如何将子接口列表转换为父接口列表 [英] How to convert child interface list to parent interface list

问题描述

class AttachToObjectData：IData



我有这两个列表

m_attachObjectDataListToProcess = new List< attachtoobjectdata>（）;

createAndCheckInObjectDataList = new List< idata>（）;



i有一个函数，我想把IData作为输入。



所以我想转换List< attachtoobjectdata>列表< idata>





例如：updateDocument（IData）



现在这个电话我希望数据应该在IData



Regars

Bhushan



我尝试了什么：



我试过

m_attachObjectDataListToProcess.Convert：不工作

class AttachToObjectData : IData

I have this two list
m_attachObjectDataListToProcess = new List<attachtoobjectdata>();
createAndCheckInObjectDataList = new List<idata>();

i have one function where i want to give IData as input.

so for that i want to convert List<attachtoobjectdata> to List<idata>


for example : updateDocument(IData)

now for this call i want data should be in IData

Regars
Bhushan

What I have tried:

I tried
m_attachObjectDataListToProcess.Convert : Not working

m_attachObjectDataListToProcess

.Cast：不工作

推荐答案

更改<$ c的定义$ c> m_attachObjectDataListToProcess to：

Change the definition of m_attachObjectDataListToProcess to:

m_attachObjectDataListToProcess = new List<idata>();

然后你可以将 AttachToObjectData 对象添加到 m_attachObjectDataListToProcess as AttachToObjectData 实现 idata 界面。现在你可以做你想做的事了。

Then you can add AttachToObjectData objects to m_attachObjectDataListToProcess as AttachToObjectData implements idata interface. now you can do what you are trying to do.

如果你有这样的界面

If you have an interface like this

public interface IData
{
    string Value { get; set; }
}

和实现此接口的类

and a class implementing this interface

public class Data : IData
{
    public string Value { get; set; }
}

和这样的数据列表

and a list of Data like this

var dataList = new List<Data>
{
    new Data {Value = "A"},
    new Data {Value = "B"}
};

你可以像这样投射到IData：

you could cast to IData like this:

var iDataList = dataList.Cast<IData>();

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