WPF Combobox box keeps closing when mouse over the non selected item - c#

I have an Excel addin that uses some WPF / XAML to render a Combobox in a grid. When I click on the Combo it drops down the other items but when I mouse down to select the second option in the drop down it closes. I can select other items using the keyboard or mouse scroll wheel when the combo is closed.
The issue only happens on my machine or a HyperV machine hosted by that same machine. The exact version of the code works fine on a remote Azure VM. All 3 are Windows 10.

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devexpress dropdown list inaccessible on mobile issue

So currently I have a web app that works perfectly fine on my desktop, but when I access this web app through mobile using an iphone (desktop version in mobile), I noticed that devexpress is not handling my dropdown list correctly (Look at screenshot attached/link).
desktop version
mobile version
For mobile when I click the last row dropdown to enter a different item, the list of items does not show, it actually gets hidden underneath the grid system. I tried styling and using z-index but had no luck at all, but on the desktop version everything seems to work perfectly fine.
​I have attached images comparing the two, One is mobile and the other is for desktop. I am not sure why in the mobile my dropdown list gets hidden or doesn't show correctly.
NOTE**** this only happens for the dropdown list on the ​LAST ROW OF THE GRID SYSTEM.
I don't think this is a styling issue, I feel like its a devexpress issue. The class is also the dxeEditArea class on the dropdown box.
Thank you ​

WPF Menu Popup Placement

I have a UI design that I created to mimic the way that apps in Win10 look but in Win7 - 8. I created a Menu that drops down and has several buttons in it. When this drops down it's the height of the app itself. If the app happens to go behind the task bar the menu drop down opens up instead of down. Is there a way to change this behavior so that no matter where the app is located on a screen it will open down even if that means behind the taskbar.
Thanks

Double click in any listbox in windows applications

I am facing a weird issue while double click in windows 7 embedded OS.
Consider a listbox having several items and offers a double click functionality to open an item to show more details in separate window.
Here while performing the double click, one click was made on one item and another click on another item, finally the details window had opened for the second item.
the click is in normal speed only.
This is occurring in any application which has lists like "ListBox, ListView DataGrid".. any thing.
Is this a problem of Mouse, OS, WPF, winforms, C#, graphic driver ?
Please help.

How to open a comboBox on single click on textblock in windows 8.1?

I am currently migrating my Windows Phone App to Windows 8.1 App and there is requirement that when user tap on TextBlock, ComboBox should open. Initially comboBox is collapsed. I tried but what actually happens is, first the comboBox becomes visible on first tap and on second tap the comboBox opens. I did this in Windows Phone 8 using ListPicker, in ListPicker there was a method ListPicker.Open() using which it opened at single tap, but something similar is not available. Please can anyone suggest what can be done. I have created TextBlock and ComboBox dynamically.
You can set ComboBox.IsDropDownOpen property to true.
(I've just googled it, can not test it right now. Let me if it works)

What type of gestures or other controls do Windows Phone 8 apps typically use for deletion?

I'm an iOS developer who uses an Android device who has recently started Windows Phone 8 development. I have a LongListSelector in a Pivot control, and I want to give users the ability to delete items from the LongListSelector.
What type of gestures and other controls do Windows Phone 8 apps usually use to delete items?
On iOS it's typical to swipe to remove an item from a list (not applicable in this situation due to the Pivot) and on Android it's typical to long-press to show a delete button in a context menu (in addition to the swipe-to-remove also used in iOS).
Are there equivalent gestures or conventions used in Windows Phone 8 apps?
Context menu:
Hold on item
Show context menu with delete command
Tap delete command to remove item
http://msdn.microsoft.com/library/windows/apps/BR208693
Selection:
Tap left of item to multi-select items (show checkbox after tapping left)
Show delete button in application bar when in selection mode
Tap on delete button to remove items
Alternative: Button in application bar for selection mode / show selection checkboxes
http://msdn.microsoft.com/en-us/library/windowsphone/develop/ff431813(v=vs.105).aspx
What else?

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