在asp.net中定义自定义事件的WebControl [英] define Custom Event for WebControl in asp.net

问题描述

我需要定义一个自定义控件3事件的OnChange ，的OnSave 和 OnDelete 。
我有一个 GridView控件和工作用其行。

I need to define 3 events in a Custom Control as OnChange, OnSave, and OnDelete. I have a GridView and work with its rows.

您可以帮我，告诉我这个code？

Can you help me and show me this code?

推荐答案

好文章，可以帮助你实现你的任务：

Good article which can help you to achieve your task:

自定义控件在Visual C＃.NET

Custom Controls in Visual C# .NET

第1步：中，如下所示控件创建事件处理程序

Step 1: Create the event handler in your control as below.

public event SubmitClickedHandler SubmitClicked;

// Add a protected method called OnSubmitClicked().
// You may use this in child classes instead of adding
// event handlers.
protected virtual void OnSubmitClicked()
{
    // If an event has no subscribers registered, it will
    // evaluate to null. The test checks that the value is not
    // null, ensuring that there are subscribers before
    // calling the event itself.
    if (SubmitClicked != null)
    {
        SubmitClicked();  // Notify Subscribers
    }
}

// Handler for Submit Button. Do some validation before
// calling the event.
private void btnSubmit_Click(object sender, System.EventArgs e)
{
    OnSubmitClicked();
}

第二步：利用在您注册控件的页事件。下面code将是你的页面，你的控件注册的一部分。如果你注册，它将被控制的提交按钮来触发。

Step 2 : Utilize the event in the page where you register your control. The following code is going to be part of your page where your control is registered. If you register it, it will be triggered by the submit button of the control.

// Handle the SubmitClicked Event
private void SubmitClicked()
{
    MessageBox.Show(String.Format("Hello, {0}!",
        submitButtonControl.UserName));
}

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