/// <summary>
/// 注册类属性
/// </summary>
/// <param name="obj"></param>
/// <param name="pds"></param>
public static void RegisteProperties(this IPropertyObject obj, PropertyDescriptorCollection pds = null)
{
if (typeProperties.ContainsKey(obj.GetType()))
{
return;
}
if (pds == null || pds.Count <= 0)
{
PropertiesAttribute attr = obj.GetType().FindAttribute <PropertiesAttribute>(false);
if (attr == null || attr.items == null || attr.items.Length <= 0)
{
return;
}
pds = new PropertyDescriptorCollection();
pds.AddRange(attr.items);
}
PropertyDescriptorCollection pdc = new PropertyDescriptorCollection();
pdc.AddRange(pds);
typeProperties[obj.GetType()] = pdc;
if (!objectPropertiesValues.ContainsKey(obj))
{
objectPropertiesValues[obj] = new Dictionary <PropertyDescriptor, object>();
}
}
/// <summary>
/// 获取属性集
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static PropertyDescriptorCollection GetPropertyDescriptorCollection(this IPropertyObject obj)
{
if (typeProperties.ContainsKey(obj.GetType()))
{
return(typeProperties[obj.GetType()]);
}
return(null);
}
/// <summary>
/// 修改值
/// </summary>
/// <param name="obj"></param>
/// <param name="propName"></param>
/// <param name="value"></param>
public static void SetValue(this IPropertyObject obj, String propName, Object value, bool throwException = false)
{
if (obj == null)
{
return;
}
//propName是否是普通成员
MemberInfo member = obj.GetType().FindMember(propName);
if (member != null)
{
member.SetValue(obj, value);
return;
}
//obj的类型的属性是否已经注册
PropertyDescriptorCollection pdc = obj.GetPropertyDescriptorCollection();
if (pdc == null)
{
RegisteProperties(obj);
}
pdc = obj.GetPropertyDescriptorCollection();
//没有可以注册的属性
if (pdc == null)
{
if (throwException)
{
throw new Exception("类型" + obj.GetType().Name + "没有可以注册的属性 ");
}
else
{
return;
}
}
PropertyDescriptor pd = pdc.Get(propName);
int index = pdc.IndexOf(propName);
if (index < 0)//属性名不存在
{
if (throwException)
{
throw new Exception("属性名不存在:" + propName);
}
else
{
return;
}
}
if (!objectPropertiesValues.ContainsKey(obj))
{
objectPropertiesValues[obj] = new Dictionary <PropertyDescriptor, object>();
}
Dictionary <PropertyDescriptor, object> values = objectPropertiesValues[obj];
values.SetValue(pd, value);
}
/// <summary>
/// 修改缺省值
/// </summary>
/// <param name="obj"></param>
/// <param name="value"></param>
public static void SetDefaultValue(this IPropertyObject obj, Object value, bool throwException)
{
PropertyDescriptorCollection pdc = obj.GetPropertyDescriptorCollection();
if (pdc == null)
{
RegisteProperties(obj);
}
pdc = obj.GetPropertyDescriptorCollection();
//没有可以注册的属性
if (pdc == null)
{
if (throwException)
{
throw new Exception("类型" + obj.GetType().Name + "没有可以注册的属性 ");
}
else
{
return;
}
}
PropertyDescriptor pd = pdc.GetDefault();
if (pd == null)
{
if (throwException)
{
throw new Exception("类型" + obj.GetType().Name + "没有缺省属性");
}
else
{
return;
}
}
int index = pdc.IndexOf(pd);
if (index < 0)
{
return;
}
if (!objectPropertiesValues.ContainsKey(obj))
{
objectPropertiesValues[obj] = new Dictionary <PropertyDescriptor, object>();
}
Dictionary <PropertyDescriptor, object> values = objectPropertiesValues[obj];
values.SetValue(pd, value);
}
public static Dictionary <string, ObjectProperty> GetProperties(IPropertyObject obj)
{
var properties = TypeDescriptor.GetProperties(obj.GetType()).Cast <PropertyDescriptor>();
Dictionary <string, ObjectProperty> dictionary = new Dictionary <string, ObjectProperty>();
foreach (var property in properties)
{
dictionary.Add(property.Name.ToLowerInvariant(), new ObjectProperty(property, obj));
}
return(dictionary);
}
public static Dictionary <string, ObjectProperty> InitProperties(IPropertyObject obj, XElement element)
{
var properties = TypeDescriptor.GetProperties(obj.GetType()).Cast <PropertyDescriptor>();
Dictionary <string, ObjectProperty> dictionary = new Dictionary <string, ObjectProperty>();
foreach (var property in properties)
{
ObjectProperty objProperty = new ObjectProperty(property, obj);
dictionary.Add(property.Name.ToLowerInvariant(), objProperty);
//set the value of the property to the default value if there is one
foreach (var ini in property.Attributes.OfType <HasDefaultValue>())
{
objProperty.TrySetValue(ini.defaultValue);
break;
}
}
if (element != null)
{
//go through all the attributes in the xml element
//and set the value of the matching property if it is initializable
foreach (XAttribute attribute in element.Attributes())
{
ObjectProperty property = null;
if (!dictionary.TryGetValue(attribute.Name.ToString().ToLowerInvariant(), out property))
{
continue;
}
if (!property.Attributes.OfType <HasDefaultValue>().Any())
{
continue;
}
property.TrySetValue(attribute.Value);
}
}
return(dictionary);
}
/// <summary>
/// 取值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="obj"></param>
/// <param name="propName"></param>
/// <returns></returns>
public static T GetValue <T>(this IPropertyObject obj, String propName = "", bool throwException = false)
{
if (propName == "" || propName == null)
{
propName = DEFAULT_PROP;
}
//如果propName是普通成员，则直接返回成员值
MemberInfo member = obj.GetType().FindMember(propName);
if (member != null)
{
return(member.FindValue <T>(obj));
}
//obj的类型的属性是否已经注册
PropertyDescriptorCollection pdc = obj.GetPropertyDescriptorCollection();
if (pdc == null)
{
RegisteProperties(obj);
}
pdc = obj.GetPropertyDescriptorCollection();
//没有可以注册的属性
if (pdc == null)
{
if (throwException)
{
throw new Exception("类型" + obj.GetType().Name + "没有可以注册的属性 ");
}
else
{
return(default(T));
}
}
PropertyDescriptor pd = pdc.Get(propName);
int index = pdc.IndexOf(propName);
if (index < 0)//属性名不存在
{
if (throwException)
{
throw new Exception("属性名不存在:" + propName);
}
else
{
return(default(T));
}
}
if (!objectPropertiesValues.ContainsKey(obj))
{
//objectPropertiesValues[obj] = new ConcurrentDictionary<PropertyDescriptor, object>();
objectPropertiesValues[obj] = new Dictionary <PropertyDescriptor, object>();
}
Dictionary <PropertyDescriptor, object> values = objectPropertiesValues[obj];
if (!values.ContainsKey(pd))
{
return(default(T));
}
return((T)values[pd]);
}