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What is a NullReferenceException, and how do I fix it?
...Bottom Line
You are trying to use something that is null (or Nothing in VB.NET). This means you either set it to null, or you never set it to anything at all.
Like anything else, null gets passed around. If it is null in method "A", it could be that method "B" passed a null to method "A".
null can h...
Listening for variable changes in JavaScript
...ead but now this effect is possible using accessors (getters and setters): https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Defining_getters_and_setters
You can define an object like this, in which aInternal represents the field a:
x = {
aInternal: 10,
aListen...
Case insensitive 'Contains(string)'
...
@Quartermeister - and BTW, I believe .NET 2 and .NET4 behave differently on this as .NET 4 always uses NORM_LINGUISTIC_CASING while .NET 2 did not (this flags has appeared with Windows Vista).
– Simon Mourier
Mar 23 '13 at 8...
How to display a Yes/No dialog box on Android?
...s question for a longer discussion between the differences in Android and .NET (as it relates to dialogs):
Dialogs / AlertDialogs: How to "block execution" while dialog is up (.NET-style)
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How to find out which fonts are referenced and which are embedded in a PDF document
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
What is the opposite of evt.preventDefault();
...alse;
and its opposite(standard) :
event.returnValue = true;
source:
https://developer.mozilla.org/en-US/docs/Web/API/Event/returnValue
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Reset Entity-Framework Migrations
...
Considering this still shows up when we search for EF in .NET Core, I'll post my answer here (Since it has haunted me a lot). Note that there are some subtleties with the EF 6 .NET version (No initial command, and you will need to delete "Snapshot" files)
(Tested in .NET Core 2.1)
...
Selecting and manipulating CSS pseudo-elements such as ::before and ::after using jQuery
...or: pointer;
}
p.special:before {
content: "bar";
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
Pros: Easy to implement with jQuery; quic...
How to create json by JavaScript for loop?
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How to disable the application pool idle time-out in IIS7?
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