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SqlException from Entity Framework - New transaction is not allowed because there are other threads
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IList<Client> clientList = from a in _dbFeed.Client.Include("Auto") select a;
foreach (RivWorks.Model.NegotiationAutos.Client client in clientList)
{
var companyFeedDetailList = from a in _dbRiv.AutoNegotiationDetails where a.ClientID == client.ClientID select a;
// ...
}
...
onKeyPress Vs. onKeyUp and onKeyDown
...tabbing.
Scenario:
The user types 12345 into an input element.
The user selects the text 12345.
The user types the letter A.
When the keypress event fires after entering the letter A, the text box now contains only the letter A.
But:
Field.val() is 12345.
$Field.val().length is 5
The user se...
Warning: The Copy Bundle Resources build phase contains this target's Info.plist file
...Resources build phase or make it a target member.
To resolve this warning, select your Info.plist from the Copy Bundle Resource build phase as shown in Figure 1, then click the Remove (–) button to delete it from the phase.
...
Which HTML elements can receive focus?
...ich the only elements that have a focus() method are
HTMLInputElement, HTMLSelectElement, HTMLTextAreaElement and HTMLAnchorElement. This notably omits HTMLButtonElement and HTMLAreaElement.
Today's browsers define focus() on HTMLElement, but an element won't actually take focus unless it's one of:
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Android selector & text color
...or/button_dark_text.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:color="#000000" /> <!-- pressed -->
<item android:state_focused="true"
...
Default template arguments for function templates
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On Windows, with all versions of Visual Studio you can convert this error (C4519) to a warning or disable it like so:
#ifdef _MSC_VER
#pragma warning(1 : 4519) // convert error C4519 to warning
// #pragma warning(disable : 4519) // disable error C4519
#endif
See more details ...
T-SQL - function with default parameters
...
you have to call it like this
SELECT dbo.CheckIfSFExists(23, default)
From Technet:
When a parameter of the function has a default value, the keyword
DEFAULT must be specified when the function is called in order to
retrieve the default value. T...
Covariance and contravariance real world example
...) // "Melman"
};
PrintLifeForms(myGiraffes); // Compile Error!
cannot convert from 'System.Collections.Generic.List<Giraffe>' to 'System.Collections.Generic.IList<LifeForm>'
Why? Because the generic parameter IList<LifeForm> is not covariant -
IList<T> is invariant, s...
Sort points in clockwise order?
...y done in any language. The formulas can be found in this section.
After converting to polar coordinates, just sort by the angle, theta.
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Creating a copy of a database in PostgreSQL [closed]
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To disconnect all other users from the database, you can use this query:
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity
WHERE pg_stat_activity.datname = 'originaldb' AND pid <> pg_backend_pid();
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