大约有 15,400 项符合查询结果（耗时：0.0287秒） [XML]
Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
...s. That's why these properties should be marked as virtual - EF creates proxy class for your entity and overrides navigation properties to allow lazy-loading. E.g. if you have this entity:
public class MemberLoan
{
public string LoandProviderCode { get; set; }
public virtual Membership Member...
How to use bootstrap-theme.css with bootstrap 3?
...hat there is a separate css file for theme. How to make use of it? Please explain?
6 Answers
...
How do you avoid over-populating the PATH Environment Variable in Windows?
I would like to know what are the approaches that you use to manage the executables in your system. For example I have almost everything accessible through the command line, but now I come to the limit of the path string, so i can't add any more dir.
...
C# Interfaces. Implicit implementation versus Explicit implementation
What are the differences in implementing interfaces implicitly and explicitly in C#?
12 Answers
...
What unique features does Firebug have that are not built-in to Firefox?
I just cleaned my Firefox addons and wondered:
8 Answers
8
...
Why use the params keyword?
...
The sum with a delegate, though, does increase the complexity of the compiled code, which could potentially be less performant. Not really relevant in this particular situation, as it would not result in any closures, but it's worth knowing what the compiler's actually doing to ma...
Casting a variable using a Type variable
...
Here is an example of a cast and a convert:
using System;
public T CastObject<T>(object input) {
return (T) input;
}
public T ConvertObject<T>(object input) {
return (T) Convert.ChangeType(input, typeof(T));
...
How do I stop Entity Framework from trying to save/insert child objects?
...your database.
Option 2)
Set the child objects as detached from the context using the following code
context.Entry(yourObject).State = EntityState.Detached
Note that you can not detach a List/Collection. You will have to loop over your list and detach each item in your list like so
foreach (...
How to decorate a class?
...s created. You can, at that time, sub out the constructor for a new one.
Example:
def substitute_init(self, id, *args, **kwargs):
pass
class FooMeta(type):
def __new__(cls, name, bases, attrs):
attrs['__init__'] = substitute_init
return super(FooMeta, cls).__new__(cls, na...
LINQ OrderBy versus ThenBy
Can anyone explain what the difference is between:
4 Answers
4
...