I have a problem. I want to create a toolbar.xaml user control. I open a page in content of TabItem In mainpage.xaml. How can access and manage this page from the toolbar user control.
Please help. thanks..
either user static variables in parent control and call them directly in the child one.
or raise EventHandlers from child control and subscribe them in parent control.
Related
I have a created a custom user control which consists of 2 controls:-
Textbox
Listbox
The function of this control is to act as a dropdown list. Below is the image of the control:-
Problem
Now the problem i am facing is that if i insert this user control into a container control like a panel then the list gets hidden inside that container control.
and if i just create the user control outside the container control then it would interfere with the Tab Order (focus order) of the form.
Is there any work around where the user control exists in the container control and still shows the complete list without being hidden in the panel?
Edit i wrongly added c# instead of VB.NET
It can be achieved by having the list as ToolStripDropDown. Similar customization have been done in the following discussion,
Show control inside user control outside the boundaries of its parent
Hope this suits you.
For an app that uses user controls instead of forms and the first user control has a listview, where the user clicks or selects "Create New" Or Delete, what is the best way to transfer the data selected in the listview to the detail screen (separate User Control) where the data can be edited?
Can I just reference the list view in the first UC in the Details UC? something like:
ucHeader.lvSetups.FocusedItem.SubItems.Count = 0
from the ucDetail user control?
Saying which way is the best would produce a heated discussion with every ones opinion. However, here are a few ways I would tackle this. While there are more options, these are what I would do:
You should expose any information you want to read from a user control in the form of a property, readonly if you must. Just an example because I don't know what your object types are:
Public ReadOnly Property SelectedItem as object
get
Return Listview1.SelectedValue
end get
End Property
You can also use events to tell the parent of your user control that a selection was made. You can pass whatever you want in this event, even the selected object. If you don't want to pass the selected object, grab it from the property you created (like #1) in the event handler.
If i want to the parent dialog get the data of the child dialog when a button（typically a OK button） of the child dialog's button is clicked. how to realize?
My app is like this type: initialize i start an dialog, when hit the new button, it create a new dialog for configure a database connection. when input the necessary info. i can click the OK button of the child dialog, the child dialog will not live, then i need use the father dialog to save the info input in the child dialog.
How to realize it?
The C++ wxDialog object remains alive even after the dialog on screen is closed. So typically you store the data in this object fields (either using validators or by manually overriding TransferDataFromWindow()) and then retrieve it from this object as needed in the code that showed the dialog.
I have a problem stated below....
I have a MDI form having different child form. if i open the form then if related data not exist in database, a suggestion banner should appear top of the forms to enter related data first. Even, if I close the child form, suggestion banner should remain open and Onclick on that banner go to specific form to add the record. There should be different banner of different forms. so please help me to implement this scenario.
Thanks in Advance.
I want to use which control as banner. so after struggling i fount panel best as banner. Setting panel property -> AccessibleRole = Alert. So I implement scenario easily.
Instead of opening the child form, open the banner form first (which opens the child form).
Then check in the banner form if the data has been entered. If it has:- close the banner form.
I have a tabcontrol that creates tab pages from a "User Control" I created (a separate form in vb.net) using this code: (MainTab is the separate user control I created which has text boxes etc in it)
Dim tmpTab As New MainTab
myTabControl.TabPages.Add()
Dim tmpTabCount As Integer = myTabControl.TabPages.Count
myTabControl.TabPages.Item(tmpTabCount - 1).Controls.Add(tmpTab)
myTabControl.TabPages.Item(tmpTabCount - 1).Text = "Untitled"
I'm using the devexpress xtratab control so the code might look a bit different than the default vb.net tab control.
Now in my MainTab user control file file, I can't for the life of me figure out how to call a control in the form1 where the xtra tab control is placed on. "Me.Parent.Dispose" works for closing the tab when executed via the MainTab control, but that's as far as I can get for communicating with the parent from.
Does anyone know the solution? I'm not sure if I have to reference something in the MainTab user control or what in order to communicate with any objects on the default form1.
Generally speaking, I avoid making my child controls cognizant of the parent. It leads to unpleasant coupling more often than I care for.
Consider adding a custom event to your MainTab class that your form can subscribe to. When you want to pass a message to the form, your user control can invoke the method, and your form's event handler can process it accordingly. This pattern helps keep your user control pluggable into other forms by reducing its dependency on its parent.
Creating a user control event in a windows form is discussed in this MSDN article:
http://msdn.microsoft.com/en-us/library/aa302342.aspx