foreach (var filter in filters)
{
var filterType = typeof(Filters);
var method = filterType.GetMethod(filter, BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Static);
if (method != null)
{
var parameters = method.GetParameters();
Type paramType = parameters[0].ParameterType;
value = (string)method.Invoke(null, new[] { value });
}
}
如何将value
投射到paramType
? value
是string
,paramType
可能只是int
,string
或float
等基本类型。如果不能进行转换,我很高兴抛出异常。
答案 0 :(得分:73)
您使用的类型都是IConvertible
。因此,您可以使用ChangeType
。
value = Convert.ChangeType(method.Invoke(null, new[] { value }), paramType);
答案 1 :(得分:14)
你可以动态;例如:
using System;
namespace TypeCaster
{
class Program
{
internal static void Main(string[] args)
{
Parent p = new Parent() { name = "I am the parent", type = "TypeCaster.ChildA" };
dynamic a = Convert.ChangeType(new ChildA(p.name), Type.GetType(p.type));
Console.WriteLine(a.Name);
p.type = "TypeCaster.ChildB";
dynamic b = Convert.ChangeType(new ChildB(p.name), Type.GetType(p.type));
Console.WriteLine(b.Name);
}
}
internal class Parent
{
internal string type { get; set; }
internal string name { get; set; }
internal Parent() { }
}
internal class ChildA : Parent
{
internal ChildA(string name)
{
base.name = name + " in A";
}
public string Name
{
get { return base.name; }
}
}
internal class ChildB : Parent
{
internal ChildB(string name)
{
base.name = name + " in B";
}
public string Name
{
get { return base.name; }
}
}
}