I have a Web API project that uses Entity Framework. I have an action api/account
that given an ID returns that account.
There is an additional parameter that can be provided which is what fields to be returned eg api/account?field=name
I'm trying to work out the best way of translating from this string input to Entity Framework. I know I can use .Select()
to only get certain columns but that takes in a Func
and the only way I can think of getting from the string to a Func
is by using Reflection. This seems like it will be a peformance hit if I have to do Reflection for every property passed in, is there a better way of doing this?
Thanks
You can use this library System.Linq.Dynamic from Nuget, and this query
var selectStatement = string.Format("new ({0},{1})", field1, field2);
var result = db.Users.Select(selectStatement).ToListAsync().Result;
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.