Suppose that one has a panel an inside it there are many buttons with Dock=Top. The button would tend to be stacked on top of the panel. How can I get a reference for each button from top to bottom? The button would be created in a random order, so I don't think that using the index of each button in the Controls collection of the Panel would suffix.
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I have created a usercontrol that contains two rectangle shapes to create a unique button effect and a rounded-corner rectangle shape serving as a border to provide a look similar to a group box. It also contains two labels, one for use with a Text property of the control and the other to indicate the status of expansion of the control. The control is designed to collapse itself when the "button" is clicked leaving only the "button" visible. Clicking it again toggles this affect. I've dubbed it an ExpansionBar. It is also designed to be a container control so that I can add controls to it and allow these to disappear when the bottom portion collapses. This seems to work great! The problem is that the controls contained in this usercontrol cannot be accessed during runtime. In other words, I can add a checkbox to it and it will disappear correctly when the control collapses, but I can't select the checkbox to check it... same thing with any other controls, you can see, but can't touch.
View 2 RepliesI'm fairly new to VB.NET and I'm currently playing around with user controls, figuring out good programming practices. As far as I understand, to create and use a UserControl, I need to create a project with the UserControl in it, then build the project and use that DLL (add it to Toolbox or otherwise).My question is this: Is there a way a have a project (a Form with a bunch of things on it) that contains a UserControl written in a *.vb file inside that same Project? If you do that, the DLL (in my case) never gets produced, possibly because the UserControl is never used and building it is simply omitted. Is it perhaps a bad practice to do that altogether? It simply makes sense to me to keep a UserControl as a part of the Project that uniquely uses it. Is there a reason not to do that?
View 1 RepliesI'm using a TabCotrol in my project , and I want to load as many tabs pages as I need with a PDF control within each tab page so I used this code :
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim NewAdobePage As New AxAcroPDFLib.AxAcroPDF
Dim tb As New TabPage
[CODE]...
And now I want to use OpenFileDialog control to load PDF files into any of the already opened AxAcroPDF controls , How ?
I'm working on a winform which contains several controls like textboxes, radio buttons, datagridviews... All of these controls have been added to a main group box called gbDataEntry. My problem is when the user is seeing the form, I set gbDataEntry.Enabled = False but I want to enable some controls like DataGridviews so the user can scroll them. After disabling gbDataGridview I set DataGridView1.Enabled = True but it seems that the datagridview does not respond to this line. Why?
View 1 Repliesat some points, I need to call the same method on those controls (ex. user presses the clear button on the big control, I want to call the clear f(x) on each of the controls)I thought to toss the controls in a collection, and then be able to handle them something like this:
nextturns out, and I should have realized, methods and properties of controls are not exposed when treated this way. The only thing that can be seen is the stuff that the base class (control, I guess) has.
I created a simple custom controlled Panel for double buffering. When I use the control in my toolbox it works just fine, but when I attempt to add controls inside the panel those controls aren't staying when I move the panel around. My custom panel isn't acting as the controls' parent. I verified this by looking in the designer code.
I tested a standard panel on the same form and it works perfectly normal - as I drag the parent Panel the interior controls move along with it. It is only my custom Panel which doesn't seem to detect when another control is placed within it.
Here is my constructor
Public Class DBPanel
Inherits System.Windows.Forms.PictureBox
Public Sub New()
[Code].....
I went and created a tab containing a good amount of controls, most of which are contained within what I'll just call the top-level group box. Now I decide I'd like the text of the top-level group box to be bold, but nothing else. When I set the top-level group box's font to bold, however, all of the controls contained within it become bolded as well, which is what I don't want. I can set each individual control's bold property to false, but it seems like there should be an easier way to do this.
View 2 RepliesI dynamically add picture boxes to a vb.net form. However, when I add the new picture box, it is always under/below/behind the picture boxes that I previously created. Is it possible to change it so that the newly created picture box would always be in front of the others?
View 2 RepliesThis is part of the last coding that codeorder helped me with. I didn't include this in the last post because I thought this was something that I was going to be able to do. Unfortunately, it is not working properly. In addition to the controls being removed, the control rows after the removed row should be changed so it's still in sequential order. Private Sub PictureBoxRemove_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Dim RowRemove As String = CType(sender, PictureBox).Name.Replace("PictureBoxRemove", "")
[Code]...
I have a bunch of buttons on a form and when the person presses TAB I want the focus of the controls move in a specific order.
View 3 RepliesMy form contains a datagrid and a checked listbox. The listbox is populated on the form_load event. There's a function called when the datagrid's SelectionChanged event is triggered that modifies the checkmarks in the listbox. It all works fine when I manually click on any item in the datagrid.
However, the very first time the form runs, the checkmarks are not affected, even though the first item in the datagrid appears selected. I discovered that this is because the actual listbox is not yet populated on the form at the time the very first SelectionChanged event is triggered. So when the function tries setting the checkboxes, it doesn't get anywhere, since it doesn't see any items in the listbox.
Somehow the datagrid is getting populated, even before the form_load event is triggered. I need the listbox to be populated before the datagrid is populated, but I have no idea how to control this.
I am working on an application that requires buttons and links to be added during run time, it's a bit like a flow chart. The buttons are used to display information similar to a multi line text box, but I also use the click, double click and mouse events for these buttons. The links are drawn as label controls. My problem is that I want to control the format order of these controls with the buttons always being on the top layer and the labels one layer back so that when labels are added they aways pass behind the buttons. If this was done at design time it is very easy to use the menu Format > Order to get overlapping controls displayed the way I want. But, the controls placed on the form at run time do not have a Format or Order property.
View 1 RepliesThe code generator creates code with references to a component I am using, before it's dependent components (datasets) are initalized. Although I can correct this by editing the form.designer.vb file, everytime I make a change on the form the code is re-generated in the wrong order. Where does VS2008 store information about the order of the components for code generation.
This Runs:
'
'AppointmentBindingSource
'
Me.AppointmentBindingSource.DataMember = "appointment"
[Code].....
I have a pretty busy UI that involves a lot of controls nested in table layout panels.
I'm trying to use the "Tab" overlay to set the tab order, but the problem is that the numeric boxes you click to choose the order overlaps on controls that are close together so I can't see which is the correct control to click.
how to either zoom in or alter the layout?
I have a combo box bound to a datasource. I need to change one combo box (of many) to order the items in descending order.I'm guessing I could order the collection in the dataset, but that will mean all my combo boxes will be reordered?
View 2 RepliesI have a databound Datagridview. The DGV is bound to a datatable of a strongly typed DataSet created using the wizard. Is there any way to re order the columns before displaying them eg: the Columns are displayed in the DGV in this other Col4, Col6, Col3, Col1,Col5, Col2
But I want to it to show as Col1, Col2, col3, Col4, Col5, Col6?
I realise that the display order followed the Column order in the database table and by extension, the datatable. I have re-arranged the columns in the Database but the Datatable still retains the old order.
This might not be so 'VB' as it is 'SQL using VB' I have an application with a built in MS Access DB. I have a table that has a column full of integers, I shoot the DB a SQL "order by 'column name' " string and it returns the table ordered by my column of integers.BUT it returns them like this, and I want them like this
0 6
1 5
2 4
[code]....
How do I get the OrderBY to do a descending list starting with the highest number?
I'm working on the exercise page 73 (VB 2010 in 24 hours). It's basically a form with 2 text boxes, 2 text labels and a command button. It's really simple and uses this loop to cycle through the items, and tell me the name of them in a Messagebox
[Code]...
I have to order a table following a logical order but I cannot find the appropriate ORDER BY clause.To simplify I have 2 fields field1 and field2
1 record : field1 contains �2� and field2 contains �1�
2 record : field1 contains �1� and field2 contains �2�
3 record : field1 contains �2� and field2 contains �2�
[code].....
I want succeed in having a file contained in my executable. This means that I must be able to copy it alone on any folder in the local system.I can upload it somewhere and then make my VB program do download it, but what if the user is online ? And I want it to be only one exe.
View 14 RepliesI want to extract text which has no tag.
The HTML looks something like like this[code]...
I am thinking I can read it into a string and then search for the parts in the <a> and <strong> tags but don't know how to write it.
I am developing a software using vb.net.
In one case I have this output : Developing Area Number Declaration (DAND)
I have a problem with something I have done many times but this time it just doesn't work. This is what I am trying to do (in Visual Studio 2003 and VB.NET). Earlier in the [Code]
View 1 RepliesI have a web application running written on ASP .Net.We have a class accessing the back end written in VB .net which has shared functions for DB interactions.The above error comes up when ever two users are in the same page... tying to do the same thing.Couldn't find a reason why this would happen.The scope of the SQL command is limited and parameters are cleared at the end.
View 2 RepliesI got this error message:An OleDbParameter with ParameterName 'p.Fornavn' is not contained by this OleDbParameterCollection.The line that is marked with yellow is:
Me.OleDbCommand1.Parameters("p.Fornavn").Value =
SELECT l.ID, l.Etg, l.Rom, l.Lokasjon, l.tilkoblingID, p.ID AS Expr1, p.Fornavn, p.Etternavn, p.Epost, p.Tlf, p.lokasjonID, t.ID AS Expr2, t.port, t.Modul,
[code]....
I'm trying to delete all the worksheets contained in a workbook using the code below but I get this error:
"Attempting to call into managed code without transitioning out first. Do not attempt to run managed code inside low-level native extensibility points, such as the vectored exception handler, since doing so can cause corruption and data loss."
For Each obj In xlWorkBook.Worksheets
xlWorkBook.Worksheets(obj.Name).delete()
Next
I tried to do this a different way yesterday and it told me I couldn't have a workbook with no worksheets. Is this written in stone or can it be done?
dim l as List(of MyClass) = new List(of MyClass) and I want to get the type of the objects contained in the list, how do I do that? The obvious answer, that doesn't seem to be possible from my actual implementation, would be to do something like this...
public function GetType(byval AList as IList(of GenericType)) as System.Type
dim lResult as system.type = nothing
if AList.Count > 0 then lResult = AList(0).GetType
return lResult
end function
But what if the list is empty and I still want to know the type it contains?
I am having some real issues with this one. I have a class which contains two other objects...but I cannot seem to instantiate those sub objects. Here is the code for my class:
Code:
Option Explicit On
Public Class Boot
[code]......
How do I easily navigate textboxes contained within a form.My form has a lot of textboxes so I don't particularly want to make a KeyDown event for each.I think I need to group the controls and handle it that way somehow with their TabIndex.I'm lost without the control array of VB6 and can't find anything to show me how to do it.
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