CODEWITHSUNDEEP
c#windowsreflection
Zaid Amir
Zaid Amir

Reputation: 4785

C# Casting an object returned from invocation and invoking a method on that object

I am trying to invoke a method that is within the returned class of another invoked method.

I am trying to call the GetConnectionCost() method from the ConnectionProfile class. The ConnectionProfile object was returned by Invoking the GetInternetConnectionProfile method from NetworkInformation class.

Below is my code so far:

using System.Reflection;

var t = Type.GetType("Windows.Networking.Connectivity.NetworkInformation, Windows, ContentType=WindowsRuntime");

var profile = t.GetTypeInfo().GetDeclaredMethod("GetInternetConnectionProfile").Invoke(null, null);

var cost = profile.GetTypeInfo().GetDeclaredMethod("GetConnectionCost").Invoke(null, null); //This does not work of course since profile is of type object.

I rarely use reflection in my code so I am not an expert in the matter but I am trying to find a way to case the profile object and invoke the GetConnectionCost method on it.

Any suggestions

Upvotes: 0

Views: 56

Answers (2)

Zaid Amir
Zaid Amir

Reputation: 4785

Found a solution:

var networkInfoType = Type.GetType("Windows.Networking.Connectivity.NetworkInformation, Windows, ContentType=WindowsRuntime");
            var profileType = Type.GetType("Windows.Networking.Connectivity.NetworkInformation, Windows, ContentType=WindowsRuntime");
            var profileObj = networkInfoType.GetTypeInfo().GetDeclaredMethod("GetInternetConnectionProfile").Invoke(null, null);
            dynamic profDyn = profileObj;
            var costObj = profDyn.GetConnectionCost();
            dynamic dynCost = costObj;

            var costType = (NetworkCostType)dynCost.NetworkCostType;
            if (costType == NetworkCostType.Unknown
                    || costType == NetworkCostType.Unrestricted)
            {
                //Connection cost is unknown/unrestricted
            }
            else
            {
                //Metered Network
            }

Upvotes: 0

Ashley Pillay
Ashley Pillay

Reputation: 888

GetInternetConnectionProfile is static, but GetConnectionCost is an instance method.

You need to pass an instance to Invoke

Try this:

var t = Type.GetType("Windows.Networking.Connectivity.NetworkInformation, Windows, ContentType=WindowsRuntime");
var profile = t.GetMethod("GetInternetConnectionProfile").Invoke(null, null);
var cost = profile.GetType().GetMethod("GetConnectionCost").Invoke(profile, null);

You will still get back an object.

You can cast it to dynamic

Upvotes: 1

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