Big Panel Visible And Not Visible Based On Selections Made By User
Jan 28, 2009
I've got a panel - that's in a group box. All of this - with lots of other textboxes on labels - is in another panel (the big panel).I make the big panel visible and not visible based on selections made by the user.This small panel - that's in the group box. I cannot seem to make it appear.Even if I leave it VISIBLE at design time - the objects in it will not appear.Is there some kind of nesting problem that I'm not aware of!
If InputBookinglength.SelectedValue.ToString = "2" Then Dim paramstring As New StringBuilder If Session("SelectedDates") IsNot Nothing Then
[Code]....
This code works fine when selecting multiple days in one month. But when you switch to display a different month, the previous months selections are lost. how to persist the selections when the visible month changes.
I have five menu items that i have created as a user control and placed on the master page. Now i want one of the menu items to be visible only for particular user role and not visible for others. Here is what I did. Its not working though.
I'm having an odd problem when making a form visible and not visible and it not continuing to function. Here is what I have happening. I have a main form (frmMain) that is an MDIParent. On this form I have a menu to open a second form (frmCalculate) and populate a listview from Items in the database.
As I click or select items in the listview on frmCalculate the tag is read and data is pulled based on the id stored in that tag and fills in various fields on the form. This works great. However, I also have a context menu attached to the listview that allows me to perform a "what if" scenerio on the items I am calculating. When I select this menu, I hide the frmCalculate and open the frmWhatIf form where I can mess around with values on the item I had hilighted in the listview on frmCalculate. Nothing is pulled from or written back to the database here, all the information is filled in from fields on frmCalculate. It just allows me to look at rising costs and how they will affect my margins.... anyway.
If I then close frmWhatIf, it brings my frmCalculate back by setting its visible propery to true (never closed frmCalculate, just hid it). At this point if I click an item in the listview I get an exception for a null reference. IF however I never hide frmCalculate, I can open and close frmWhatIF without ever having an issue. Why do I lose the functionality to select items just by hiding and unhiding the form? As a test I added two menus to the toolbar on frmMain one called hide and one called show. I then opened frmCalculate with original menu item to populate the listview and selected a few items to test that it was working and then using the hide menu I made the form invisible and the show button to bring it back. This yielded the same exception so without even opening frmWhatIf the problem still occurs.
In my space invaders game, you press start, which creates 15 pictureboxes. When I hit the spacebar, a bullet moves to the top of the screen. What code would allow me to make a picturebox invisible that isn't named yet?
Well im not understanding to much about the panel control. I am not understanding on how to do this panel control put a textbox and button control in it, when the user selects load from Internet, you make the panel control visible, then use the textbox to get the URL from the user and the button to fire the event that makes everything happen
I'm getting some unexpected behavior with panel scrollbars, and was wondering if it is a bug, or simply something that I'm failing to do correctly. Basically, I have a panel with Autoscroll enabled. Then I put some other items inside the panel, and then make the panel smaller, so that the panel's scrollbars appear.
Outside of the panel I have 2 buttons, named "scrollOn" and "scrollOff", which turn the panel's scrollbar's on and off using the "Autoscroll" property (for example the "scrollOff" code I'm using is Panel1.AutoScroll = False ). So after I run the program, I move the panel's scrollbar down a little bit with the mouse (this part is necessary to reproduce the bug). I then click the "scrollOff" button (which should make the scrollbars disappear). But when I do that, the scrollbars are not only still visible, but they "freeze up" (can't move them with the mouse anymore).
I have set the panel on visible as false, so it would not show up when I run the form. I am trying to set the visible as true when I enter my mouse on panel location, but it doesn't show anything....
Private Sub Panel1_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles Panel1.Enter Panel1.Visible = True End Sub
How to set the panel visible as true when I enter my mouse on panel location while the visible are false?
I have a Windows Forms VB.NET application, with a panel that contains a few other controls.I set the panel's AutoScroll property to True, and that seems to appropiately apply the scroll bars when they are needed. The issue is that a user must scroll all the way to the right to access the verticle scroll bar. Is there a way to always show the verticle scrollbar no matter where the user is scrolled horizontally?
But I don't know if i posted this at the right place. I am making 40 textboxes inside a panel. And this textboxes I set it to visible=FALSE. Then I have another textbox named txtNoteam in which once the user will enter a number in this txtbox which is less than or equal to 40, those textboxes will be set to true starting from textbox1 to textbox40 depending on the number entered by the user. Example: user enters 3, then textbox 1 to textbox 3 will be set to visible.
I was successful in doing this except one thing, instead of textbox 1 to textbox 3 will be set to visible, it's the textbox 38 to textbox 40 will be set first. This means it will start from the last textbox to the first textbox instead of from textbox1 to the last textbox.
I need your help on what should I do for this to be able to set it to visible from the 1st textbox to the last textbox or is there any other ways of doing this?
I have a BackgroundWorker and the DoWork event, calls a function called "JustMe", it executes a loop to make visible all the controls on a panel, but does not work vb.net
Private Function JustMe As Boolean For Each ctr As Control In Panel1.Controls ctr.Visible = True Next Return True End Function Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork JustMe() End Sub
I am stumped on this one. I have a panel (pnlKeyPad) that won't change the visible property when I try to set it to True. But when I try to set the Dock Property to DockStyle.Fill it succeeds. I have tried them in different orders, setting the parent property to the splitpanel and nothing seems to fix it. The panel is on a splitpanel that is visible. The panel is set to visible = false by default.
Any ideas of why this panel won't switch to visible when I specifically set it to visible?[code]...
I have a simple treeview, when I click a node I want to be able to make a panel visible when a node is clicked using a simple if then statement and make the other panels associated with the other nodes invisible. From what I read the code should be placed in the afterselect method. Was thinking would be similiar to a list box using selected index or something but can't seem to get it to work.
I have a number of textboxes and labels in a panel which has to scroll in order to view them all. The user is then able to scroll down and click on one of the labels which has a textbox that appears so the user can change the corresponding value in the label. For some reason, if the user has to scroll down at all to any of the labels that are initially out of view, when they click on the label the textbox appears far below as if it was at its initial position and not directly where the label currently is.
In Form1 I have a SplitContainer with Panels.In SplitContainer1.Panel2 i have a Form2 (Inherit) and a GroupBox1.
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When i Start the Application, Form1 Appear with 2 Panels. In SplitContainer1.Panel1 is the Button1 and in SplitContainer1.Panel2 is not visible the GroupBox1.I press the Button1 and nothing happen. Why? How can i make visible the GroupBox1 by Button1?
I have a VB.Net project. The form has a panel and few buttons inside panel... The problem is that the background image of the panel is only visible behind buttons....but not in empty space....The app is running fine on Windows 7 but the problem comes on XP....I have tried "Enable XP Visual Styles" but no luck....When i dock a button to fill all empty space then the background image is visible....but if i remove the button ... background image is not visible....
I have placed several PictureBox Images of different colored dots(which represent lights) on an image of a Christmas Tree. I can make the lights randomly flash using a randomGenerator and a Select case statement. However, the code is very long. There are 67 lights on this tree and the code is 71 pages long. There has to be an easier way to do this. So far I have tried the following with two images of lights just to see if it would work and it does not work:
I want to alter the .visible property of a label based on if a variable is positive or negative (Hiding it for negative values) But I want to do this for lots of labels so If Statements are too bulky.
I tried this:
Label1.visible = CBool(IntVariable1)
But it turns out CBool returns True for ANY value and False for Zero.I'd assumed it would be True for positive values and False for negatives.How can I do it without if statements?I considered Modulo or SquareRoots to somehow convert a negative number into zero, but didn't want to complicate things with imaginary numbers.
I use the same nemespace in both user controls. I create a class in one of them and I want to be able to call it from another class but it is not visible. It is public.I specify full namespace and can not see it. How do I do that?
All I want to make user control visible on button click. I am getting object null typical error on following code. How do I make complete user Control visible or invisible using javascript?
If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:
a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).
b) PreferredHeight does not not appear to give the correct integral of item heights.
Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
After running the following code (which locks the computer), what code must I be applying to see if the user has successfully logged into the computer and that "Lock Screen" I'd so called has disappeared?
Private Declare Function LockWorkStation Lib "user32.dll" () As Long Private Function LockComputer() LockWorkStation() End Function
I will call "LockComputer", after that what do I do to see if the Lock screen so called by this function (after say 2 minutes) has disappeared or is still there asking for the password from the user.
I'm making a program running on background that monitors users button click on a specific program, I need to know where this person is clicking. Is there a way to make a virtual map (not visible to the user) of the window this person is looking at and clicking? I need know where this person is clicking so I can take a specific action and show a result to another monitor output.
I've create a VB2008 app that upon clicking the applications Start button it creates an icon in the taskbar that is visible to the user upon creation, it also shows a balloon tip at the time of creation. This all works great when the program starts but once the balloon tip timeout value has elaped, the icon, in Windows 7, disappears from the visible portion of the taskbar and becomes hidden, which is only visible if the user shows the hidden icons.
My question is this...... In the VB2008 program is there any way to set the behavior of the icon so that it remains visible on the taskbar instead of allowing the icon to become hidden?
The original design of the program was to get an environmental variable, display the value of that variable in the balloontip, hide the form and then check every 10 minutes for a change in that environmental variable. Once the form was hidden the user could see that the program was running by the presence of the icon in the taskbar and if they hovered over the icon it would display the current value of the external variable. Also if the user wanted to return the form to it's full size all they had to do was click on the taskbar icon. With Windows 7 if I hide the form and the icon is not visible in the taskbar because it too is also hiddem this may create a problem for the user as they may not even be aware that Windows 7 hides the icon. So....Is there anyway to insure that the icon remains in the Windows 7 taskbar or is this a case where I need to re-evaluate my program design?
Below is the exception code info. when I try to make form visible for the first time from another form then I get an exception code. something like 'a required variable not set'
I am a new student of Visual Basic. I am using Vis. Studio 2010. Is there some sample VB code that I can gain access to that shows how to test on multiple selections that were selected within a listbox using the "For each" construct? In this scenario, multiple items have been selected but not 100% of them. I need to know how to test on which ones are selected as I examine each one in the list using the "For each" construct.
I am a new to programming, trying to learn vb.net, so I apologize if my questions are very elementary or my terminology is incorrect. I am trying to format a query to an Oracle table based on user-selected radio buttons on a Windows form (i.e. the query will return different elements from the table based on the radio buttons selected). The query results will be placed in a listbox on the form. My thought was to make a Property containing my query like so:
[Code]...
and then I have a sub that feeds this SQL property (containing the query) into an OracleConnection.My problem is that I don't know how to customize that query depending on what radio buttons are selected by the user. Is a Property the best way to go about this, or is there some other way that may be better?
