how to get all primitive type of an object

Question

I wanna have all properties of an object which have primitive type, and if the object has a relation to another class , I wanna have the primitive properties of this another

Answer 1

You need to keep track of types you've already checked.

public static List ProcessType(Type type)
{
    return ProcessType(type, new List());
}
public static List ProcessType(Type type, List processedTypes)
{
    // Keep track of results
    var result = new List();

    // Iterate properties of the type
    foreach (var property in type.GetProperties())
    {
        var propertyType = property.PropertyType;

        // If the property has a primitive type
        if (propertyType.IsPrimitive)
        {
            // add it to the results
            result.Add(property);
        }
        // If the property has a non-primitive type
        // and it has not been processed yet
        else if (!processedTypes.Contains(propertyType))
        {
            // Mark the property's type as already processed
            processedTypes.Add(propertyType);

            // Recursively processproperties of the property's type
            result.AddRange(ProcessType(propertyType, processedTypes));
        }
    }

    return result;
}