C# 反序列化期间未找到构造函数？
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Constructor not found during deserialization?
提问by Dave Van den Eynde
Given the following example:
给出以下示例：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
namespace SerializationTest
{
[Serializable]
class Foo : Dictionary<int, string>
{
}
class Program
{
static void Main(string[] args)
{
Foo foo = new Foo();
foo[1] = "Left";
foo[2] = "Right";
BinaryFormatter formatter = new BinaryFormatter();
MemoryStream stream = new MemoryStream();
formatter.Serialize(stream, foo);
stream.Seek(0, SeekOrigin.Begin);
formatter.Deserialize(stream);
}
}
}
In the last line, a SerializationException is thrown because the formatter can't find the constructor to Foo. Why is that?
在最后一行中，由于格式化程序找不到 Foo 的构造函数，因此抛出了 SerializationException。这是为什么？
采纳答案by Michael Piendl
Append the following code lines in the class Foo
在 Foo 类中添加以下代码行
public Foo() {
}
public Foo(SerializationInfo info, StreamingContext context) : base(info, context) {
}
The class needs an constructor with the relevant serialisation parameters.
该类需要一个带有相关序列化参数的构造函数。
