/// <summary>
/// 从目录中找到所有的.Net程序集，并遍历所有程序集找到所有拥有指定的定制特性的类型
/// </summary>
/// <param name="appStartPath">The app start path.</param>
/// <param name="targetAttribute">指定接口的类型</param>
/// <returns></returns>
public static Type[] FindAttributesByDirectory(string appStartPath, Type targetAttribute)
{
var typeList = new List <Type>();
Assembly[] assArray = UtilAssembly.SearchAssemblyByDirectory(appStartPath);
if (UtilCollection.IsNullOrEmpty(assArray))
{
return(typeList.ToArray());
}
Parallel.ForEach(assArray, ass =>
{
Type[] types = null;
try
{
types = ass.GetTypes();
}
catch (Exception e)
{
Debug.Fail(string.Format("程序集获取Type失败。{0}", e.Message));
}
if (!UtilCollection.IsNullOrEmpty(types))
{
typeList.AddRange(from type in types
let attrs = type.GetCustomAttributes(true)
where attrs.Any(attr => attr.GetType() == targetAttribute)
select type);
}
});
return(typeList.ToArray());
}
/// <summary>
/// 从目录中找到所有的.Net程序集，并遍历所有程序集找到所有指定的定制特性
/// </summary>
/// <param name="appStartPath">The app start path.</param>
/// <returns></returns>
public static T[] FindAttributes <T>(string appStartPath) where T : Attribute
{
var typeList = new List <T>();
Assembly[] assArray = UtilAssembly.SearchAssemblyByDirectory(appStartPath);
if (UtilCollection.IsNullOrEmpty(assArray))
{
return(typeList.ToArray());
}
Parallel.ForEach(assArray, ass =>
{
Type[] types = null;
try
{
types = ass.GetTypes();
}
catch (Exception e)
{
Debug.Fail(string.Format("Assembly.GetTypes()异常:{0}", e.Message));
}
if (!UtilCollection.IsNullOrEmpty(types))
{
Parallel.ForEach(types, type =>
{
object[] attrs = type.GetCustomAttributes(true);
typeList.AddRange(attrs.Where(attr => attr.GetType() == typeof(T)).Cast <T>());
});
}
});
return(typeList.ToArray());
}
/// <summary>
/// 从程序集中获得元属性
/// </summary>
/// <param name="assemblies">程序集，如果为null，则从当前应用程序域中获取所载入的所有程序集</param>
/// <returns>找到的元属性的数组</returns>
public static T[] GetAttributeFromAssembly <T>(Assembly[] assemblies) where T : Attribute
{
var list = new List <T>();
if (assemblies == null)
{
assemblies = UtilAssembly.SearchAssemblyByDirectory(AppDomain.CurrentDomain.BaseDirectory);
}
Parallel.ForEach(assemblies, assembly =>
{
var attributes = (T[])assembly.GetCustomAttributes(typeof(T), false);
if (attributes.Length > 0)
{
list.AddRange(attributes);
}
});
return(list.ToArray());
}
/// <summary>从指定的目录找到所有Type，并返回Type全名为Key，Type为Value的Map
/// </summary>
/// <param name="path">指定的目录.</param>
/// <returns></returns>
public static Dictionary <string, Type> FindTypeMap(string path)
{
if (_AppTypes.ContainsKey(path))
{
return(_AppTypes[path]);
}
if (!Directory.Exists(path))
{
throw new DirectoryNotFoundException(path + "目录不存在。");
}
var typeMap = new Dictionary <string, Type>();
var assemblys = UtilAssembly.SearchAssemblyByDirectory(path);
foreach (var assembly in assemblys)
{
Type[] types;
try
{
types = assembly.GetTypes();
}
catch (Exception e)
{
continue;
}
foreach (var type in types)
{
if (type.FullName == null)
{
continue;
}
if (!typeMap.ContainsKey(type.FullName))
{
typeMap.Add(type.FullName, type);
}
}
}
return(typeMap);
}
/// <summary>
/// 从目录中找到所有的.Net程序集，并遍历所有程序集找到所有指定的定制特性
/// </summary>
/// <param name="appStartPath">The app start path.</param>
/// <returns></returns>
public static List <Tuple <T, Type> > FindAttributeMap <T>(string appStartPath) where T : Attribute
{
var list = new List <Tuple <T, Type> >();
Assembly[] assArray = UtilAssembly.SearchAssemblyByDirectory(appStartPath);
if (UtilCollection.IsNullOrEmpty(assArray))
{
return(list);
}
Parallel.ForEach(assArray, ass =>
{
Type[] types = null;
try
{
types = ass.GetTypes();
}
catch (Exception e)
{
Debug.Fail(string.Format("程序集获取Type失败。{0}", e.Message));
}
if (!UtilCollection.IsNullOrEmpty(types))
{
Parallel.ForEach(types, type =>
{
object[] attrs = type.GetCustomAttributes(true);
if (!UtilCollection.IsNullOrEmpty(attrs))
{
list.AddRange(from attr in attrs
where attr.GetType() == typeof(T)
select new Tuple <T, Type>((T)attr, type));
}
});
}
});
return(list);
}
