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IQueryable OfType where T is a runtime Type

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旧巷少年郎
旧巷少年郎 2020-12-14 01:52

I need to be able to get something similar to the following to work:

Type type = ??? // something decided at runtime with .GetType or typeof;
object[] entity
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  • 夕颜
    夕颜 (楼主)
    2020-12-14 02:41

    Looks like you’ll need to use Reflection here...

    public static IEnumerable DyamicOfType(
        this IQueryable input, Type type)
{
    var ofType = typeof(Queryable).GetMethod("OfType",
                     BindingFlags.Static | BindingFlags.Public);
    var ofTypeT = ofType.MakeGenericMethod(type);
    return (IEnumerable) ofTypeT.Invoke(null, new object[] { input });
}

Type type = // ...;
var entityList = context.Resources.DynamicOfType(type).ToList();

    
    
             
    
                                                        
    
            
            
    
              
                
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