How can I use dynamic linq to make the insert technique more flexible?
c# dynamic-linq entity-framework
Question
I want to write some entity into database but there are a lot of entities I like to write something generally for them now I know this :
using(var dbContext = new myEntity())
{
db.EntityName.AddToObject(newEntity);
db.SubmitChanges();
}
I dont know how I can change it to something like this : db.AddToObject("stringName") I just want to write a few code because I have many tables so I have many entities in my model.
It will be good for me write a method and call it by different names.
Accepted Answer
One simple way would be to encapsulate the insert method into a delegate and pass it to your code like this:
void InsertEntity<TEntity>(TEntity newEntity, Func<myEntity, TEntity> insertCallback) where TEntity : EntityObject
{
using(var dbContext = new myEntity())
{
insertCallback(dbContext, newEntity);
dbContext.SaveChanges();
}
}
After that, when inserting an item you'll need to supply the insert method (assuming you have an entity called Client) :
var client = new Client();
InsertEntity<Client>(client, (dbContext, entity) => dbContext.Client.AddToObject(entity));
Related Questions
Licensed under: CC-BY-SA with attribution
Not affiliated with Stack Overflow