大约有 40,000 项符合查询结果（耗时：0.0483秒） [XML]
What's the difference(s) between .ToList(), .AsEnumerable(), AsQueryable()?
...where condition will never be translated into SQL. AsEnumerable() followed by LINQ statements definitively cuts the connection with entity framework query provider.
I deliberately show this example because I've seen questions here where people for instance try to 'inject' Include capabilities into a...
Default text which won't be shown in drop-down list
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"display: none" is ignored by browsers that use device-native selects like Android and iOS. You must remove the option from DOM in select.focus and return it and select it in select.blur to make it work.
– Radek Pech
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Linq order by boolean
I've got a linq query that I want to order by f.bar, which is a string, but I also want to order it by f.foo, which is a boolean field, first. Like the query below.
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Why use String.Format? [duplicate]
...of + operators all specified in a single expression it will be converted, by the compiler, into a single call to string.Concat, and there will not be any intermediate strings created. Using a StringBuilder would in fact hurt performance, not help it, since Concat can create an internal buffer of e...
notifyDataSetChanged example
...rrayAdapter for custom GridView, I'm adding images as I get them from urls by calling adapter.add(dataReceived). This works fine adds data but why it's refreshing & going to top. I want to show items as they will get add without refreshing list. (What want to do is working with android's GridVie...
The cast to value type 'Int32' failed because the materialized value is null
...from u in context.User
join ch in context.CreditHistory on u.ID equals ch.UserID
where u.ID == userID
select (int?)ch.Amount).Sum() ?? 0;
This first casts to int? to tell the C# compiler that this expression can inde...
Android WebView: handling orientation changes
...onger works as stated in the docs
Original answer:
This can be handled by overrwriting onSaveInstanceState(Bundle outState) in your activity and calling saveState from the webview:
protected void onSaveInstanceState(Bundle outState) {
webView.saveState(outState);
}
Then recover th...
Get selected value in dropdown list using JavaScript
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If you have a select element that looks like this:
<select id="ddlViewBy">
<option value="1">test1</option>
<option value="2" selected="selected">test2</option>
<option value="3">test3</option>
</select>
Running this code:
var e =...
How to kill a process running on particular port in Linux?
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This fuser 8080/tcp will print you PID of process bound on that port.
And this fuser -k 8080/tcp will kill that process.
Works on Linux only. More universal is use of lsof -i4 (or 6 for IPv6).
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Can I use a min-height for table, tr or td?
..." id="td_0_0" class="readOnlyCell gContentSection">411978430-Intimate:Ruby:Small</td>
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