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How can I clear event subscriptions in C#?
...ou reference the event.
See my article on events and delegates for more information.
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How to upload, display and save images using node.js and express [closed]
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First of all, you should make an HTML form containing a file input element. You also need to set the form's enctype attribute to multipart/form-data:
<form method="post" enctype="multipart/form-data" action="/upload">
<input type="file" name="file"&g...
Rails: fields_for with index?
...gt;
From:
http://railsapi.com/doc/rails-v3.0.4/classes/ActionView/Helpers/FormHelper.html#M006456
It’s also possible to specify the
instance to be used:
<%= form_for @person do |person_form| %>
...
<% @person.projects.each do |project| %>
<% if project.active? %&g...
What is a regular expression for a MAC Address?
In this format:
21 Answers
21
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In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
In a Django form, how do I make a field read-only (or disabled)?
26 Answers
26
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Django ModelForm: What is save(commit=False) used for?
Why would I ever use save(commit=False) instead of just creating a form object from the ModelForm subclass and running is_valid() to validate both the form and model?
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How to create an HTML button that acts like a link?
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HTML
The plain HTML way is to put it in a <form> wherein you specify the desired target URL in the action attribute.
<form action="https://google.com">
<input type="submit" value="Go to Google" />
</form>
If necessary, set CSS display: inli...
How to remove the focus from a TextBox in WinForms?
...nt the [Tab] key to take it next.
Also note that you cannot set it to the Form. Container controls like Form and Panel will pass the Focus on to their first child control. Which could be the TextBox you wanted it to move away from.
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Prompt Dialog in Windows Forms
I am using System.Windows.Forms but strangely enough don't have the ability to create them.
11 Answers
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Ways to implement data versioning in MongoDB
... whatever) that I use to access my data. Generally these objects have some form of history, so that you can easily override the save() method to make this change at the same time.
UPDATE: 2015-10
It looks like there is now a spec for handling JSON diffs. This seems like a more robust way to store ...