Question

I have an object, RenderComponent, that has a property named Model that is of type StaticModel. When I get the PropertyInfo of my RenderComponent and then call GetValue() on it, it is giving me a TargetException, saying “Object does not match target type.”

I’ll write a small sample of code to give you the gist of what is failing. Here’s the hierarchy:

public class RenderComponent
{
    StaticModel Model;
}

public class StaticModel
{

}

And I’m essentially doing this:

RenderComponent renderComponent = new RenderComponent();
PropertyInfo[] props = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);

foreach (PropertyInfo info in props)
{
    // I get the exception here
    Object value = info.GetValue(renderComponent, null);
}

My program is of course much more complicated, but I still don’t see how it could be failing. I must be missing something simple.

I get the exception on this line:

info.GetValue(obj, null)

Where info is the PropertyInfo of StaticModel, and obj is an instantiated RenderComponent. When I stop at this exception and do a watch on obj, I can actual step through the hierarchy until I get to my StaticModel value, and it exists and has the data I would expect.

I’m sure if I took the small code sample I posted in this thread it would work fine, so it has to be something with how I’m calling it within my engine, I just don’t see how GetValue can fail when obj clearly has that value within it.

Here’s a screenshot of me debugging ‘obj’ and finding the StaticModel:

And here’s the error I get:

And here you can see the values of obj and info, as proof that my object instance I’m passing is a RenderComponent, and the PropertyInfo I’m calling GetValue on is a Static Model (which is a member of RenderComponent, as you can see in the first image:

Answer 1

sos00’s comment from the original question was the correct answer to this question. His comment was:

Why does obj (in last Watch screenshot) has Key & Value? isn’t supposed to be a RenderComponent ? I think you are passing a KeyValuePair instead of a RenderComponent instance