MDI Parent And Children
Jun 3, 2011
I have four children in a parent container. Each child form is a test for the user to type correct answers into text boxes. Option to open each form is on a menu strip in the parent. In form load, I have disabled all but the first form option. I only want the second form to become available if the first form answers are correct. I would like to figure this out on my own as much as possible. I have searched on line but since I am not sure what to ask, I have not found and answer. Can someone get me started in the right direction? Perhaps some reading that would explain how to go about this, or what I should be typing into google to get what I'm looking for.
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Jul 2, 2008
How do you set it up so that a treeview control will select/deselect all children of a parent when it is selected/deselected? Is there a property you set or do you have to write code to do it?
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Apr 13, 2011
I'm working on a drag-and-drop method to copy items from a listview control to a treeview. I've got the drag and drop working, but I'm hoping to limit the ability to drag items that create a child of a child. Ideally, if someone drags an item from the listview to the Treeview and the drop the listview item over a child, it would drop the dragged item to the parent.
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Apr 17, 2012
I have a the following Class structure. Company > List(of Departments) > List(of Employees) I want to Query a Company to find out if it has a department of the following name and a Employee in that department with the following ID! How could I query this. The way I have the code it expect to return one department so I have it doing
[Code]...
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Feb 3, 2010
Basically, I am trying to write a LINQ to Objects statement where the relationship is a grandparent, parent, child relationship. (You could also call it a Master Detail relationship.)
In Legacy code here is a simplified version what I am trying to accomplish.
Dim coverages As New List(Of Coverage)
Dim coverage As Coverage
For Each rl In oClaimsPolicy.RiskLocations
coverage = New Coverage
coverage.Level = "Location"
[Code] .....
If is it not clear one Location can have many Items and one Item can have many Coverages. I basically want to list the items and show the relationship between grandparent (Location), parent (Item) and child (Coverage).
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Jan 25, 2010
I'm experimenting with a plugin architecture for my company's internal business system. I have managed to read all .DLLs in a Plugin folder which implement a specific interface. What I am trying to figure out is the best method of communication between the "host" MDI parent application and forms that will be in the .DLLs which I intend to make MDI children.
Currently, I am returning just ToolStripMenuItem objects from the .DLLs to add to the MDI Parent. I've also tested that events wired in the .DLLs to the ToolStripMenuItems do propagate to the code in the .DLLs. I've also managed to return a Form object via the interface and open that form, as the Plugin folder is being "scanned".
However, I am not clear how I would make these forms MDI children. Also, any other forms living in the .DLLs will also have to be MDI children. I created a VS 2008 Addin project just to see what's going on, and it seems that the Addin accepts an Application object on which it adds to the ToolStripMenuItems and does other operations. The code to build the menu inside the .DLL. This is opposite of what I have done so far, where the MDI requests a ToolStripMenuItem from each .DLL and adds the returned object to its own menu.
Would designing my plugin architecture to accept an application object in the same manner the only way I could get forms to open as an MDI child? Am I asking for other, currently unknown to me, headaches by NOT passing in the application object to the .DLL?
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Nov 8, 2009
i need to check all child node when the parent node is checked and i had do research from the internet but it seem that i had a error which is Type 'MSComctlLib.Node' is not defined.do i need to import any reference? [code]
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Aug 3, 2011
This is a challenging one that got me stumped while I was coding today. Suppose I am running the Sub Test1() and Test2() and would like to print out the value of the Shadows method of the instance of the object I am passing in to TestCall() (see below - it is clearer) using the following restrictions:
Can't change the contents of Class A, B, and C
Can't change Sub Test1() and Sub Test2()
TestCall() can't have an if, select case etc. statement that tries to figure out the type
[code].....
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Jun 24, 2009
I have a main form, and some sub forms, and each sub form can have some sub forms. When I have multiple sub forms open, and I try to get data from the parent form, it returns the data from the wrong parent form.For example I have two instances of Mainform.subform running. If I do something like this in a child form of one instance of the subform. It returns data from the other subform.
dim l = Mainform.subform.listofdata
Edit:I am using visual Studio 2008. Winforms, form designed using designer. In my mainform I am doing this
Protected Friend frmMain as Mainform
frmmain = new mainform
In frmMain I am doing this
Protected Friend frmsub as new Subform'
frmsub = new subform
[code]....
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Apr 10, 2010
I would like to know if there is some simple code to release a child control from it's parent control, without having to name the parent control. In pseudocode, I'm looking for something like this:
[Code]...
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Apr 15, 2010
Is there a simple way of tracking the change of an Mdi's children i.e. when they are created and closed, something like an event OnMdiChildListChanged (I realise this doesn't actually exist).
I am also aware that I could have a method within my Mdi that handles the creation of child forms and logs the state of them or even create an Interface that defines that a child form has a "NotifyParent" method that is then called on close of the form, but i was wondering if there was any built in events that i could plumb into?
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Aug 17, 2009
How do you get the children of a panel?
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May 6, 2012
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I'm sifting through the dump of AniDB titles and everything works except that it only sees 7161 elements instead of 9200. Anyone have any idea why? It's not calling an exception on the load method as if something is wrong. Even when I change it to just take the root element and then get the count of children, it gives 7161. Like it doesn't even see the last 2000.
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Jun 3, 2011
A common problem I have come across when migrating from VB6 to VB.NET is that to change the focus between MDI children, you can't just click any control to give that child focus, you must click its title bar. The solution that I have found works is to enter the child form's Designer and change the following:
Code:
#Region "Windows Form Designer generated code "
<System.Diagnostics.DebuggerNonUserCode()> Public Sub New()
MyBase.New()
'This is required by the Windows Form Designer.
InitializeComponent()
[Code] .....
This needs to be done on all child forms in the project. If one form does not have the fix, once it's opened, the bug will return even when the form is closed.
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Dec 12, 2010
I would like to turn on an app in the background that disables or temporarily remaps all but the alphanumeric keys while they are using my laptop if possible.
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Oct 31, 2011
I start with VB 2010 since a short time.I need to check in a Treeview if a node has children or not.In VB 6 there was the property clildren that allow to understand this.
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Apr 20, 2011
I'm trying to remove all children (and sub-children) of a Grid in WPF (I'm really new to the whole WPF business). Is there a good way of doing it programmatically? I need to do this so that I could leave an empty canvas (Grid) at one point and draw other stuff on it.
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Aug 24, 2010
Im new to treeviews so I hope this is not posting a problem that has been covered. I want all the children of a checked parent to also be checked. I have found various snippets that can achieve this but only for one or two levels. When I expand further than 2 levels the children are not checkeds. What am I missing? I have managed to find this piece of code that I am using in both the "AfterExpand" and the "AfterChecked" events to achieve the result. There must be a better way.
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Apr 29, 2009
i make a parent and children form and when i show children form and drag into parents form , when parents is little to show the children form , parents form enables the scrollbar and then show the chilren form better , how can i do something that avoid this status ( don't show scrollbar into parents form when the children form is bigger than it)?
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Oct 1, 2011
I'm adding rectangles to a wrap panel like this:
For i = 0 to 20
wrapPanel.children.add()
next
I would like to use this loop because I don't want to specify the limit:
Do
wrapPanel.children.add()
Loop
But how can I break the loop when the wrap panel is filled? For example the loop would stop when the wrap panel can't display a rectangle in its full height or width.
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Aug 19, 2010
From code analysis (Visual studio), I got this warning:
[Code]...
The warning disappear but then the literal control isn't anymore being displayed on the page... EDIT Note that the code come from a Microsoft web page: [URL]
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Nov 3, 2011
I need to modify a xml file (actually a .rdlc report file) and add some nodes which have a lot of children nodes (and those children nodes again have children nodes). Actually they are almost the same strucutre, like this one:
<TablixRow>
<Height>0.23622in</Height>
<TablixCells>
[Code].....
and it will add my specified NS. (like I said, XElement.Parse(string) won't add it) So now I can construct the correct node. For my second problem I still can't figure out: I can't navigate to the target node by using the element name since it won't search for correct NS.
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Dec 22, 2011
My application creates MDI Children programatically. I have a frmBrowser as an MDI Child which I create multiple instances of. There are several other MDI children in the MDIParent. How do I only cycle through the frmBrowser MDI children?
For Each Child As frmBrowser In frmMain.MdiChildren
'perform action on child
Next Child
The code above gives an error for all the Child that aren't of the type frmBrowser.
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Oct 28, 2009
I have two mdi children forms open. I would think that clicking on the non active form would change the focus from the active form to the form I just clicked on. It only does this if I click on the title bar. Then the focus changes. But if I click on a control on the non-active form, focus does not transfer.
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Apr 17, 2012
I have a WPF ParentUserControl and some ChildUserControlA ChildUserControlB etc. (also WPF controls)
The ChildUserControls are controls containing on them some other basic elements (textboxes, labels, etc)
In the main form's status bar I need to display the name of the currenlty mouse overed ChildUserControl.[code]...
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Oct 22, 2011
I want to make something similar to the listbox.children property. I know I can write this to return the children of the listbox:
[Code]...
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Feb 9, 2010
I have an MDI application that shows a child window, obviously. I want multiple instances of this child window to be possible. However, I only get one. The first one will close out and the new one will show.
Dim newWindow As New frmWatcherWindow()
newWindow.MdiParent = Me
newWindow.Show()
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Dec 17, 2011
One would imagine that clicking anywhere within the MDI Child form (or on any control) will focus that form. But in my application I can only focus a MDI child by clicking on its titlebar, which is an abnormal behavior on the part of the user. My forms are filled with either controls or panels so I don't have the luxury of just "clicking on the form." But clicking anywhere within it should focus it.
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Apr 16, 2010
I'm trying to msgbox all the children nodes that exist in a treeview, however i was not able so far to msgbox except the first nodes in the first level of bracnching in the treeview, i want to go more in depth & msgbox all the children nodes.
Dim child As TreeNode For Each child In TreeGraph.Nodes("A").Nodes MsgBox(child.Text) Next child
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Jan 29, 2010
I am trying to get the screen capture of a MDI children form. Somehow it is just not working.
Private Sub btnScreen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnScreen.Click
Dim frmMain As frmParent = Me.MdiParent
For Each ctl As Control In frmMain.MdiChildren
If TypeOf ctl Is frmOverview Then
[code]....
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