C# Generics and Reflection

Question

i'm using linq. All my queries looks like var query = dc.GetTable<myType>().

I wish i could choose "myType" using a string parameter. I tried to create a Type object using reflection, but the compiler doesn't recognize Type objects as class definitions.

Any suggestions? Thanks

Darin Dimitrov · Accepted Answer · 2010-01-18 20:46:03Z

5

There's a GetTable(Type) extension method which does exactly what you are looking for:

var query = dc.GetTable(Type.GetType("namespace.type, assembly"));

answered Jan 18, 2010 at 20:46

Darin Dimitrov

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2 Comments

user253501 Over a year ago

It's a good aproach, but I'm designing an application in three layers. All of them use generic logic. I would like to customize the class of work by using text strings in the presentation layer, and that information is spreading to the persistence layer. Thanks

user24359 Over a year ago

@dalbornoz - Your persistence layer needs to know what table to load the data from. You can't avoid that.

Frederik Gheysels · Accepted Answer · 2010-01-18 20:43:24Z

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Why do you want that ? Using the generic method like you do now, gives you compile time checking support, whereas a string parameter not.

answered Jan 18, 2010 at 20:43

Frederik Gheysels

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Comments

Community · Accepted Answer · 2017-05-23 12:03:30Z

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You can create an query instance as a generic Table<> object, but it won't be recognized in compile time. see Using Type objects as Type Parameters for Generics in C#

edited May 23, 2017 at 12:03

CommunityBot

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answered Jan 19, 2010 at 19:57

Shuo

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