using System.Reflection; // for properties
private bool IsValidObject(object para_Obj)
{
    // Get the type of the object
    Type type = para_Obj.GetType();

    // Get all public properties of the object's type
    PropertyInfo[] properties = type.GetProperties();

    foreach (PropertyInfo property in properties)
    {
        // Get the name and value of each property
        string propertyName = property.Name;
        object propertyValue = property.GetValue(para_Obj);
        if (propertyValue is null)
        {
            Console.WriteLine($"NULL: {propertyName}: {propertyValue}");
        } else
        {
            Console.WriteLine($"OK: {propertyName}: {propertyValue}");
        }
    }
    return true;
}