I am just getting back into VB.NET, and I need to ask a question. I am doing a project for a class which requires iterating through 360 items in a scrollable control that will pause every so often. I am thinking I might use either a ListView or GridView, but I am not sure if this is the right way to go or if I need to use a different control all together.
View 3 Replies
How can I make a form scrollable?
View 2 RepliesI have a number of idential repeaters, and I need to iterate through all of the items. I currently have:
For Each item In rpt1.Items
.do some stuff
Next[code]....
Is there a simple way to reduce this to a single For Each ... Next loop?
Edit: There are a number of local vars involved in "do some stuff", which is why I can't just pass the item into a function - the call would have to include about 8 ByRef params.
Can I safely modify -I mean: remove and re-add on a different index position- any item that I iterate over using a For Each loop in VB? We are talking about the VB Microsoft.VisualBasic.Collection class.And if yes: Is this by design, or an implementational detail, that I am building upon then?
View 3 RepliesIs there a way to enable a default pan behavior in the .Net scrollable control when you press down on the center scroll button, or Is that a behavior you have to implement yourself? You know like in some programs where you press down on the center button and it give you an arrow cursor that pans whichever direction you move the mouse?
View 1 Repliesi want to write text on trasparent scrollable control.I try to use label (that accepts trasparent backcolor), but it doesn't have scrollbarIf i use textbox, it has a scrollbar , but not trasparen backcolor.So what control can i use? There something to do this?
View 6 Repliesi have created a windows form that has some labels, lines , buttons and i have enabled autoscroll property to true. i am having trouble with relocating and resizing of the controls with resizing of form and change in screen resolution.i have used a code liike dim tmpctrl as control
for each tmpctrl in me.controls
tmpctrl.setbounds((tmpctrls.location.x/X)*me.width, (tmpctrls.location.y/Y)*me.height, (tmpctrls.size.width/X)*me.width,(tmpctrls.size.height/Y*me.height))
next
now as my form is a scrollable form.and the total window portion with respect to which i want to resize n relocate. m having trouble in choosing X , Y in the above code.
I'm having a tough time implementing my own custom control that makes use of scrollbars if needed. The whole control itself would not be scrollable and only some portions of the custom paining would be scrolled, so the AutoScrolling capabilities of ScrollableControl would not work for me. But, I'm having an extremely difficult time in implementing a professional looking solution, where as the control gets resized, the scrollbars resize proportionality to be able to show a specified area.
View 1 RepliesHow do I go about looping through all the controls within a container, and all the controls in the container of a containing control, and so on.
[code]...
The following only retrieves -Panel and none of the other controlsFor Each cntrl As Control In Me.Controls Next How can I retrieve them all in a For Each loop without an If/Then for every level in the stack?
[code]...
This is so far the best method I found of doing this.
I've got a panel (pnlExpenses) with several labels and textboxes on it. I want the program to go through the dollar amounts entered in the textboxes and put the subtotal in a class level variable (dcSumOfExpenses). However, when the debugger passes through this Sub, objControl always shows a value of Nothing, and the Count of pnlExpenses.Controls always shows a zero. What is my code missing? The panel was added to a tabpage at design time, and the labels and textboxes were laid on top of the panel. Do I need to do something more to establish the panel's controls as a collection?
Private Sub SumExpenses()
dcSumOfExpenses = 0
Dim objControl As Control
[Code]......
i have a database that stores clients, categories and sub categories, what i am doing is creating a form that programatically creates tab pages on a tab control for each category and a checked list box with each sub category as an item. so that when the form is displayed it only shows categories and sub categories relevent to the client.
Dim tabpage as Integer = 0
ab.Open("select distinct category from etc etc", connectionstring)
While Not ab.EOF
TabControl1.TabPages.Add(ab.Fields("category").Value)
[Code].....
Imports System.Collections.GenericI
mports System.Net
Imports System.IO
Public Class Form2
'Dim filename As String
Public ftpSettings As FtpClient
[Code]...
I don't know what's wrong, i can only move the 1st item but the second and so on doesn't make any changes. It remains in a listbox.
Certain areas of my tab control have become what seams to be transparent using Visual Basic Express 2010. I can rearange items in the tab, except in certain blackhole like areas. When I move a item within the blackhole area or move a item to the blackhole area it disapears to another tab. I can move items out of the blackhole region and they sit where I put them.
View 2 RepliesWe have an application that has a main form with a map on it. Right now the paradigm is to have forms that are displayed using menu items to display information to the user. Most of these forms are modal forms, but a couple are non-modal forms that interact with the map. For some of the forms, it really would make for a better user experience if we could dock them in the main form of the app and allow the user to see both the form and the map. For instance. We could have a list of map features in a docked window, and select one of the items on the list and have the map zoom to that feature. Or do the reverse: let the users select a map item and have a docked window that shows details of the feature. Sounds great, but I wonder about what sort of gotchas we may encounter. In particular, what if we have two windows docked at the same time? Could we get tangled up in our event code?
View 2 RepliesPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Size = New System.Drawing.Size(830, 1200)
' MsgBox(Err.Description & " " & Me.Size.Height.ToString)
MsgBox(Me.VerticalScroll.Value.ToString)
[Code]...
I have a form in VB which is scrollable (using autoscroll) and when I currently click 'print', it only prints what I can see; it takes a screenshot of the viewable information.
Here's my code:
Private Sub btnPrint_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPrint.Click
Dim settings As New System.Drawing.Printing.PrinterSettings
sPrintForm.PrinterSettings = settings
settings.DefaultPageSettings.Landscape = True
[Code] .....
How to print the whole of the page, including the areas that can't be seen? I've already tried using:
PrintForm.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable)
And that didn't work.
I have a form in VB which is scrollable (using autoscroll) and when I currently click 'print', it only prints what I can see; it takes a screenshot of the viewable information.[code]...
View 8 RepliesI want to print the entire contents of a scrollable panel in VB 2008 express. I am an intermediate learner but still can't fathom many of the guidelines given. There is nothing to bridge the gulf between "Hello World" level and more sophisticated (but not cosmic) tasks.
[Code]....
I would like to build a form that has multiple picture boxes that a user can browse through and click on each one to select multiple items. The pictures will all be pulled from a single directory. After they have selected the items, they will click a button that will change the names on all the selected pictures. I know how to change the names, but I need some assistance with the picture box and loading the file names into a list or array. Not sure what it would be called. I am not even sure really if I would use a picture box or some other form item.
View 4 Repliesi am working on Scrollable form, when i am trying to print this form with PrintForm object its printing only the showing part not all the form this the code which am using.Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Me.PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable) End Sub
View 3 RepliesI need to increase the size of my form and allow it to be scrollable vertically but I cant set my size any larger then 780 I have auto scroll set to true and from what I thought I understood I should be able to make the form longer and it would be scrollable Can someone tell me what I am doing wrong ?
View 15 RepliesI'm building a break-timer application. The objective of this, in VB, is to have an application that lets me create a timer dynamically (maybe through a button click) that counts up (or down if you wanna call it that) to a preset point, then makes beeping noises like an alarm. This is due to my desire to no longer be late to and from my breaks at work.
I was able to create a super simple one that just had three timers that I could tick off, but I find myself using them for way more than just three uses. For example, I start one when I get in to count to the point when I need to punch in my timecard (our system is annoying about being exactly on time) then I start one for when my first break starts, then one for my break, then one for after my break but before my lunch, etc.
So, I wanted to have a program that does the following:Has a scrollbar-capable box that can scroll up and down.Each line of the Scrollbar-capable box has one of my custom controls in it (a wide, thin bar containing a field for how long to go, a start button, a display of time elapsed in seconds, and a stop button).
I can just click a button to create each control one line at a time.Now, I know HOW I can create these, but I want to know:Is there an existing type of box that would let me do something like this? Has someone already written this? Or am I going to be creating a COMPLETELY custom control that will be fairly painful to figure out? In which case, is this even doable, or should I just try something else?
I want to add some sort of scrollable credits text to my application about form how can I do that using a label? I want to make it look like the one Kaspersky has for example included example below
View 6 Repliesim trying to make the form Dockable in the desktop on the righ side. I mean i can do this i can stick the form on the side but all other application are not seen in the full window coz my appz is still on the top and others appz under it.Size of the form is 200x1024, it is like administration stripe.So i would like to make other Winows in the system ended on the edge of my application. Is it even possible in VB?There is other way i guess to use some of the scroll(collapsible,expader) windows to the side of the desktop would do it as well but i dont know how to ?
View 1 RepliesNow i came with another problem.I want to print a Panel Object with scroll bars (AutoScroll = True).
I have searched over the vbforums.com and i have googled for almost 2 days and i did not find any solution for this...
I am an experienced programmer but mainly in 4GLs and assembly. Relatively new to VB programming, especially GUI applications. On a form I need to create an area that will be used to display *extremely* large TIFF images. typical image size would be 2000 pixels by 100,000 pixels. Typically I will NOT want to display the entire image at once, so the area will need to have scroll bars and/or other methods to scroll/pan around the image.
I have read about and tinkered with the bitmap and picturebox objects, including some threads about several different ways to implement scrollbars. However, I see that the picturebox size is limited to 32K pixels in both dimensions. I suppose that I might be able to copy various portions of the bitmap to the picturebox depending on scroll position, but that seems potentially quite slow and cumbersome. Can an expert developer who is experienced with these types of issues regarding the following:
1. Can bitmap objects be used effectively with TIFF images of the size I am working with?
2. an approach that should produce reasonable scrolling performance for these extremely large images without excessive coding effort?
3. For an image that exceeds the picturebox size when displayed at 1:1 scale, is the picturebox capable of displaying a reduced size version of such an image without lots of code, and if so, how?
4. Many (most?) graphics display objects count on all of their display data being stored in memory rather than on disk. Would that be true of a TIFF image loaded into a bitmap object and displayed via a picturebox? If so, the amount of RAM required in order to buffer the entire image in memory could be a potential problem for images of this size. Is there an advisable way to have the picturebox or other display object only load portions of the image into memory on an as needed basis, and purge them once they are no longer required? Are there any built in objects/methods/properties or is there any sample code to show how to do this?
Is it possible to make a multi-line text box still scrollable while it's disabled? The closest I can achieve this is to set the text box's ReadOnly property to false, which will gray out the text box, and still scrollable, but the text in the box remains black instead of being gray. Changing the forecolor of the text box does not have any effect. The color of the text changes back to black when I set ReadOnly to true. I want to be able to mimic the disabled text box visually.
View 4 RepliesWhen I call PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable)Only the visible portion of the screen is printed.What else do I need to dobill
View 5 RepliesI'm trying to make a label control transparent over a Panel control.However by setting the background colour of the label to Transparent, it actually sees right through to the form itself, not the panel as intended.
As an example we use a panel with a background as white, we make the label transparent, however it gets the form�s colour as blue.However, we are using a custom panel control and need the label to be transparent over the panel and not see the forms background.
i have a splitter control on tab 2, a grid and a scheduler control on tab 3..looks fine...i save it....close the form...reopen the form, and the controls are all resized and moved around on me....and not for the better.
wierd thing is that when i run the app, the controls are placed properly, but design time is totally f&*ked up.I know this one isn't me. is it the tab control? should i just do toggle buttons at the top and show/hide my own panels? this is just too freaky to deal with. is there an easy work around for this?
