手柄ContentPage母版事件 [英] Handle MasterPage event on ContentPage

问题描述

我有我的母版一个按钮，我想ContentPage以处理按钮的Click事件。这是我到目前为止有：

I have a button on my MasterPage and I want the ContentPage to handle the Click event of the button. Here's what I have so far:

//Event in MasterPage
public event EventHandler Search_Submit;

//ButtonClick event in MasterPage
protected void SearchButton_Click(object sender, EventArgs e)
    {
        if (Search_Submit != null)
        {               
            Search_Submit(this, EventArgs.Empty);
        }
    }


//EventHandler in Page_Init on ContentPage
Master.Search_Submit += new EventHandler(Master_Search_Submit);

//Search_Submit event in ContentPage
private void Master_Search_Submit(object sender, EventArgs e)
    {
        //Perform appropriate action...
    }

这所有的作品 - 不过，我想传递一个值与EventArgs的。我相信我需要创建一个自定义的EventArgs类继承于EventArgs并有我的自定义属性。然而，我当我这样做，我得到以下错误：对'Master_Search_Submit'匹配委托System.EventHandler不超载

This all works - however, I would like to pass a value with the EventArgs. I believe I need to create a custom EventArgs class that inherits from EventArgs and has my custom properties. However, my when I do that I get the following error: No overload for 'Master_Search_Submit' matches delegate 'System.EventHandler'.

推荐答案

您已经定义了你的活动，使用EventHandler委托。委托是指向一个功能，它定义了应对方法必须具有签名。为EventHandler委托的签名是：

You have defined your event to use the EventHandler delegate. A delegate is a pointer to a function, it defines the signature the responding method must have. The signature for the EventHandler delegate is:

delegate void EventHandler(object sender, EventArgs e);

在.NET 2.0有一个通用的EventHandler委托，允许您指定的EventArgs输入你想使用。

In .NET 2.0 there is a generic EventHandler delegate that allows you to specify the EventArgs type you would like to use.

public event EventHandler<MyEventArgs> Search_Submit;

现在你可以使用一个事件处理程序签名

Now you can use an event handler with the signature

void EventArgs<TArgs>(object sender, TArgs e) where TArgs: EventArgs

在你的情况，这将是：

void Master_Search_Submit(object sender, MyEventArgs e)

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