "header_1.h"
double add_1(double a, double b){
return (a+b);
[CODE].....................
This code only for creating dll and I did created it correctly and i had tested it in c++ and it did works.... but in the Vb.net I had no luck with it...This is the code that I wrote it in the VB.net
Imports System.Runtime.InteropServices
Public Class Form1
<DllImport("t1.dll")> Public Shared Function add_1(ByVal a1 As Double, ByVal a2 As Double) As Double
End Function
[CODE].....................
And, I did put the .dll file in the bin folder, but also with no luck...
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Apr 14, 2012
I am creating an Excel Add-In using Visual Studio 2010. My intention was to add a context menu to a cell and perform some action on the selected cell or cells. Here is the code I have got as of now
[Code]...
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Aug 13, 2010
In one application, I need use 4 simultaneous threads.When the threads finished, I need to update the text of a TextBox.So, I create 4 Textbox, and I wanna the threads change the text to FINISHED.Each thread change one distinct TB.I use this "example"
Dim Terminados As Integer = 0
Private Sub frmEnviarMensagem_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Timer1.Enabled = True
Timer1.Start()
[code]....
The problem is, I have an error in the red lines.The error is: INVALIDOPERATIONEXCEPTION "Cross-Thread operation not valid: Control tbPlaca1 Accessed from a thread other than the thread it was created on."I don't use cross threading. Each TB only was accessed for the correspondent thread, and for the "main program".
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Jul 16, 2009
I have an application that dynamically creates winforms.
Dim NewS As New Form
Dim NewT as new Timer
NewT.Interval = 5000
[Code].....
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Nov 11, 2010
I hope the question makes sense, anyways. I'm looking to know if in VB.NET, when we call an object's constructor, is there some kind of a reference that points back to the caller? I'm interested because of a corner case where I want the object being created to first be able to validate the existence of some data in the caller before it allows itself to be created. If this validation fails, I plan on throwing an exception. This corner case will never happen at runtime unless the object being created is used improperly by a programmer. The object being created is not inheriting the object I want it to validate, so I can't do anything with the MyBase qualifier.
It's bit of a "future-proofing" issue that I have a (bad) habit of doing. Not critical -- I can always leave stern comments behind as a last resort. Wanted to know if this was possible.
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Aug 15, 2009
I am adding some controls to a panel at run-time. After I add them I need to loop through the panel in a different sub and test for a specific control. I was assuming that if I named the variable that the control is set to to "a", that I could then test for this by saying
[Code]...
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Jul 16, 2009
I have an application that dynamically creates winforms.
Dim NewS As New Form
Dim NewT as new Timer
NewT.Interval = 5000
[code]......
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Apr 11, 2009
how can i call a VB function - deleteevent() in usercontrol.ascx.vb from a javascript function in clickhandler(e) in usercontrol.ascx. The call should cause a postback because I need the usercontrol to display the changes.I am currently trying to do it by using a linkbutton with style display:none, and calling its click event from the javascript function. But i dunno how to call the click event.
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Dec 9, 2009
I am trying to create a sub routine that I can use to clear all items on various ComboBoxes on a Form; this is the code I was trying to use [To no avail]:
Public Sub Clear_ComboBoxes(ByVal ComboBox_Name as String)
if Controls(ComboBox_Name).Items.Count > Nothing then
Controls(ComboBox_Name).Items.Clear
end if
End Sub
I am writing the code on a seperate module to the Form; which means I can't use ME.Controls; but Form_Name.Controls doesn't seem to work either.
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May 30, 2009
I have a panel2 inside a split container that has several user controls loaded into it. Panel 1 has an exit button and I want to call one of the sub routines that is in one of the user controls loaded into Panel2.
Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
Dim dialogMessage As DialogResult
Dim a As New ucTimeTracker[code]......
This line is giving me trouble "ucTimeTracker.autoWriteFileOnExit()"
I am getting (reference to non-shared member requires an object reference).Basically I want the exit button on frmMain. SplitContainer. Panel1 to call autoWriteFileOnExit() on the user control named ucTimeTracker that is loaded into splitContainer.Panel2
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Jul 16, 2011
it's just for a program registration. i would store all of the registration codes in the access database, then export it to XML, then upload it to my web host. I would then somehow connect it to my Visual Basics login form (Which I have already made). If this can't be done, having them register through the form and having all the allowed codes on the internet (So i can easily edit them)!
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Apr 9, 2010
I created a DatePicker user control (ASP code below, no code behind) which is simply a textbox, image button, and a sometimes visible calendar.
[Code]...
Can I somehow tie or pass the value of the TextBox as the value of the whole control to use in the calling code? EDIT: My actual goal here is to be able to tie the SelectedDate as a parameter of a database query. I was able to select values for the other parameters in a controls dropdown list in a query parameter configuration window.
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Apr 15, 2010
I have successfully set up a timer in visual basic, see the code below. My timer uses case statements and at specific case/time it calls a function, 'ShuttleA'. 'ShuttleA' function, is a function that 'getskeystate', which inturn from the user interface tallies a response in a text box. My problem is that the program runs fine when calling the function at eg; at 10 seconds, case 10. But I want to be able to call the function e.g., at 8 seconds to 11 seconds. Or create a tolerance of e.g., 1 second either side of e.g., 10.
PrivateSub Timer1_Tick(ByVal sender As System.Object,ByVal eAs System.EventArgs)Handles Timer1.Tick
Dim secondsAsInteger
seconds += 1
Label1.Text = seconds
SelectCase seconds
[Code] .....
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Aug 7, 2010
I have created two dynamic objects in my project; one being a button and the other a listview. I have added addHandlers to the button so that I can print out information from the listview. The problem is I don't know how to access the listview through the button_click Sub.[code]...
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Apr 26, 2009
this is what i have so far:
[Code]...
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Sep 15, 2011
I have a strange behavior with a dynamically created TextBox-Control. The control is created in the handler of the Load-event of a dialog-form like this:
[Code]...
Now the situation is, that in most cases it works fine. But a few of my customers report that the TextBox not appears on their dialog - it's not there! That's all, nothing more to say.hints or reports about known pitfalls with dynamically created controls which could explain this (sometimes) strange behavior and how I could fix it (I have to create this control dynamically due to some reasons).
BTW: The program is built with Visual Basic 2005. And the customers with trouble are spread about the OS's (XP, Vista, 7).
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Jul 10, 2009
I am trying to embed an activex control (.ocx) created using VB6.0. It's a bare bones usercontrol with no extra code, just for testing purposes. But when I embed this control in one of our windows forms in our legacy development environment (Gupta Centura V3.1), running as an MDI child in an MDI context, the main menu bar of our runtime MDI disappears.
[Code]...
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Feb 16, 2010
i been trying to figure out how to get the control name and other properties of a dynamically created control. I have actually dynamically created a label andnamed it. how do i retrieve its name and other properties.?
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Mar 20, 2011
I'm writing a program that inserts controls onto a webform dynamically. Depending on a variable, I add either a textbox, a set of radio buttons, or a set of checkboxes. Later, after a user clicks a submit button I need to use the controls to determine if the user is submitting the correct answer, but when I try to reference the id of a control, I get "txtAnser is not declared. It may be inaccessible due to it's protections level. Here is the .aspx page (it's the standard content page of a master page):
[code]...
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Apr 17, 2009
I have created an animated button using Microsoft Blend 2I want to use it in my Vb.net windows application
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Oct 5, 2010
I have an ImageButton and a FileUpload controls in a child page of a master page. I would like to achieve something like when user click on the ImageButton, the browse file window will pop-up like what we did when we click on the Browse button of the FileUpload control.How can call the browse file window of the FileUpload control when i click on the ImageButton?
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Apr 7, 2010
i'm trying to learn about user controls. I created a user control that has a textbox and a button. What i'd like to be able to do is when i click the button in the user control, populate a label in the aspx page. I understand that i could just have a button on the page that uses some properties on the user control to get that information.. but i'd like to know how to do it with the button the user control.. the reason for this is the button is just an example.. a learning tool. if i can get this working, i'd likely be putting thing in the user control that might require this kind of passing information. Anyway.. i've found some c# examples that i tried to get working as vb.. but once started getting into the delegates and events..
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Sep 21, 2010
I have a custom control's library. Now there's a control which looks like a panel, and when it opens up I want to animate its vertical growing like this:
For h As Single = 0 To finalHeight Step 0.5
Me.Height = CInt(h)
' HERE I WANT TO CALL DoEvents'
Next
Me.Height = finalHeight
If I don't call DoEvents in the loop then the animation is not shown, I only get the final height without a visual feedback along the way. I can call DoEvents from inside my main WinForm project, but can't inside a library. How can I do that, without drowning into the deep threads waters?
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Jan 31, 2012
I show a waiting form (saying "Please wait...") on a different thread when there is long-running code in some forms (for example, during data loading). I show the form like this:
m_PopProcessingThread = New Thread(New ThreadStart(
Sub()
m_PopProcessingForm = New WaitingForm(m_Message)
Application.Run(m_PopProcessingForm)
End Sub))
[Code]...
The stack trace points to the part of code where I hide the form. How could the handle not have been created, when just before the Invoke call, I loop until said handle is created?
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Jan 4, 2010
I have a document with VBA controls in it that I created in MS Word 2003. After migrating to MS Word 2007, I get the message that "Can't exit design mode because control 'lblEmaillist' can not be created".
After reading through the various forums here and on microsoft.com it seems to be a known problem. I looked at these articles but am still having a bit of trouble...
[URL] refers to the same problem in word 2000 but after following the directions I still am getting the problem.
The problem does not occur when I open the document in MS Word 2007 or MS Word 2003. The problem only occurs when I open click on the link from IE.
I've set up the location as a trusted location in Office 2007 settings so that should not be an issue.
The document in question is being saved in the word 97-2003 format due to the fact that some people here have not upgraded to office 2007. I tried saving it as a .docm for office 2007 but the error message still came up.
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Feb 3, 2010
Using a module in my project, I added Drag & Drop functionality to the picture boxes on my form.
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Jul 1, 2011
I'm having a problem with a Web Control that is dynamically created and inserted in my page. I create a couple of LinkButtons, depending on the data of the search that was made, and I'm trying to add an Event Handler to each of the Buttons, so it would filter the result. The controls are initialized properly, but the event is never fired.
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
Controls.Clear()
[code].....
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