C# Winforms 用户控件自定义事件
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原文地址: http://stackoverflow.com/questions/2188059/
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Winforms user controls custom events
提问by Kevin
Is there a way to give a User Control custom events, and invoke the event on a event within the user control. (I'm not sure if invoke is the correct term)
有没有办法给用户控件自定义事件，并在用户控件内的事件上调用该事件。（我不确定 invoke 是否正确）
public partial class Sample: UserControl
{
public Sample()
{
InitializeComponent();
}
private void TextBox_Validated(object sender, EventArgs e)
{
// invoke UserControl event here
}
}
And the MainForm:
和主窗体：
public partial class MainForm : Form
{
private Sample sampleUserControl = new Sample();
public MainForm()
{
this.InitializeComponent();
sampleUserControl.Click += new EventHandler(this.CustomEvent_Handler);
}
private void CustomEvent_Handler(object sender, EventArgs e)
{
// do stuff
}
}
采纳答案by Ed S.
Aside from the example that Steve posted, there is also syntax available which can simply pass the event through. It is similar to creating a property:
除了 Steve 发布的示例之外，还有可用的语法可以简单地传递事件。它类似于创建一个属性：
class MyUserControl : UserControl
{
public event EventHandler TextBoxValidated
{
add { textBox1.Validated += value; }
remove { textBox1.Validated -= value; }
}
}
回答by Steve Danner
I believe what you want is something like this:
我相信你想要的是这样的：
public partial class Sample: UserControl
{
public event EventHandler TextboxValidated;
public Sample()
{
InitializeComponent();
}
private void TextBox_Validated(object sender, EventArgs e)
{
// invoke UserControl event here
if (this.TextboxValidated != null) this.TextboxValidated(sender, e);
}
}
And then on your form:
然后在你的表格上：
public partial class MainForm : Form
{
private Sample sampleUserControl = new Sample();
public MainForm()
{
this.InitializeComponent();
sampleUserControl.TextboxValidated += new EventHandler(this.CustomEvent_Handler);
}
private void CustomEvent_Handler(object sender, EventArgs e)
{
// do stuff
}
}
