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How i can to change the size of a form c# without losing the structure

I made a virtual keyboard in C# Visual Studio, but I have problems when I try to change the dimensions.
This is the virtual keyboard:
and this is when I try to change the dimensions:
I lose the buttons. I found a tutorial where he uses a rectangle.
In this photo is the "main" function, and after I called this function for every button from list (I make a list with all the buttons), I lose all the buttons. Only shift/caps remain because they are special characters.

Your best bet is to anchor the buttons and enable auto size then set the AutoSize mode to grow and shrink.
If all else fails, writing a function to change the font of each button to change down in size according to the size of the form is your only option.
What the problem most likely is is that the font sizes for the individual keys is too big and when you re-scale the keyboard the font doesn't change to compensate for the scaling down in buttons.
(EDIT)
Also, next time you make a post on these forums try to keep up with the formatting and try to use more accurate descriptions of the problem as well as the properties of the buttons because all of my possible solutions are just going off a whim based on prior experience. Thanks
(EDIT EDIT)
Ok I just saw the resizeControl method, I didnt see that before, however, my previous edit still applies. Properties for the buttons would be much appreciated to help answer your question. Also, try to edit the image to instead of being an image, just use the markup language like so:
//Like this
To make it easier for us to use and help debug, if you need to know how, just add 4 spaces before your code. Again, thanks

Display labels in horizontal tree [treeView] Windows Forms

I am working now on the project for my client, which is something like Display Editor, where user can add display, write something in it etc... Every display is connected to another display, by that I mean, it has Parent, Left/Right Sibling and Child. Its practically linked list. And you can jump from one display to another with arrows keys Up, Left, Right and Down. All this is completely okay. My problem is, that client want something like treeView, but horizontal. Because when I use normal treeView, Display dont match with the arrows rules (Up,Left etc...), Its vice versa.
I was desperate so I created my own Control, where I am adding Labels and every time new Node is added I am changing Location of already exists Labels. Here are some images.
Second child of "Right Sibling"
"Right Sibling
But as you can see, its not looking very nice and also its not very good for using. Also I cant figure how to delete there, because location changing when deleting something is too much complicated. I searched a lot and I saw like thousand articles, but everything useful is for WPF and I am using Windows Forms, that is the problem. I am afraid I will have to figure it out, but first I am calling for help. Thank you.

Adding anchor line to a Bing Maps custom pushpin and allowing the user to drag

I am currently working on a Silverlight application using the Bing Map control, i am using a custom pushpin made up of an Image and a text block within a grid element, which works fine, this also allows me to have hover and right click events for each pushpin so all good so far, however there is a need for me to enable the user to drag the pushpin in any direction and have an a line connecting it to its actual position, sort of like an anchoring point.
I am struggling to see how to do this, I have seen lots of information on making the pushpins have the capability to be moved by the mouse but the line and anchor part is causing me a bit of a problem. Currently i keep my pushpins in various Observable Collections so that when they are updated the UI updates. If anyone has an Idea on a clean way of adding this functionality please let me know it will be much appreciated.
Many Thanks

I haven't got time to knock up a complete example. However I'll give away the basis of the solution. Replace the template with one based on a Canvas. For example you could have an ellipse to be the actual point on the map, a draggable border that has the ContentPresenter and a line to act as a tether.
The code needed is a) allow the Border to be dragged about and b) to move one end of the line about so that it lies under the Border.

I am still interested in other approaches but I have come up with a solution of paring my pushpin element with a MapPolyline, this in conjunction with the mouse handling to allow the user to drag the pushpin updates both, it is pretty effective and will do for now. I would still like to hear from anyone else with better suggestions though.

Why does clicking in a text box cause an AutoScroll panel to scroll back to the top?

Finishing up a register form in a C# application and I noticed with the panel if I enable AutoScroll and then have a textbox that is below the scroll and click on it it jumps all the way back up to the top. Is there a way to fix this with some code or is it a propriety?
It's a little difficult for me to explain it in words, so here's a short video that shows the behavior.

I have had the same problem. I fixed it with this code in my panel:
protected override Point ScrollToControl(Control activeControl)
{
return this.AutoScrollPosition;
}

I had this exact problem. I had to remove the docking from my panels on the form and this fixed the problem.

Since apparently no one has seen this behavior before and could provide a quick answer, I opened up Visual Studio to try and reproduce what you describe.
I created a new WinForms project with a GroupBox containing a Panel whose AutoScroll property is set to "True". Then, I added two new GroupBox controls inside of the Panel, each containing two TextBox controls. The first embedded GroupBox is at the top of the form, entirely visible at startup; the second embedded GroupBox is at the bottom where it must be scrolled into view. This is equivalent to the design/layout that you have as best I can tell from your description and video.
However, when I run the project, scroll down to the second embedded GroupBox and select one of the TextBox controls that it contains, it performs exactly as expected. The TextBox control that I clicked on gets the focus, without scrolling the entire panel back up to the top. I can't seem to reproduce what you're seeing. If you could either tell me what I've done wrong in designing my test sample or post the smallest sample project needed to recreate the behavior you're experiencing, I might be able to help.
Otherwise, here are a few suggestions of things to investigate:
The tab order of the objects on your form. This really shouldn't be causing the behavior described because clicking on a control should set the focus to that control, regardless of its position in the tab order, and jumbling up the tab order multiple times in my sample project still doesn't appear to have the same effect. But I suppose it's worth a try anyway. In Design Mode, go to your "View" menu, and click "Tab Order". All of the controls that you can set the tab order for will have a little colored box at their top-left corner, indicating their tab order in each container. To set the tab order, click once on each of the controls in the natural order you want them to be focused.
Scour your code for any <Control>.Focus or <Control.Select> statements. Make sure that you don't have any validation code that's altering the tab order in any way during run-time. This could be causing focus to jump back to a control located near the top of your Panel, forcing it to auto-scroll to the new location.
Try to reproduce the behavior in a brand new, clean project. Ideally, create a new project in Visual Studio and lay out the controls the exact same way you have them in the project with which you're experiencing difficulties. This is the same thing I did, partly because I don't have your particular project to work with, and also because this is the best way to troubleshoot particularly tricky behavior. It's more likely there is some quirk to your design or source code that's causing this behavior, rather than some kind of bug in the controls themselves. But either way, this will let you know exactly where the problem is occurring, which will get you that much closer to a solution.

You can use TableLayoutPanel" instead of "Panel" to avoid scrollbar change its position.

Space-filling ToolBar item in WPF

How can I make an item inside a ToolBar fill all the remaining available space? Or, how to right-align some items, since that would give me the same effect in my case.
Note that solutions which involve nesting another container (like a Grid) inside the ToolBar don't work since that disables the special behaviour ToolBar gives to it's items (like no normal borders and look, simple outline border on hover, not receiving focus after click, etc.).
Additionally, anyone knows how to get rid of the little button that would show additional icons that overflowed from the toolbar if I had any?

I ended up using this solution:
http://karlshifflett.wordpress.com/2008/01/23/wpf-sample-series-stretch-toolbar-width-of-window/
It's not ideal, but it works. I still don't know how to get rid of the dropdown on the end though.

You can remove the button at the end by re-templating the toolbar. You can likely solve your other query this way too.

I wrote up a soluton for creating a "space filling" label that dynamically sizes to allow to you "right-align" items in a toolbar. Check it out: WPF Toolbar Items HorizontalAligment="Right"