Control Added On The Fly Is Added To The Wrong Location Of An Auto-scroll Panel?
Jun 21, 2010
I have a program that adds controls on the fly to an auto-scroll panel. When the panel is scrolled (viewing the bottom of the panel for example) and a control is added, it looks like it is added assuming the top left corner of the panel is still at 0,0 when in fact it may be 0,500. To see what I am talking about, create an empty "Windows Forms Application" project and insert the below code into it.
Friend WithEvents Panel1 As System.Windows.Forms.Panel
Friend WithEvents btnAdd As System.Windows.Forms.Button
Dim ButtonCount As Integer
[code]......
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Nov 21, 2011
I have a problem when I add a button dynamically to a panel with scroll bars.
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Dec 2, 2009
I've dynamically added 20 pictureboxes to a panel and would like to see the panel scroll when I use the mouse wheel. To implement this I have tried to set the autoscroll to true on the panel control. Here is the code.
For i As Integer = 1 To 20:
Dim b As New PictureBox()
b.Image = Nothing
[Code]....
It works for "button" control, but not for the "picturebox" or "label" controls?
How can I implementthe scrolling affect using 'mousewheel'?
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Jun 12, 2011
I am loading several command buttons into it (one in each grid box). I have the panel set to autoscroll. When TableLayoutPanel is set to AddColumns, all works well. However, I dont want horizontal scroll, I want vertical. When I set TableLayoutPanel to AddRows, a vertical scrollbar will not appear.
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Apr 18, 2012
how to make a datagrid auto scroll to the bottom when data is added. Does anyone know how to scroll a datagrid to the bottom when data is added??
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Jun 9, 2011
I am using VB.NET in VS10. After I add items to a list box I'd like it to scroll down so that the most recent items are visible. I tried this with no luck:
StatusListBox.SelectedItem = StatusListBox.Items.Count - 1
How to make the box always display the most recently added items?
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Jun 10, 2009
i have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
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Dec 19, 2009
Is there a way to get and set the location of the scroll bars in a panel?
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Feb 17, 2009
i put Picturebox in the Panel control i set Autoscroll Propertu of Panel set to True i maximize the size of PictureBox OnClick Event of PictureBox
PictureBox1.Size =
New Size(PictureBox1.Width + 50, PictureBox1.Height + 50)i want to Center and Clicked Location mean adjust the scroll of Panel according to the Clicked Location like Windows Picture and Fax Viewer?
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Apr 13, 2011
i put Picturebox in the Panel control i set Autoscroll Propertu of Panel set to True i maximize the size of PictureBox OnClick Event of PictureBox
PictureBox1.Size =
New Size(PictureBox1.Width + 50, PictureBox1.Height + 50)i want to Center and Clicked Location mean adjust the scroll of Panel according to the Clicked Location like Windows Picture and Fax Viewer?
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Jul 14, 2009
I am using Visual Studio 2005 (Visual Basic) and MS Access 2003 I am trying to build an application in the lines of the book "Doing Objects in Visual Basic 2005" by Deborah Kurata. So, I have a Data Access Layer (DAL) Class Library that is separated from the business logic layer (business objects) Class Library. I try to add a new business object such as a "Customer" to the Access Database, where the "Customer" table has a PrimaryKey "CustomerID" which is an AutoNumber field. I am successful in writing the values to the database, but I can't figure out how to know the "CustomerID" of a newly added "Customer" so I can populate the business object with the respective values.
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Oct 6, 2011
I have a datatable property called prpParametersTable in a class called clsBatch. I have a procedure that sets a datatable variable called dtP equal to prpParametersTable at the beginning of the procedure. I then add three new columns to dtP.Here is my problem. When I add the three new columns to dtP my original table prpParametersTable also gets those columns added to it, why? I only want to add the three columns to dtP and not prpParametersTable. How can I do that?
Private Function prvfnc_InsertBatchParameters(ByRef cnn As SqlConnection, ByRef trans As SqlTransaction) As String
' set new columns that have BatchID, Insert DateTime, and UserID for the SQLBulkCopy method below
Dim clm As DataColumn
Dim dtP As DataTable = clsBatch.prpParametersTable
[code]....
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Nov 22, 2009
I am trying to create a custom control using vb.net.I have added a image to the user control and the problem I am having is that when I resize the image, the image seems to move as well.I want to be able to resize the user control height without moving the image on the user control.
everytime I resize the user control, it seems to move the image on it as well.Is there a way of leaving the image where it is without moving it as the user control moves?
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Mar 4, 2010
I am using Vb.net 3.5, An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in System.Windows.Forms.dll
Additional information: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
This exception is coming when control is trying to added into the page i.e Me.Controls.Add(CntrlName). I have registered.Then also i am getting error.Please help me.Its urgent.
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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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May 13, 2011
Okay, so I have some problems with dynamically added pictureboxes. This is the code I have now. When I click on one of the imageboxes, I get teh following error: Index was outside the bounds of the array.
[Code]...
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Jun 13, 2011
I've created a new tabpage and also added a richtextbox to it:
Private Sub AddTab(ByVal ctrl As TabControl, _
ByVal text As String)
If Me.InvokeRequired Then
[Code].....
I know the name is rigth cause I have printed the name in the create method and I have printed the name string in the code where I try to access it.
So by the looks of it it seems .Item() is not the right way to access the control.
So how to access to dynamically created control?
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Apr 22, 2010
I am using a .net program. My program is used by few people and it at times downloads updates automatically.Recently I have added a COM control (ocx) in my .net program. Now when I run the program (with ocx in the folder) it gives an error. When I registered the ocx thru regsvr32, it worked fine. So now my program has to register the ocx. Is there any other way to do that rather than using regsvr32. The reason is the regsvr thing will work fine in Win Xp systems but in Vista/Windows 7, which has higher security, I dont know if regsvr will work ok or give an error or will run in elevated more.What should I do ? Should I stick with regsvr32 for all OS or is there an alternative.
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Sep 9, 2009
I've been working on a project lately, where the user can click on an item in a listbox and then get a picture in the PictureBox1. My problem is that when I added a tab control so that I could have several pages with different listboxes and pictureboxes, it stopped working! When I click on an item in ListBox1, the picture doesn't show up in PictureBox1. Why did the tab control ruin everything?
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Feb 20, 2009
I have two FlowLayoutPanels in a Form. The first read images from a DIR and expose them generating so many PictureBoxes are necessary. The user can drag an image and drop into the second Panel. All works fine. Now the problem is how can I know the name of the image contained in the PictureBox in the dropped Panel so that I can save it? I tried to recover in a ListBox the name of the images during the population of the first Panel but I don�t know witch may be the reference with the dropped PictureBox.
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Jan 19, 2011
how to add dynamic control to dynamically added picturebox?
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Jan 3, 2010
How do I add an event Handler to a control, for example a textbox, to handle any keypress event?cause I want this textbox(which is added in program runtime) to only accept any convert any small letter to Upper case.
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Sep 30, 2009
I've created a custom control that I insert into my window with the following code
Code:
<controls:ListExpander Text="Class Diagrams"></controls:ListExpander>
The control in question contains several subcontrols, among others, a list. How can create the setup, so I can specify items that should be added to the list?
Code:
<controls:ListExpander Text="Class Diagrams">
<SomeItem>data<SomeItem>
<SomeItem>data<SomeItem>
<SomeItem>data<SomeItem>
<SomeItem>data<SomeItem>
</controls:ListExpander>
In which case the SomeItem objects should be added to the list in the ListExpander:
Code:
<ListBox Name="lstItems" Background="LightGray">
<ListBox.Items>
// Items should go here
</ListBox.Items>
</ListBox>
I'm quite new to WPF, but I suppose it's something along the lines of creating a dependency collection on ListExpander that takes object of the type SomeItem? I simply want to be able to give the control a few arguments which it can translate into items in the listbox contained within the the control.
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Nov 19, 2010
I'm adding multiple combobox controls to a form dynamically, but am having a problem with one of the event handlers. The first event handler I've added (for the Leave event) fires, but the second (for the TextChanged event) does not. I've tried reversing the order when adding the handlers and I get the same results (TextChanged does not fire). Here's a code snippet for adding the controls, and the code for the events. I've added a breakpoint while testing to verify - but it never hits the code.
Dim cbo As New ComboBox
cbo.Name = "cbo" & fldName
cbo.Tag = fldName.ToUpper
cbo.Top = rowtop
cbo.TabIndex = tabOrder
cbo.DropDownStyle = ComboBoxStyle.DropDown
[Code] .....
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Sep 15, 2011
I am trying to create a program, where the user click a button and this will add a custom control and then drag and drop them on the form.
What I want to be able to do is add multiple controls (by clicking this button) and for them all to have the same events. So basically they can add as many as they like of this control and then click on it and drag it anywhere.I know in vb6 there was the use of the control index but I am not sure how to do this in Visual Studio 2005?
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Sep 26, 2011
At some point in the past, I have added a TabControl1 to my Form in design, now I can't find. I need to view it so I can make some changes. I have looked in the 'Document Outline' and is not there as well. However, the control must be somewhere because it works fine when I run the program.
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Oct 3, 2011
I need to know what files and folders must definitely be added to source control, and what files/folders can be left out.
I know I can leave out bin/ and obj/, along with the .suo file since it's user-specific, but what about the rest of the tree?
FWIW, here's a one form + one module project:
Directory of C:ProjectsMyAppWindowsApplication1
03/10/2011 15:04 3.040 Form1.Designer.vb
03/10/2011 15:04 5.814 Form1.resx
[Code].....
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Nov 1, 2011
I am trying to control the horizontal scroll of a panel box in vb.net. The problem is that I can only seem to move it just a little bit using the following code:
Private Sub HScrollBar1_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ScrollEventArgs) Handles HScrollBar1.Scroll
panSS.HorizontalScroll.Value = HScrollBar1.Value
End Sub
[Code].....
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Feb 8, 2011
I have created a User Control in VB 2005 that adds other controls dynamically. This is a fairly simple test project, with checkboxes added to the control at run-time. Here's the user control:
Public
Class UserControl1
Public x
[Code]......
Then I built the test control and tried to added it to the Toolbox. When I did this--i.e., browsed to the dll and double-clicked it, I got the errror message:
"There are no components in ... that can be placed in the toolbox."
Is it even possible to add a User Control to the Toolbox without compile-time components?
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Apr 10, 2011
I do a lot of programming in VS 2010 on my Windows XP Pro PC. Recently I tried testing my software on a Windows 7 Home PC. For some reason, all of the controls on my forms are slightly misplaced. I also get a bunch of unhandled exceptions I don't get on my pc. For example, one exception said it couldn't access a registry key. Another said it couldn't find the part of a path (it didnt specify which path). What's up? Why is it doing this? My Win XP PC tricks me into thinking my apps are bug free. Guess not.
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