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LINQ's Distinct() on a particular property
I am playing with LINQ to learn about it, but I can't figure out how to use Distinct when I do not have a simple list (a simple list of integers is pretty easy to do, this is not the question). What I if want to use Distinct on a list of an Object on one or more properties of the object?
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Why use multiple columns as primary keys (composite primary key)
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Your understanding is correct.
You would do this in many cases. One example is in a relationship like OrderHeader and OrderDetail. The PK in OrderHeader might be OrderNumber. The PK in OrderDetail might be OrderNumber AND LineNumber. If...
Use “ENTER” key on softkeyboard instead of clicking button
...When I type the searched text, I'd like to use ENTER key on softkeyboard instead of search Button to activate search function.
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Log all queries in mysql
Is it possible for me to turn on audit logging on my mysql database?
10 Answers
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Query an XDocument for elements by name at any depth
...bject. I want to query for elements with a particular name at any depth using LINQ. When I use Descendants("element_name") , I only get elements that are direct children of the current level. What I'm looking for is the equivalent of "//element_name" in XPath...should I just use XPath , or is t...
How to check all checkboxes using jQuery?
...script for my application. I want to check all checkboxes but it isn't working correctly.
26 Answers
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How to get the index of an element in an IEnumerable?
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The whole point of getting things out as IEnumerable is so you can lazily iterate over the contents. As such, there isn't really a concept of an index. What you are doing really doesn't make a lot of sense for an IEnumerable. If you need...
HTML Input=“file” Accept Attribute File Type (CSV)
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Well this is embarrassing... I found the solution I was looking for and it couldn't be simpler. I used the following code to get the desired result. Hope this helps someone in the future. Thanks everyone for your help.
<input id="fileSelect" ...
What is the main purpose of setTag() getTag() methods of View?
What is the main purpose of such methods as setTag() and getTag() of View type objects?
7 Answers
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Deep copy of a dict in python
I would like to make a deep copy of a dict in python. Unfortunately the .deepcopy() method doesn't exist for the dict . How do I do that?
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