Develop Reference

C# WPF Create function that creats new inputs

I am using C# Wpf and i would like to create a function that once you click on a button A new Textbox will appear is this possible and I want to know if it possible to increase the form hight when a new Textbox is created

The question isnt exactly specific but yes you can make new UI elements in the code-behind. In WPF you would put your button on the window, then add the "Click" event to it. Then in the click event you could code something like. . .
private void Button_Click(object sender, RoutedEventArgs e)
{
Button newButton = new Button(); //Create a new button control and assign it to newButton
newButton.Width = 35; //Access fields like this (You can access any of the ones you access from the Xaml user interface)
newButton.Height = 20;
newButton.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
newButton.VerticalAlignment = System.Windows.VerticalAlignment.Top;
newButton.Content = "click me!";
grMain.Children.Add(newButton); //Add it to the grid
}
grMain is the name of my grid, make sure you name it and call it by the name. You can also call other elements, such as a stack panel or whatever you need. So for your case just make it a textbox instead of a button
Oops didnt see the second part of your question! To resize the window you need to first add a name to it in the XAML (Like you would name a grid or button - just name the window something). And just as we called grMain in my example call that and change the height/width properties.

how to access a user define controls iner controls in parent form

I'm new to windows forms programming so my question may sound little strange.
I have created a user define control (countdown timer) now I'm creating n no of it dynamically in a form by Click of a button (Add new timer) its working well and good.
Here is the Creation Code
private void Addnew_Click(object sender, EventArgs e)
{
UserControl1.userControl11 = new UserControl1();
flowLayoutPanel1.Controls.Add(userControl11);
}
My user control has a Reset button that reset all the content inside the user define control.
it is also working, but What I want Allow user to reset all the Created timers using the “Reset All” button on the form.

Okay one way to do this.
Create a List<UserControl1> private member on your form called say _myUserControls
In your Addnew Handler add it to the list.
If you have a remove button, don't forget to remove from _myUserControls as well.
Add a Reset method to your UserControl1, that does what it needs to do.
Then in your Reset all button click handler
foreach(UserControl1 ctrl in _myUserControls)
{
ctrl.Reset();
}
Jobs a good 'un
The answer I referred you to in comments, would be a way of finding all instances of your UserControl1 class, so you wouldn't need an internal list.

Usercontrol removal

My problem is the following. I have a form which when it loads up invokes a user control onto it. On the user control I have buttons. With the buttons I would like to make the user control disappear with all the buttons and picture boxes on it and make a new user control appear. The appear part is all right but I can't make the user control disappear with all the objects on it.
Can you help me with this one?
So the dispose method closes the usercontrol well, but then I can't make the new user control appear. Code is like this:
akusztikusUserControl auc = new akusztikusUserControl();
public menuUserControl()
{
InitializeComponent();
}
private void akusztikus_btn_Click(object sender, EventArgs e)
{
this.Dispose();
this.Controls.Add(auc);
}
}

Have you considered using Panel or a TableLayoutPanel control ? In both cases you can remove controls through the .controls.remove option
You can then just add the user control to the panel / tablelayoutpanel whenever you need to use it again.

How to use same textbox with other tabs on the tabcontrol?

Sorry for the simple question and also sorry if there is an answer on the site and I couldn't find.
I want to use same textbox in every tab that I use on my form. How can I do that?

Add this to the TabControl's SelectedIndexChanged event handler.
private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
{
tabControl1.TabPages[tabControl1.SelectedIndex].Controls.Add(textBox1);
}
Adding a control to one tab page's Controls collection automatically removes it from the others.
Note: I have tested it by adding two lables on the form above the tab control and added these two lines to the method shown above:
label1.Text = tabControl1.TabPages[0].Controls.Count.ToString();
label2.Text = tabControl1.TabPages[1].Controls.Count.ToString();

Put the TextBox in the parent control of the TabControl. It can hover over all the rest. You might need to rework the focus traversal though.

C#, fire event of container

I have a MyButton class that inherits from Button. On this class I have placed several other controls (Labels, Progessbar). The problem with this is that the controls on the Button make it impossible to fire the Button.Click or Button.MouseHover event. How can I achieve it that the controls on the Button are only displayed but are "event transparent": A click/hover on the label and progessbar is the same as if I clicked/hover directly on the Button (including sender and everything). Something like "inheriting the events from the parent".
class MyButton : Button
{
Label foo = new Label();
ProgressBar bar = new ProgessBar();
}

You should derive from UserControl then have the button as a child control, and bubble up the button child's on click event.
This link is probably more than what you need, but it's a good starting point.
UPDATE
As pointed out, you may not be using ASP.NET. So here is another post that talks about different custom user controls, specifically what you're after is a Composite Control. This is for Windows Forms.

Write Click event handlers for the label and PB, have them call PerformClick().
Making controls transparent to the mouse is possible but is ugly to do. You'd have to override WndProc() to catch WM_NCHITTEST and return HTTRANSPARENT. The all-around better solution is to not use controls. A Label is just TextRenderer.DrawText() in the button's Paint event. ProgressBar isn't hard either, e.Graphics.FillRectangle().

Having the child controls be real controls in front of the button (either in a class inheriting from Button or from UserControl) may make it hard to get button-specific events working properly, as you have found. (Edit: Although it's hard, it's not impossible -- see Hans Passant's answer)
As a workaround, instead of using child controls, you could custom-paint them onto the button surface, since you don't need most of the functionality of the controls (events, focusing, etc.), just their display.
You can do the additional painting in the OnPaint method of your class. Something like:
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
e.Graphics.DrawString("My fake label", Font,
SystemBrushes.ControlText, new Point(10, 10))
// draw progressbar
}
To update the display, you would need to trigger a repaint of the Button using Invalidate().
Take a look at Custom Bitmap Button Using C# on CodeProject for a more complete example.

This answer was here a moment ago, but got deleted:
Can you inherit from UserControl instead? This will allow you to place other controls on the control surface, including your button and subscribe to their events.

If you're using WPF, I guess what you're looking for would be something called Bubbled Events. It's a feature in WPF by which events are bubbled from a control to its parent (in your case, it would be from your ProgressBar and Label to your button). I found this article on the matter which I think would be of help to you.
Hope this helps :)