CODEWITHSUNDEEP
c#.netreflectioncasting
Doan Cuong
Doan Cuong

Reputation: 2614

Convert object to IEnumerable in .NET 2.0

I'm writting generic validate function. It will use reflection to navigate through properties of an object and validate them. But I got a problem with collection property. I can determine if it's an array or generic but can not cast it in order to loop throught its entities.

private static bool Validate(object model)
{
    if (model.GetType().IsGenericType || model.GetType().IsArray)
    {
        //I want to convert model to IEnumerable here in order to loop throught it
        //It seems that .NET 2.0 doesn't allow me to cast by using
        IEnumerable lst = model as IEnumerable;
        //or
        IEnumerable lst = (IEnumerable) model;
    }
}

UPDATE:

Silly me, turned out that using 

IEnumerable lst = model as IEnumerable;

work perfectly. The problem I got is that by switching from .NET 4.0 to .NET 2.0, I stuck in a conclusion that .NET 2.0 doesn't support direct cast to IEnumerable without provide a specific type and I haven't noticed that System.Collection hasn't been imported. I feel like an idiot now.

P/S: sorry you guys for the waste of time

Upvotes: 2

Views: 719

Answers (1)

Christoph Fink
Christoph Fink

Reputation: 23113

IEnumerable lst = model as IEnumerable;
if(lst != null)
{
    //loop
}

This should work if the model implements IEnumerable.

The following would throw an invalid cast exception:

IEnumerable lst = (IEnumerable) model;

Upvotes: 2

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