如何申报一般事件在C＃泛型委托 [英] How to declare generic event for generic delegate in c#

问题描述

我有一个用户控制，处理文件上传。我已经定义了一个委托如下：

 公共委托无效FileUploadSuccess＆LT; T＆GT;（吨价，FileUploadType F）
 

值可以是一个字符串和字节数组。 FileUploadType是一个枚举告诉这类型的文件被上传。

现在我已经宣布在用户控件一个事件，以提高这一点。

 公共事件FileUploadSuccess＆LT;字符串＆GT; successString; //如果我想要一个文件名

公共事件FileUploadSuccess＆LT;字节[]＆GT; successStringImage; //如果我想要一个byte [上传图像]
 

我想要的是一个普通的事件

 公共事件FileUploadSuccess＆LT; T＆GT; successString。
 

解决方案

除非泛型类型的一部分​​（即

 类Foo＆LT; T＆GT; {公共事件SomeEventType＆LT; T＆GT; SomeEventName; }
 

）有没有这样的东西作为通用属性，字段，事件，索引或经营者（只有泛型类型和泛型方法）。可以包含类型在这里是通用的？

I have a user control which deals with fileupload. I have defined a delegate as follows

public delegate void FileUploadSuccess<T>(T value,FileUploadType F)

value can be a string as well as byte array. FileUploadType is an enum which tells which type of file was uploaded.

Now i have declared a event in usercontrol to raise this.

public event FileUploadSuccess<string> successString;   //In case i want a file name

public event FileUploadSuccess<Byte[]> successStringImage;  // In case i want a byte[] of uploaded image

What i wanted was a generic event

public event FileUploadSuccess<T> successString. 

解决方案

Except as part of generic types (i.e.

class Foo<T> { public event SomeEventType<T> SomeEventName; }

) there is no such thing as generic properties, fields, events, indexers or operators (only generic types and generic methods). Can the containing type here be generic?

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