大约有 47,000 项符合查询结果（耗时：0.0507秒） [XML]
SqlException from Entity Framework - New transaction is not allowed because there are other threads
...much pulling out of hair I discovered that the foreach loops were the culprits. What needs to happen is to call EF but return it into an IList<T> of that target type then loop on the IList<T>.
Example:
IList<Client> clientList = from a in _dbFeed.Client.Include("Auto") select a;...
Response.Redirect with POST instead of Get?
...a form submission and save some data, then redirect the user to a page offsite, but in redirecting, we need to "submit" a form with POST, not GET.
...
What is the best way to detect a mobile device?
...
Editor's note: user agent detection is not a recommended technique for modern web apps. See the comments below this answer for confirmation of this fact. It is suggested to use one of the other answers using feature detection a...
What is the meaning of the prefix N in T-SQL statements and when should I use it?
...
It's declaring the string as nvarchar data type, rather than varchar
You may have seen Transact-SQL code that passes strings around using
an N prefix. This denotes that the subsequent string is in Unicode
(the N actua...
How to display request headers with command line curl
...esponse header by using -D option, but I want to see what request header it is sending. How can I do that?
9 Answers
...
Find nearest latitude/longitude with an SQL query
I have latitude and longitude and I want to pull the record from the database, which has nearest latitude and longitude by the distance, if that distance gets longer than specified one, then don't retrieve it.
...
How do I force Postgres to use a particular index?
How do I force Postgres to use an index when it would otherwise insist on doing a sequential scan?
6 Answers
...
When NOT to use yield (return) [duplicate]
There are several useful questions here on SO about the benefits of yield return . For example,
11 Answers
...
How do I break out of a loop in Perl?
...
Oh, I found it. You use last instead of break
for my $entry (@array){
if ($string eq "text"){
last;
}
}
share
|
imp...
How does Chrome's “Request Desktop Site” option work?
For iOS google chrome, when a user hits the "Request desktop site" button what does the browser do to try to bring up a desktop site? I imagine some sort of header on the request that sites are looking for, or something similar?
...