C#: Using reflection to get access to all fields within a class, returns error
can anyone help me?
I have some reflection code that i have written and it seems to work well but it gives me an error when trying to pass in "this" to the GetValue.
I am a little stuck, i think the problem is that i am running the reflection code in frmMain adn the AbCCompany is defined in another project but i have a refere开发者_如何学Cnce.
I get the error
Field 'AbcCompany' defined on type 'MyApp.Companies.Config' is not a field on the target object which is of type 'MyApp.frmMain'.
Here is the code..
var companies = MyIems.Companies.GetType().GetFields();
foreach (var list in companies )
{
List<CompanyBase> thisCompanyCollection = (List<CompanyBase>)list.GetValue(this);
foreach (var company in thisCompanyCollection )
{
Console.WriteLine();
}
}
EDIT
I forgot to mention that Inside "Companies" is lots of List where xxx is a class.. all classes inherit from CompanyBase. i.e AbcCompany
Instead of passing in this
to GetValue
you need to pass an instance of MyApp.Companies.Config
.
If you look at the documentation, you can see that the exception your getting is because the obj
parameter isn't of the type (or inherits from it) that the current field is declared on.
Assuming that MyApp.Companies.Config
has a parameterless constructor, the following should work:
var type = MyItems.Companies.GetType();
var instance = type.GetConstructor(System.Type.EmptyTypes).Invoke(null);
foreach(var list in type.GetFields())
{
List<CompanyBase> thisCompanyCollection = (List<CompanyBase>)list.GetValue(instance);
foreach(var company in thisCompanyCollection)
{
Console.WriteLine(company);
}
}
精彩评论