获取作为lambda表达式传递的参数的PropertyInfo | 紧凑框架，C＃

Question

Say I have following Asset class:

class Asset
{
    public int Id { get; set; }
    public string Name { get; set; }
}

Now I want to write a method GetPropertyInfo(a=>a.Name); and this method gives me the PropertyInfo of Asset.Name. I should be able to call this method like:

EDIT Example Method Call

PropertyInfo propInfo = GetPropertyInfo(a=>a.Name);

I have a List<PropertyInfo> so I want to match a given lambda expression with those in my list.

if(Possible on Compact Framework 3.5 && using C#)
    How?
else
    Please Notify

Thanks.

Answer 1

This can be done under .NETCF 3.5.

private List<Asset> m_list;

private Asset[] GetPropertyInfo(string name) {
  var items = m_list.Where(a => a.Name == name);
  if (items != null) {
    return items.ToArray();
  } else {
    return null;
  }
}

You will, however, need to initialize the m_list and fill it with your data first.

UPDATE:

So, your list is of type PropertyInfo and you want a call to get the type that matches a particular Asset object.

If that is correct, you could simply edit the code above to be as follows:

private List<PropertyInfo> m_list;

private PropertyInfo GetPropertyInfo(Asset a) {
  return m_list.FirstOrDefault(x => x.Name == a.Name);
}

I am not sure how you are getting the List<PropertyInfo> , though. I was able to pull a single PropertyInfo object using the code below:

private PropertyInfo GetPropertyInfo() {
  var t = Type.GetType("System.Reflection.MemberInfo");
  return t.GetProperty("Name");
}

There was nothing useful in this item.