C# 返回动态对象
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Return dynamic object
提问by TheWebGuy
I have a simple data layer routine that performs a password update, the user passes in the following:
我有一个执行密码更新的简单数据层例程，用户传入以下内容：
- Current Password, New Password, Confirm New Password.
- 当前密码、新密码、确认新密码。
In my data layer (proc) checks a couple things such as:
在我的数据层 (proc) 中检查几件事，例如：
- Is the current password correct?
- Is the new password and confirm password correct?
- Has the new password been assigned in the past?
- 当前密码是否正确？
- 新密码和确认密码是否正确？
- 过去是否分配过新密码？
And so on...
等等...
Now I know I can simply create a class and returned a couple booleans:
现在我知道我可以简单地创建一个类并返回几个布尔值：
public class UpdatePasswordResponse{
public bool CurrentPasswordCorrect {get;set;}
....(and so on)
}
But is there a way I can dynamically return that information to the biz layer in properties instead of creating a new class everytime (for every data layer routine)? I seem to remember thinking this was possible. I am pretty sure I read it somewhere but don't remember the syntax, can someone help me?
但是有没有一种方法可以将该信息动态返回到属性中的 biz 层，而不是每次都创建一个新类（对于每个数据层例程）？我似乎记得我认为这是可能的。我很确定我在某处读过它但不记得语法，有人可以帮助我吗？
采纳答案by Randolpho
You can do this in .NET 4 with the use of the dynamickeyword.
您可以在 .NET 4 中使用dynamic关键字来执行此操作。
The class you will want to return would be an ExpandoObject.
您要返回的类将是ExpandoObject。
Basically, follow this pattern:
基本上，请遵循以下模式：
public object GetDynamicObject()
{
dynamic obj = new ExpandoObject();
obj.DynamicProperty1 = "hello world";
obj.DynamicProperty2 = 123;
return obj;
}
// elsewhere in your code:
dynamic myObj = GetDynamicObject();
string hello = myObj.DynamicProperty1;
回答by Mattias ?slund
If you just want to dynamically create a class you write:
如果你只想动态创建一个你写的类：
public object MyMethod()
{
var result = new { Username = "my name", Password = "the password" };
return result;
}
