我正在尝试创建一个递归例程,它将检索指定对象(在 .NET 3.5 中)下的所有成员的 PropertyInfos。直接成员的一切都正常,但它还需要解析嵌套类(及其嵌套类等)。
我不明白如何处理解析嵌套类的部分。这部分代码你会怎么写呢?
public class ObjectWalkerEntity
{
public object Value { get; set; }
public PropertyInfo PropertyInfo { get; set; }
}
public static class ObjectWalker
{
// This will be the returned object
static List<ObjectWalkerEntity> objectList = new List<ObjectWalkerEntity>();
public static List<ObjectWalkerEntity> Walk(object o)
{
objectList.Clear();
processObject(o);
return objectList;
}
private static void processObject(object o)
{
if (o == null)
{
return;
}
Type t = o.GetType();
foreach (PropertyInfo pi in t.GetProperties())
{
if (isGeneric(pi.PropertyType))
{
// Add generic object
ObjectWalkerEntity obj = new ObjectWalkerEntity();
obj.PropertyInfo = pi;
obj.Value = pi.GetValue(o, null);
objectList.Add(obj);
}
else
{
////// TODO: Find a way to parse the members of the subclass...
// Parse each member of the non-generic object
foreach (Object item in pi.PropertyType)
{
processObject(item);
}
}
}
return;
}
private static bool isGeneric(Type type)
{
return
Extensions.IsSubclassOfRawGeneric(type, typeof(bool)) ||
Extensions.IsSubclassOfRawGeneric(type, typeof(string)) ||
Extensions.IsSubclassOfRawGeneric(type, typeof(int)) ||
Extensions.IsSubclassOfRawGeneric(type, typeof(UInt16)) ||
Extensions.IsSubclassOfRawGeneric(type, typeof(UInt32)) ||
Extensions.IsSubclassOfRawGeneric(type, typeof(UInt64)) ||
Extensions.IsSubclassOfRawGeneric(type, typeof(DateTime));
}
Edit:我采纳了 Harlam 的一些建议,并提出了一个可行的解决方案。这可以处理嵌套类和列表。
我已将之前的 propertyinfo 循环替换为以下内容
foreach (PropertyInfo pi in t.GetProperties())
{
if (isGeneric(pi.PropertyType))
{
// Add generic object
ObjectWalkerEntity obj = new ObjectWalkerEntity();
obj.PropertyInfo = pi;
obj.Value = pi.GetValue(o, null);
objectList.Add(obj);
}
else if (isList(pi.PropertyType))
{
// Parse the list
var list = (IList)pi.GetValue(o, null);
foreach (object item in list)
{
processObject(item);
}
}
else
{
// Parse each member of the non-generic object
object value = pi.GetValue(o, null);
processObject(value);
}
}
我还添加了一个新的检查来查看某些内容是否是列表。
private static bool isList(Type type)
{
return
IsSubclassOfRawGeneric(type, typeof(List<>));
}
谢谢您的帮助!