Question

I got a custom Type that as a couple of fields, and I’d like to only get Dependency Properties.

Here is the code that returns all properties :

propertyInfos = myType.GetProperties();

foreach (PropertyInfo propertyInfo in propertyInfos)
{
    Console.WriteLine(propertyInfo.Name);
}

I know I have to add something in parameter for GetProperties, somethg with BindingFlags.XXX but I check everything that is possible as XX and didn’t find something that sounds good to me…

Answer 1

Dependency properties are static fields of type DependencyProperty

static IEnumerable<FieldInfo> GetDependencyProperties(Type type)
{
    var dependencyProperties = type.GetFields(BindingFlags.Static | BindingFlags.Public)
                                   .Where(p => p.FieldType.Equals(typeof(DependencyProperty)));
    return dependencyProperties;
}

If you want to get dependency properties of parents of that control too then you can use the following method:

static IEnumerable<FieldInfo> GetDependencyProperties(Type type)
{
    var properties = type.GetFields(BindingFlags.Static | BindingFlags.Public)
                         .Where(f=>f.FieldType == typeof(DependencyProperty));
    if (type.BaseType != null)
        properties = properties.Union(GetDependencyProperties(type.BaseType));
    return properties;
}