/// <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);
}
/// <summary>
/// 转换字符串
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static String Format(this IPropertyObject obj, String sep = ",")
{
PropertyDescriptorCollection pdc = obj.GetPropertyDescriptorCollection();
if (pdc == null)
{
return("");
}
Comparison <PropertyDescriptor> comparison = (x, y) => x.xh - y.xh;
pdc.Sort(comparison);
StringBuilder str = new StringBuilder();
foreach (PropertyDescriptor pd in pdc)
{
if (str.ToString() != "")
{
str.Append(sep);
}
Object value = obj.GetValue <Object>(pd.name);
str.Append(ConvertUtils.ConvertTo <String>(value, pd.format));
}
return(str.ToString());
}
/// <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]);
}