I have an excel-like table. The following picture represents a part of it (for clarification, I setted the text of the inputs to be their respective IDs):
There is a ContextMenu that is fired on right click (code here) in each one of the inputs.
Here is how I find all these input controls at once (I need to use this way because there are some more columns that I do not want to call the ContextMenu):
$('[id^="txtF_"],
[id^="txtP_"],
[id^="txtT_"],
[id^="txtE_"],
[id^="txtM_"]').contextMenu({ ....
This works nice, however, if one of the items is disabled, the browser menu shows up instead. What can I do to fire the custom ContextMenu even if the input control is disabled?
Related
I have the following case:
There are several list boxes where the user can select something, some text boxes to enter text and several buttons to execute commands.
If a button is not enabled (due to a wrong/missing selection in a list box and/or a wrong entry in a text field), I'd like to show the red error adorner around the elements that needs to be fixed.
I know how I can show the red border when a entry is not correct using Validation rules - but they are not applicable since the fact "is correct" depends on the command the user wants to execute. E.g. to add an element, there is no need for a selected element in a listbox, but if you want to delete one, there needs to be a selected one.
You should use an attached behavior on the button itself. Then, hook the MouseEnter and MouseLeave events for the button.
Then all you have to do (when the mouse enters and exits the button) is fill out the validation rules for each control you want to "turn on or off" for the validation box.
I have a ListPicker (from Telerik's Rad Controls suite) in PopUp Mode (with around 200 elements) with its visibility set to Collapsed. I want to open when it when I press a button, instead of when I press the control itself.
Basically I'm asking if there's any way of programatically opening a UI element in Windows Phone (something like Control.Open() in the code behind).
The context for my question is the following:
as you know, the selected item of a list picker is displayed in the page containing the control.
users can click on this item to activate the control.
I want to display only one of the properties in the page containing the control (for example MyObject.Name instead of the entire MyObject), but I can't do this because the SelectedItem and ItemsSource need to be of the same type.
I'm thinking of styling a button to look identical to the ListPicker's selected item.
I need to open the ListPicker programatically when I click on the button, I'll bind the button's text to MyObject.Name
Alternatively, I could just do a data template for the way the list picker is displayed, but I'm not convinced it's possible.
Found the answer. It seems Telerik's List Picker allows you to set both an ItemTemplate for displaying items in the actual page, and a PopupItemTemplate for displaying items when the list is expanded. Both are Data Templates, so you can use Binding for values.
Once I successfully validate user data in a TextBox (using TextChanged EventHandler), I'd like to programmatically tab to the next input control. I know I could hard code the name and do
Score2.Focus(Windows.UI.Xaml.FocusState.Keyboard);
but I've got 20 TextBox controls on the page page and I'd like to use the same EventHandler for all of them.
While it may be possible (iterate through the page's control inspecting their tab order and selecting the appopriate next control), I would recommend against it. It will irritate your user if they leave a text box to go back and correct a previous field but your app decides it knows better and gives focus to another field.
I've come across the strangest bug pertaining to DataGridViews in Windows Forms.
I have a TabControl, that is supposed to contain a docked DataGridView in each tab page. I thought it would be convenient that the grid is focused upon changing the tab page, so that the user could simply hover the mouse over the grid and start scrolling when he changes the page. So, I just put a grids[tabs.SelectedIndex].Focus() in the event handler for changing the tab page.
However, something really strange happened. In my test application, I have three tab pages. If I try scrolling the grid right after starting the application, it doesn't work; I have to click in the grid first. I was expecting this. However, if I change the tab page, I can't scroll in any of the other grids until I click, except for the first one!
So, if I switch pages to the second page, then back to the first, I can automatically scroll that grid without clicking, but if I then switch to the third, I have to click for the grid to focus.
I had a look at the CanFocus properties of the grids, and it seems that only the first grid has it set to True. They are all created programmatically, and all in the same way. I don't see why they would be different.
Any ideas?
Inactive tab pages have their Visible property set to false. The documentation for CanFocus says:
In order for a control to receive
input focus, the control must have a
handle assigned to it, and the Visible
and Enabled properties must both be
set to true for both the control and
all its parent controls
Well, I solved it. Stupid programming error on my part, I had grids[tabs.TabIndex].Focus() instead of grids[tabs.SelectedIndex].Focus().
Oh well.
I'm working on a custom user control that essentially displays a name value pair (name is on a black background, value on a white). I have my control displaying correctly, even showing up in Designer and on my build page.
What I'd like to do from here is have the ability to right click on the user control and have a menu come up that has a "Copy Value" option, that when selected will copy the value in the "value" part of the user control to the clipboard. What is the best method of approach?
I'm not sure where to start since most of the documentation on user controls I've found deals with displaying the control, not necessarily interacting with it. Additionally, since I'm still learning C#, I might have left out an important part of my problem in this question, so please point that out if it's the case.
I'm using Visual Studio 2008 (if that matters).
Examine the ContextMenu control and the ContextMenu property of other controls. By assigning a ContextMenu control to the ContextMeny property of another control, you will have the right-click->popup menu wiring done for you. Then you only need to implement the click event of the different menu items in the context menu.
Then you can use the Clipboard.SetText (as suggested by BFree) to set the desired value to the clipboard.
Add a ContextMenu to the control. The, hook into the MouseClick (or MouseDown, whichever works better) event and if it's a Right-Click, then call show on the ContextMenu (there are a few overloads, try to mess with them see which works best for you). Then, in the click event of your context menu, just call Clipboard.SetText(...) to set the value to the clipboard.