I create an user control that has some textbox and buttons.the problem is when I use tab to traverse in My form when my usercontrol get focus the focus go inside of user control and buttons insid if it would focus.How I can simply go to next control after my user control not inside it?
thanks
If the controls have Focusable CanHaveFocus TabStop sort of properties, set them to false.
Also set the TabIndex properties of those controls to 0. I'm sure that the controls will be ghosts in terms of getting tab focus.
Set TabStop property on your custom user control elements which you want to exclude (eg. your button) to false.
Related
What determines the tab order when more controls have the same tabindex property?
For example, after adding a texbox to an empty form the texbox's tabindex was 0. By duplicating the texbox (Ctrl + mouse drag) the new textbox had tabindex 0 too. Then I added a button and its tabindex was 1.
After running the program the focus was on the 2nd textbox.
Then I changed button's tabindex to 0 so after that all controls had tabindex = 0 and after running the program the focus was on the button which was added last.
Does that mean that in case of multiple controls with the same tabindex property the tab order will be the opposite of order of adding the controls to the form? Seems as the tab order of the controls which share the same tabindex is just the opposite of their order of appearance in Form.Designer.cs file.
Or is it that button control always has priority over textbox control when they both share the same tabindex?
Is that documented somewhere?
From MSDN Control.TabIndex Property
A tab index can consist of any valid integer greater than or equal to
zero, lower numbers being earlier in the tab order. If more than one
control on the same parent control has the same tab index, the z-order
of the controls determines the order to cycle through the controls.
And a bit of a nuance as well:
For a control to be included in the tab order, its TabStop property
must be set to true.
So, you're seeing controls with the same TabIndex value tab in reverse order from the code behind file due to the z-index value.
I'm writing an application in c# .NET 4.0. I've implemented TDI using TabControl and TabPages. On each TabPage there is a bunch of TextBoxes, ComboBoxes, Grids, Checkboxes etc. Each control has Validation and Validated event attached. Form, TabControl and each Tabpage have CausesValidation set to false. On each TabPage there are also some Panels, each has CausesValidation also set to false. Other controls (TextBoxes, CheckBoxes) have CausesValidation set to true. In this way, I'm able to switch between TabPages independently. However, when on one Tab, some control fails validation, controls on the rest of TabPages are prevent to receive focus. I've implemented onSelecting and onDeselecting events for each TabPage, so one way is to switch off CausesValidation on controls on TabPage, which is going to be hidden, and switch on CausesValidation on all controls on TabPage which is now in the front. Is there a better way to achieve this functionality?
Added:
I want validation to take place for each tab independently. Result of validation of one tab should not affect behaviour of other tabs. Changing AutoValidate property to EnableAllowFocusChange doesn't work - I still want to prevent changing focus if validation fails, but it should be limited only to this particular tab. If control is going to lost focus as a result of switching to the other tab, it should be allowed.
It is hard to provide source code, but here is a sample project that explains the problem.
http://www.speedyshare.com/T49DR/SampleProject.zip
I have a Windows Form with 27 controls, but I need the tab key to cycle between only four of these controls. Every time the tab key is pressed, it should only move the focus between these 4 controls.
How do I do this?
Set the TabIndex of the controls you wish to navigate through. For the others, set TabStop to false.
This article describes how to set the tab index on Windows Forms controls.
http://msdn.microsoft.com/en-us/library/bd16a8cw(v=vs.90).aspx
According to that article, setting the TabStop property to false, on the controls that you want to be ignored by TAB, should achieve your objective.
For the 4 controls that you do want to be affected by pressing TAB, use the TaxbIndex property to set the values from 0 to 3.
I have a WinForm program. In one screen it has several ComboBoxes, TextBoxes, and Buttons. How can I make it so that when the user presses tab, it will go through the fields in sequential order. Meaning from top to bottom? Or we can say "In my defined order"? So, for example, it starts with TextBox1, and then when the user presses Tab, it will go to the next TextBox, and when Tab is pressed again, will go to Button1, etc. etc.
Not sure if it’s possible, but for some reason pressing tab jumps all over the place. What defines the "tab"? what logic does it use to make it jump to the next field?
The TabIndex property of each control defines the tab order within a container (Form, GroupBox, Panel, etc). If you are working in the Visual Studio Designer, you can use the View --> Tab Order menu item to view/edit the tab sequence.
Each control has a property called TabIndex. When a user presses the Tab key, Windows cycles through each control in the order of the tab index. If two controls have the same TabIndex, they are selected in the order in which the controls were added to the Forms Controls collection.
It is also worth noting that if you have a control that can contain a group of controls within it's Controls collection (i.e. GroupBox), the tab processing engine will give tab focus to the parent control and then cycle through all of the internal controls, in their internal sorted order. This means that all child TabIndex values can be maintained independently of all other controls that are in the same collection as the parent control.
You need to use the TabIndex propert on the control. Be aware that according to the documentation, you must set the TabStop property to true in order for it to be included in the tab ordering.
You need to define the TabIndex of each control. There is a button in the designer toolbar to make it easier (I don't remember the name, but you should find it easily... it's probably something like "Tab Order"). Click this button, then click each control on the form in turn.
Each control has a property called "TabIndex". These will by default just be incrementing as you create items. You can set these manually.
Set the TabIndex: http://msdn.microsoft.com/en-us/library/aa984423%28v=vs.71%29.aspx
Please check out TabIndex property.
In my C# WinForms program, I have a form that has only a single Button control on it.
By default, that Button control receives the focus on the form. But I don't want the Button to ever get focus.
Is there a solution, even one that would require a call to an unmanaged API?
In your form Load event you can set the focus on some other control.
If you do not want the control to ever get focus via keyboard, you can also set its TabStop property to false.
If you want that the button should not have focus when you open the form, then you need to correct the TabIndex property. The TabIndex property has an integer as value which specifies the order in which the controls get focus when tab key is pressed. If the control has TabIndex set to 0 then change it to some other value.
Check the documentation for TabIndex and TabStop properties on MSDN.
Use TabStop property of button
button1.TabStop = false;