大约有 19,000 项符合查询结果（耗时：0.0316秒） [XML]
C# pattern to prevent an event handler hooked twice [duplicate]
...already added, this prevents multiple firing of the event
((System.Windows.Forms.WebBrowser)sender).Document.Click -= new System.Windows.Forms.HtmlElementEventHandler(testii);
((System.Windows.Forms.WebBrowser)sender).Document.Click += new System.Windows.Forms.HtmlElementEventHandler(testii);
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What is the maximum length of a valid email address?
... Mailbox element (i.e., the email address) has angle brackets around it to form a Path, which a maximum length of 254 characters to restrict the Path length to 256 characters or fewer.
The maximum length specified in RFC 5321 states:
The maximum total length of a reverse-path or forward-path is...
How to mark-up phone numbers?
...a phone number as callable link in an HTML document. I have read the microformats approach , and I know, that the tel: scheme would be standard, but is quite literally nowhere implemented.
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How to reshape data from long to wide format
... groups, v.names = the variables that will become multiple columns in wide format, timevar = the variable containing the values that will be appended to v.names in wide format, direction = wide, and sep = "_". Clear enough? ;)
– Brian D
Nov 17 '17 at 17:11
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Any way to select without causing locking in MySQL?
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MyISAM tables do not support transactions in any form. A transactional query will run on a MyISAM table, so the query you mention above will execute, but it has no effect.
– zombat
May 27 '09 at 22:15
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How to add images to README.md on GitHub?
... Yes. This is by far the easiest way unless you're worried about performance.I'd note that this is relative to the directory not the repo, so if you have 'myimage.png' in the same dir as 'about_pics.md' then the markup is:
– Rich
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Why and not taking font-family and font-size from body?
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By default, browsers render most form elements (textareas, text boxes, buttons, etc) using OS controls or browser controls. So most of the font properties are taken from the theme the OS is currently using.
You'll have to target the form elements themselves...
REST API - why use PUT DELETE POST GET?
...?output=json or ?output=html which would allow the accessor to decide what format the information should be encoded in.
After a bit of thinking about how to reasonably incorporate data typing into a REST API, I've concluded that the best way to specify the type of data explicitly would be via the a...
Select all DIV text with single mouse click
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Using a text area field, you could use this: (Via Google)
<form name="select_all">
<textarea name="text_area" rows="10" cols="80"
onClick="javascript:this.form.text_area.focus();this.form.text_area.select();">
Text Goes Here
</textarea>
</form&g...
What's so wrong about using GC.Collect()?
...
writing a client application and you
display a very large and complicated
form that has a lot of data associated
with it. Your user has just
interacted with this form potentially
creating some large objects... things
like XML documents, or a large DataSet
or two. When the form closes these
object...