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Validation failed for one or more entities. See 'EntityValidationErrors' property for more details [
...now how to check the content of the validation errors. Visual Studio shows me that it's an array with 8 objects, so 8 validation errors.
Actually you should see the errors if you drill into that array in Visual studio during debug. But you can also catch the exception and then write out the errors...
Dealing with multiple Python versions and PIP?
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The current recommendation is to use python -m pip, where python is the version of Python you would like to use. This is the recommendation because it works across all versions of Python, and in all forms of virtualenv. For example:
# The sy...
How to get object size in memory? [duplicate]
I need to know how much bytes my object consumes in memory (in C#). for example how much my Hashtable , or SortedList , or List<String> .
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How to disable Google Chrome auto update?
Does anyone know how to disable Google Chrome for being automatic update itself, it cause my web application always change?
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Can't connect Nexus 4 to adb: unauthorized
...g option in the device. (if not working, try to unplug/plug the USB)
At some point, the device should show up a messagebox to ask you if you authorize the computer. After you click yes, the device is then authorized and the connection is hooked.
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
In order to make a simple game, I used a template that draws a canvas with bitmaps like this:
18 Answers
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How can I set the focus (and display the keyboard) on my EditText programmatically
I have a layout which contains some views like this:
13 Answers
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PHP how to get local IP of system
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From CLI
PHP < 5.3.0
$localIP = getHostByName(php_uname('n'));
PHP >= 5.3.0
$localIP = getHostByName(getHostName());
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Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
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This has been bothering me for quite some time also. Thanks!
– Jonatan Hedborg
Dec 23 '09 at 10:41
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Inspect hovered element in Chrome?
I am trying to view, through Chrome's developer tools, how tooltips are structured on a site. However, even when I am hovered over the item, when I "inspect element", nothing shows for the tooltip in the html. I know I can set the Style to :hover , but I still can't see the html or css of the toolt...