How to pass an enum value to the constructor of a class through reflection?

i have the class:

public enum ProviderType { SqlClient, OracleClient};

public class ExternalClass
{
    private string field1;
    private string field2;
    private string EnumsDependance;

    public ExternalClass(string p1, string p2, ProviderType type)
    {
        this.field1 = p1;
        this.field2 = p2;

        if (type == ProviderType.SqlClient)
        {
            this.EnumsDependance = "SQL TYPE";
        }
        else if (type == ProviderType.OracleClient)
        {
            this.EnumsDependance = "ORACLE TYPE";
        }
        else
        {
            this.EnumsDependance = "NO TYPE";
        }
    }
}

In my program I need to create an instance of this class using reflection, but must pass the constructor of this class the value of the enum, how should I do this?

The program is in a different project ExternalClass and ProviderType, and it must be read by reflection. Here is my sketch:

class Program
{
    static void Main(string[] args)
    {
        //dynamically load assembly from file ExternalDLL.dll
        Assembly assembly = Assembly.LoadFile(@"C:\temp\ExternalDLL.dll");

        //get type of class ProviderType (enum) from just loaded assembly
        Type providerType = assembly.GetType("ExternalDLL.ProviderType");

        //get type of class ExternalClass from just loaded assembly
        Type externalClassType = assembly.GetType("ExternalDLL.ExternalClass");

        //creating an instance of the class ExternalClass, using reflection
        //constructor -> ExternalClass(string p1, string p2, ProviderType type)
        object externalClassInstance = Activator.CreateInstance(externalClassType, new object[]{"param1", 
                                                                                                "param2",
                                                                                                "ENUM VALUE" //how should I pass the value?  
                                                                                                });
    }
}