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C# elegant way to check if a property's property is null
...rom b in a.PropertyB
from c in b.PropertyC
select c.Value;
This returns null, if any of the nullable properties are null; otherwise, the value of Value.
class A { public B PropertyB { get; set; } }
class B { public C PropertyC { get; set; } }
class C { public strin...
Get Enum from Description attribute [duplicate]
...ds = type.GetFields();
var field = fields
.SelectMany(f => f.GetCustomAttributes(
typeof(DescriptionAttribute), false), (
f, a) => new { Field = f, Att = a })
.Where(a => ((De...
What reference do I need to use Microsoft.Office.Interop.Excel in .NET?
...You can install by either right clicking on References in your project and selecting Manage NuGet packages... and searching for one of the packages listed below, or install using the Package Manager Console:
PM> Install-Package Microsoft.Office.Interop.Excel
Microsoft.Office.Interop.Excel
Micro...
SVN: Folder already under version control but not comitting?
...ol
After that you have to open your workspace directory in your explorer, select your project and resolve it via Tortoise
(Project -> Context Menu -> TortoiseSVN -> Resolve)
You will see the following message dialog:
"File list is empty"
Press cancel and refresh the project in Eclipse.
Y...
Unable to resolve host “” No address associated with hostname
...
Same for me! somehow Wifi and airplane mode can be selected so i only had to disable the airplane mode (i wasnt really connected to the internet-palmface)
– d1jhoni1b
Mar 18 '14 at 22:36
...
How to continue a Docker container which has exited
...docker ps -q -l). ;-) Naming can help to better control which container is selected. -l get the last, ok...
– Eric Platon
Feb 21 '14 at 9:01
...
Block Comments in a Shell Script
...ing to write active code to create passive code... just use good old block select mode and press #; what's the big issue with that?
– Rusty75
Feb 27 '17 at 15:37
...
How do I remove a file from the FileList
...
If you want to delete only several of the selected files: you can't. The File API Working Draft you linked to contains a note:
The HTMLInputElement interface
[HTML5] has a readonly FileList
attribute, […]
[emphasis mine]
Reading a bit of the HTML 5 Work...
event.preventDefault() vs. return false
... event handlers for parent elements). Default = browser code (links, text selection, etc.)
– Bob Stein
Jul 28 '13 at 14:49
5
...
How can I see the raw SQL queries Django is running?
...o-shell all executed queries will be printed
Ex.:
User.objects.get(pk=1)
SELECT "auth_user"."id",
"auth_user"."password",
"auth_user"."last_login",
"auth_user"."is_superuser",
"auth_user"."username",
"auth_user"."first_name",
"auth_user"."last_name",
...