在泛型方法中调用重载方法 [英] calling an overloaded method in generic method

问题描述

class Test
{
    public BinaryWriter Content { get; private set; }
    public Test Write<T> (T data)
    {
        Content.Write(data);
        return this;
    }
}

它不会编译.

1. The best overloaded method match for 'System.IO.BinaryWriter.Write(bool)' has some invalid arguments
2. Argument 1: cannot convert from 'T' to 'bool'

似乎Test.Write总是试图调用BinaryWriter.Write(bool).有什么建议吗?

it seems like Test.Write is always trying to call BinaryWriter.Write(bool). any suggestions?

推荐答案

重载解析发生在编译时，在这种情况下，关于T的消息一无所知，因此没有重载适用.

Overload resolution happens at compile-time, and in this case nothing is known about T, so no overload is applicable.

   class Test
    {
        public BinaryWriter Content { get; private set; }
        public Test Write<T>(T data)
        {
            Content.Write((dynamic)data);
            return this;
        }
    }

但是，这当然可能会带来一些问题.例如，如果将DateTime发送到该方法，则appliction可以正常编译.但是，它将引发异常.

But of course it could make some problems. For example, appliction will compile fine, if you will send DateTime to the method. But, it will throw exception.

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