将“句柄”从VB.NET迁移到C＃

问题描述

我将一些代码从VB.NET迁移到C＃（3.5）。

我发现如下结构：

pre> 公共事件DataLoaded（ByVal sender As Object，ByVal e As EventArgs）

受保护的子Mag_Button_Load_Click（ByVal sender As Object，ByVal e As EventArgs）句柄Mag_Button_Load.C​​lick
[..]
RaiseEvent DataLoaded（Me，EventArgs.Empty）
End Sub
[..]

'其他类
Private Sub LoadData（ByVal sender As Object，ByVal e As System.EventArgs）处理oData.DataLoaded
[..]
End Sub


将这种行为转换为C＃最简单的方法是什么？

解决方案

我建议您先使用作为开始。

C＃没有通过像VB.NET这样的Handles关键字自动附加事件处理程序。

 code> // EV entHandler声明
 public event EventHandler DataLoaded; 
 protected void Mag_Button_Load_Click（object sender，EventArgs e）
 {
 
 //提升事件
如果（DataLoaded！= null）{
 DataLoaded ，EventArgs.Empty）; 
} 
} 
  

此外，您需要将事件处理程序分配给这样的对象：

  Button1.Click + = Button1_Click; 
 
 protected void Button1_Click（object sender，EventArgs e）
 {
 // do something。 
} 
  

然而，C＃确实有这样做的简洁能力：

  Button1.Click + =（sender，e）=> 
 {
 //做某事
} 
  

I'm migrating some code from VB.NET to C# (3.5).

I find structures like:

Public Event DataLoaded(ByVal sender As Object, ByVal e As EventArgs)

Protected Sub Mag_Button_Load_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Mag_Button_Load.Click
[..]
        RaiseEvent DataLoaded(Me, EventArgs.Empty)
End Sub
[..]

'Other Class
Private Sub LoadData(ByVal sender As Object, ByVal e As System.EventArgs) Handles oData.DataLoaded
[..]
End Sub

What is the most straightforward way to translate such behaviour to C#?

解决方案

I recommend using the Telerik Code Converter as a start.

C# does not have that easy automatic attaching of event handlers by means of the "Handles" keyword like VB.NET does.

//EventHandler declaration
public event EventHandler  DataLoaded;
protected void Mag_Button_Load_Click(object sender, EventArgs e)
{

    //Raise Event
    if (DataLoaded != null) {
        DataLoaded(this, EventArgs.Empty);
    }
}

Also, You need to assign your event handlers to the objects like this:

Button1.Click += Button1_Click;

protected void Button1_Click(object sender, EventArgs e)
{
  //do something.
}

However C# does have the succinct ability of doing this as well:

Button1.Click += (sender, e)=>
{
    //do something
}

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