NavigationParameters: Not possible to specify parent type as generic parameter T

[michaelmairegger]

Package info

• Prism version: newest public version

Repro steps

If I add a parameter of any custom type and want to retrieve the parameter by its parent type then an exception is thrown. This exception indicates that the type must implement IConvertible in order to be able to return a value. This is incorrect. Since the object added to NavigationParameters is an inheritor of the type I passed as generic type parameter there is no need to inherit from IConvertible. The value can immediately be returned

Error

public class Test : ICustomInterface{}

NavigationParameters np = new NavigationParameters ();
np.Add("Test", new Test());

np.GetValue<object>(); //this line is not possible
np.GetValue<ICustomInterface>(); //this line is not possible

Both lines results in:

System.InvalidCastException: Object must implement IConvertible

[brianlagunas]

Can you provide an example? I would hate to include a reflection call every time a command is executed. This will really suck for mobile platforms.

[michaelmairegger]

@brianlagunas I have updated the initial post. Unfortunately the <> brackets were not rendered in the final output.
The reflection call is not inside the commands. Should only be called when accessing NavigationParameters

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.