Develop Reference

How to make a listbox appear on the form at the click of a button?

I'm a university student therefore I'm not sure on everything to do with writing code. If you could provide hints or a bit of help. I have hidden the listbox via the designer. I've tried listbox1.Show under next button event handler. I've tried looking around on the web but I'm getting no where.
Now answered. Thank you

The solution depends on how you've hidden your listbox. If you did set visible property to false, just use listbox1.Visible = true;.
If you used ' Send to back' to hide it behind another control, you can use listbox1.BringToFront(); to set it into the foreground.
See https://msdn.microsoft.com/en-gb/library/system.windows.forms.control.visible.aspx and https://msdn.microsoft.com/en-gb/library/system.windows.forms.control.bringtofront.aspx

Inside Button_Click Event write:
listbox1.Visible = true;

In my opinion, the best way to show/hide controls (in WPF) is to collapse them. This allows the rest of the controls to behave as if the collapsed control does not even exists, until it is made visible, of course.
This would be done like so:
control1.Visibility = Visibility.Collapsed;
control1.Visibility = Visibility.Visible;
If you are using WinForms, controls will not have a collapse option, and the correct way would be as Almansour has said.

Setting ContextMenu Style to 2013

I'm trying to change the default style of the contextmenu to 2013/2015 in my rehosted vs13 application.
The problem occurs in only one designer, everywhere else its the correct one. I've tried to override both the XAML code and the code behind, checked if something else was changing the style, but without anykind of result.
Is there even a way to change the default style? Am I overseeing something?

Okay, after some heavy research/try and error if finally found out what was wrong: I couldnt access the control I wanted to change the ordinary way, so I had to think outside of the box (and ask a collegue for help).
This is the code that works for me, its not pretty, but it deletes the 'standard'-style set by WPF.
var dv = wd.Context.Services.GetService<DesignerView>();
dv.MenuItemStyle = null;
dv.MenuSeparatorStyle = null;
dv.Resources[typeof(ContextMenu)] = new Style(typeof(ContextMenu));
Quick thanks to Glen Thomas for trying to help.

Windows form code pass to WPF

i am trying to make a Column header in WPF by using code like this
listview.Columns.Add("Name",100);
listview.View = View.Details;
listview.FullrowSelect = true;
listview.GridLines = True;
and the error is always saying that i need System.windows.Controls.Listview but when i added the class using System.Windows.Controls.Listview; it's the same error

Please have a look here, I think this is something that you are trying to achieve.
Adding Columns programatically to listview in WPF?

Please notice that WPF use Presentation DLL to construct UI while normal windows from use System.Windows.Forms. As a result, you can't use the Win Form' s control in WPF, you can use gridview instead, please refer to Moeen' s link

How to add link Labels at run time in Windows form

I have been making a Windows Form Application in C# using the Visual C# 2008 IDE.
There are basically two forms in my application. One is created at Runtime and it's layout is undefined and the second one's predefined.
Now, I have been adding form elements using the toolbox provided and don't have any idea how to add them using written code(not using toolbox). I want to add n number of Labels to the second form which is undefined. n can be anything(decided at runtime, depending on the user's input). Can anybody tell me what is the efficient way to do this?

Just a quick example of a "dynamic control" being created at run-time and added to the form:
Label lbl = new Label();
lbl.Text = "Hello World!";
lbl.Location = new Point(100, 25);
this.Controls.Add(lbl);
You can replace "this" with the container to add it to, like "panel1" for instance. For containers that have their own layout engine, like a FlowLayoutPanel, then you wouldn't need to specify a Location().

Create a new LinkLabel(), set its properties (in particular, text and position), then add it to the Controls collection of your form or any panel.
You may also want to add event handlers, and store them somewhere (probably in a List<T>) so you can change or remove them later.

Create one in the designer, configure it's properties as you wish. Then go to the designer file, which name is like Form1.Desiner.cs, copy the code related to your LinkLabel (find everything with text search) and paste it where you wish :)

Infragistics UltraListView auto scroll

Does anyone knows how to make the Infragistics UltraListView control scrolls down automatically whenever a new item is added?

try this:
UltraListViewItem i = listView.Items[listView.Items.Count - 1];
ISelectionManager selectionManager = listView as Infragistics.Win.ISelectionManager;
selectionManager.SelectItem(i, true);
i.Activate();

UltraListViewItem has BringIntoView() method, which would do the trick.

For a simple scroll down, use the PerformAction method. There are a variety of Infragistics constants that can be used as the argument... intellisense gives good info on this:
(VB)
UltraListView1.PerformAction(UltraWinListView.UltraListViewAction.ScrollVerticalBySmallIncrement)
And yes, it's a programming question. ;)