我正在努力获取能够在嵌套类上设置值的“对象”,并且我怀疑在设置之后我将如何操纵它。示例如下:
public class RegistryData {
public RegistryKey rk;
}
public static class RegistryKeys {
public static class Username {
public static RegistryData Data = null;
public static string DefaultValue = "MyUsername";
}
public static class Password {
public static RegistryData Data = null;
public static string DefaultValue = "MyPassword";
}
}
以下代码使用反射来获取数据字段,但我无法看到如何获取传递给FieldInfo.SetValue()的“对象”。
static void DoReflection()
{
Type type = typeof(RegistryKeys);
Type[] nestedTypeArray = type.GetNestedTypes(BindingFlags.Public | BindingFlags.Static);
foreach(Type t in nestedTypeArray)
{
FieldInfo field = t.GetField("Data"); // Obtain the Data field
// Issue 1: how to allocate the Data Field within the nested class
field.SetValue( ??? object ??? , new RegistryData()); <---
// Issue 2: how to access the new class within the nested class
field.GetValue( ??? what ??? ).rk = Registry.LocalMachine;
}
}
感谢。
答案 0 :(得分:0)
好的,事实证明,通过更多的研究(在Google中提问的方式略有不同),我找到了答案:
field.SetValue( null , new RegistryData());
((RegistryData)(field.GetValue(null))).rk = Registry.LocalMachine;
根据答案:Is it possible to set this static private member of a static class with reflection?
它在代码部分中说明:
// Normally the first argument to "SetValue" is the instance
// of the type but since we are mutating a static field we pass "null"
我不打算建议我明白这一点。但代码正在运行!我不会只是删除这个问题,而是在这里为其他人发布答案,因为我很难找到答案。