我想创建一个类型的实例,但直到运行时我才知道类型。
如何获取构造函数所需的参数以在 WPF 窗口中向用户显示它们?
是否可以使用 Visual Studio 中的属性窗口之类的东西?
我想创建一个类型的实例,但直到运行时我才知道类型。
如何获取构造函数所需的参数以在 WPF 窗口中向用户显示它们?
是否可以使用 Visual Studio 中的属性窗口之类的东西?
看看ParameterInfo
可以从反射类型中获得的对象:
Type type = typeof(T);
ConstructorInfo[] constructors = type.GetConstructors();
// take one, for example the first:
var ctor = constructors.FirstOrDefault();
if (ctor != null)
{
ParameterInfo[] params = ctor.GetParameters();
foreach(var param in params)
{
Console.WriteLine(string.Format("Name {0}, Type {1}",
param.Name,
param.ParameterType.Name));
}
}
这是搜索 - http://www.bing.com/search?q=c%23+reflection+constructor+parameters - 最佳答案是带有示例的ConstructorInfo :
public class MyClass1
{
public MyClass1(int i){}
public static void Main()
{
try
{
Type myType = typeof(MyClass1);
Type[] types = new Type[1];
types[0] = typeof(int);
// Get the public instance constructor that takes an integer parameter.
ConstructorInfo constructorInfoObj = myType.GetConstructor(
BindingFlags.Instance | BindingFlags.Public, null,
CallingConventions.HasThis, types, null);
if(constructorInfoObj != null)
{
Console.WriteLine("The constructor of MyClass1 that is a public " +
"instance method and takes an integer as a parameter is: ");
Console.WriteLine(constructorInfoObj.ToString());
}
else
{
Console.WriteLine("The constructor of MyClass1 that is a public instance " +
"method and takes an integer as a parameter is not available.");
}
}
catch(Exception e) // stripped out the rest of excepitions...
{
Console.WriteLine("Exception: " + e.Message);
}
}
}