One Tooltip For Control Array; Not One For Each Control?
Mar 27, 2012
I have an application with as many as 625 Textboxes in a runtime generated control array.I add textboxes one at a time in a subroutine.The application ran with no problems until the parameters required more than 256 textboxes at which point it slowed drastically as textboxes were added. At circa 400 Textboxes it died with an out-of-memory condiiton.
The system has 8GB & a 64Bit version of Windows 7.It looks like the tooltips are eating up memory, causing excessive use of virtual memory from Hard Disk & finally causing out-of-memory.I am now running the application with a label which flashes when the mouse hovers. This uses the Handler for MouseHover.Is it possible to get a single Tooltip to function for all the Controls in an Array? I would prefer this to using the Event Handler.
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Jan 7, 2011
control to display dynamic fields
the database table contains
ID --> Autonumber
Title --> text
[code].....
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May 21, 2012
I have searched the web and not found a good resolution for this problem in vb.net.
When you change a color in the controls property it does not respond with the color changes.
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Nov 26, 2009
I need to extend the functionality of the ToolTip control...Problem: I need to show some introductionary instructions to my users the first time they see a new form based feature in my app. Something along the lines of: '...Welcome to the blah, blah, blah feature. To do this, click that, mouse here, press that so on and so forth...'
Then I want a 'Don't show this again' check box somewhere near the bottom so the 'welcome screen' can be supressed. Currently I'm thinking of loading an app wide form (Public Dim frmMyToolTip as frmToolTip) and using it's .TopMost property to ensure that when I show it, it appears over my modal form (I can Hide/Show at will.) Also without a caption or border, my users can't move it.
As it will be displayed on top of a Modal form, I need a Background worker component to run a timer which will hide the form after a set period. I can store the state of the CheckBox to stop the form from showing next time if user does not require it.
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Mar 1, 2010
I have this flexgrid which shows a different tooltip for every cell it contains. Now I would like to see this exact same tooltip for every cell when I put the flexgrid on enabled = false but I can't find a way to do this.
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Dec 22, 2011
I am upgrading user control from vb6 to vb.net.In the vb6 application I am loading 3000 labels using a label control array.In vb.net I am doing same but it's taking too much time to load.In vb6 it's taking 1-2 seconds, but in vb.net it's taking 30-40 seconds for same work. Why does it take too much time in vb.net for same work?Code is given below, here Led is the label control array.
For l = 1 To 3000
Led.Load(ledCounter)
ColLed.Add(Led(ledCounter))
[code]....
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Aug 7, 2011
I would like to set the tool tip of a button on a ToolTip control , but I would like it to do it by code during run time , not during design time . Is it possible ?
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Jun 21, 2010
The situation is like this, says:I have textbox1 to textbox20 to show real-time reading, then textbox21 to textbox40 for other purpose. So textbox1-20 can be manage in group through: For index As Integer = 1 To 20 Form1.Controls("Textbox" & index).BackColor = SystemColors.Window Next The problem is, after some time i feel i like to change the order or add/delete few textbox, then i need to change the control name one by one by entering the name by hands(says if i add a text box then its name will be textbox41, then then For loop wont work, Or I deicided to delete the textbox15, forloop wont work either, then i need to rename them manually.)
Question: If there a ways that create a control array in VB 2008 express edition? which can set the name of Textbox1-20 to ButtonGroup then refer to them by says Buttongroup(1) for textbox1? (which means set a group of control in one name)
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Dec 16, 2010
I working on a VB.NET project to manipulate a VB6 form using COM Interop. Some of the controls on my VB6 form are indexed and some not, so calling ctl.Index fails on those that have no index. Is there a way to work out if a control is indexed?
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May 8, 2011
I have an array of picture boxes as so:
Dim pieces(500) As PictureBox
pieces(1) = New PictureBox
With pieces(1)
[Code].....
The program does not crash or anything, but the picturebox is no where to be seen on the form. How to I make this work correctly?
And is 'Control Array' the correct term for this? or something else?
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Dec 26, 2009
I populated a form with several progress bars and added a function to handle a click event via AddHandler. The event fires and I have been able to do things with the control using the passed object 'sender', but I can't for the life of me determine what the index of the control is in the array.
Why is that important to me? Because I want to click the control, have a container of textboxes become visible, and populate them with data from the reference in my database based on what control was clicked, and update that data as needed. Making the container of textboxes visible, and even moving it based on the location of the clicked control in the array are all done and working fine. I just can't seem to get the index of the control.
I need to know what entry (progress bar in this case) was clicked. In the function, I can even do things with a select progress bar using something like pb(x).value = some integer, but I'm trying to find out what 'X" is when the click event fires.
Here are some code snippets...
'Populate page 0 of tab control with progress bars
'TimerCount(int) = number of timer instances active in the database
For x = 0 To TimerCount
[code]....
EDIT: I figured out a work around using the 'name' property, but I would still like to know if what I asked about an index is possible.
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Dec 29, 2010
Here's my situation: I have a control with motion graphics (for the sake of simplicity, a 'video player' control) in my project. Think of a PictureBox with constantly-changing images. In front of this will sit a second control (such as a second PictureBox of the same dimensions). The topmost PictureBox will be drawn to in its Paint event.
I need to draw very few elements, and the bottom control is updated much more frequently than I need for this drawing. So these elements are drawn to the topmost control. Think of a news broadcast, where they have live video in the background, with a news channel logo, news ticker, and sometimes gradient visible in front.
I'm trying to create that 'foreground' control, and the closest I believe I have gotten so far is the following:
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
[CODE]...
The 'Opacity' property in the code above is a sort of "scaling factor." The image drawn to the top control may, in different parts of the image, have any alpha value from full transparent to a full 255. This 'Opacity' property is applied to the entire image being drawn, scaling the alpha values of each pixel.
See the following pictures for description:
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Mar 25, 2011
I want to set control position relative to other control so when i make one control hide then other control move up like this.
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Nov 22, 2009
I have a modified button control with a string array in it. I am having trouble sending the string array to the form with the modified button on it. Anyone know what i can do? The form uses a arrayList to hold the buttons since they are made at runtime.
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Aug 19, 2009
how can we set control array in vb.net
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Aug 16, 2009
I was just wondering if there is and alternative for control arrays in .net as these were quite handy in vb6?
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Mar 11, 2012
It was so simple in VB6 but I don't know how to approach it in VB2010. I've looked the internet but each site seems to have a different solution and masses of code for something that could be done in a few lines in VB6.Here is the code I want to use. How do I go about creating a control array of 100 picture boxes pic(1) up to pic(100)?
Code:
For y = 0 To 9
For x = 1 To 10
tempObject = (Mid(StrRow(y), x, 1))
[code]....
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Jun 18, 2011
How to create four PictureBoxes array at design time e.g. pic(0), pic(1), pic(2), pic(3). In VB6 set the Index property of PictureBox but VB.NET hasn't this property.
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Apr 3, 2011
[code]how to detect if what button did i clicked? i just want to disable the button i clicked or change it properties..
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Jul 9, 2010
In one of the vb6 form, we have a parent - child relation controls. The parent side consists of few radio buttons and the child side contains the control array elements. On click of each radio button, the control array elements are refreshed and populated with data related to the option selected. In the existing application, they have made use of "Load" and "Unload" methods for control array elements. The control array elements are created in the design time(which consists of labels, text boxes and button) and are all placed within a panel, which in turn is placed within 2 group boxes.But the problem comes when I have to unload these array elements.
The control array is created in the design time and the loading of each of these controls is based on certain conditions which is decided during run time.
1. Is there any alternatives to show/clear the control array elements other than control.Load(index)/control.Unload(index)?
2. Is there any way to check whether the controls are loaded or not.
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May 28, 2010
Moving some VB6 code to .Net
The VB6 codes makes use of an Array of textboxes and lots of the code manipulates the textboxes selecting the target textbox via the index. This is very good because a small amount of code can reference a large number of textboxes simply by changing the index. To do the same in dot net I'd need a load of code for each box or I'd need to create the boxes at runtime.
But.
I was reading somewhere that it's possible to kind of simulate similar behavior by creating a bunch of text boxes at design time with the usual names names like TextBox1, TextBox2 etc and then referring to them in code like this:-
Controls("TextBox" + n)
Is that possible ? What would be the syntax ?
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Mar 5, 2011
I have to make a game "connect four". I'm having some trouble with the 2-dimensional Array that needs to be created in order to play the game. Firstly there is a function which makes rectangle shaped pictureboxes into circleshaped boxes. Secondly there is a method which is supposed to create a 2-dimensional array with circle's but i can't get it to work. When I run it it only gives me 1 circle at the location which i have given it. I don't know how to get it to repeat. Here's the code.
[Code]...
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Jun 21, 2010
I create a dynamic number of PictureBox controls. I keep them inside a List. What I want now is to make them clickable: same event handler for all (opening of the image source file) with a parameter. The question is: how can I do it in practice? How I set the handler Sub for every picbox?
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May 8, 2010
I have some experience with VB6 and it was easy to do a control array for radio buttons such that btnSMP(0) and btnSMP(1) and btnSMP(2) were together and if user clicked on btnSMP(1) it was shown with the blck dot on it as selected. If one then changed mind (which seems to be a very common thing) then if user clicked on btnSMP(0) then it was selected and the other one was not.That is not possible in Visual Studio 2008 for what ever reason the higher ups decided. I have read a number of articles now in MSDN about how to duplicate that feature in VB.net code but it seems to be a lot of work and they add in many features I do not have a need of
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Apr 22, 2011
Why would the controls not be in the order that they were added. I am adding the controls below, the first one to be added is a label, would expect to see it at the top,but it appears below the other linklabels[code]...
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Oct 13, 2011
Migrating from VB6, a control array of flexgrid objects. Obviously flexgrid is not supported by VB.NET, so DataGridView objects have to be used instead. I tried this alternative to placing them in a list.
I have two DataGridView objects which share a lot of code as well as event handlers. They are named D1 and D2 and many properties, such as column headeders etc., are set at define time. The control array is simulated by passing the "index" and selected grid as parameters in subroutines. For example, the routine to fill the grids, is as follows.
[Code]...
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Feb 4, 2012
I have some different controls (PictureBox, Label,Button...) that are created by code. The set number of these controls isnot fixed. So let me set this number ton. And I have the following lines of code to create some of these controls.
For i5 As Integer = 0 To n
dBoxArray(i5) = New PictureBox 'PictureBox
Panel1.Controls.Add(dBoxArray(i5))
[code].....
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Mar 6, 2011
I'm trying to create a control array in VB2005. As I've said in other questions, I've been working in VB5 for a good while but I'm new to VB2005. I know how to set the array up in VB5 but it doesn't work in VB2005. I tried some code that someone told me about, but it's not working. I have several books on programming VB2005 but
Here's my code as it stands now:
Public
Class frmMain
Public lblFasting(30)
[Code].....
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Mar 27, 2010
Below is my code. I don't know why the pictures are not zoomed in when the mouse enters the panels.
Public Class Form1
Dim Panelarray(50) As Panel
Dim Labelarray(50) As Label
[Code].....
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Apr 20, 2008
i need to loop through 9 Buttons in a Tic Tac Toe program to reset my O&X's, rather than setting each button.text individually, how can i loop through these?
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