Question
Related Subjects
Create Expression<Func<T, TKey>>
dynamically
I looked online, but every example had an explanation.Expression<Func<
How can I construct a page dynamically?Func<T, TKey>
from T
?
Thanks
Edit 1)
The T
enter my code for instance, I want to sort my list using in runtimeName
. Now, how can I do this?Func<T, TKey> = o=>o.Name;
Edit 2)
Please think about this:
public abstract class MyClass<T> where T : class
{
public virtual List<T> GetAll(Expression<Func<T, bool>> exp, string orderByProperty)
{
repository.Get(exp).OrderBy(?);
}
}
The issue is to develop aFunc<T, TKey>
to be used inOrderBy
argument. How can I use to sort the list?Name
property?
Thanks
Popular Answer
According to the abstract class' description, adding the key are to the generic parameters is required in order to utilize it.
Simple order-passing via function example.
public abstract class MyClass<T, TKey> where T : class {
public virtual List<T> GetAll(
Expression<Func<T, bool>> exp,
Func<T, TKey> keySelector = null
) {
var query = repository.Get(exp);
if(orderBy != null) {
return query.OrderBy(keySelector).ToList();
return query.ToList();
}
}
The class might then be derived and have a default key type.
The following, for instance, utilizes astring
nonetheless, that may have very well been anint
, Guid
, etc..
public abstract class MyClass<T> : MyClass<T, string> where T : class {
}
But ultimately, in order to utilize it, you must be aware of the arrangement by kind.
...GetAll(_ => _.SomeProperty == someValue, o => o.Name);
Related Questions
Licensed under: CC-BY-SA with attribution
Not affiliated with Stack Overflow