Winforms用户控制自定义事件

有没有办法提供用户控件自定义事件，并在用户控件中的事件上调用事件。 （我不确定调用是否是正确的术语）

public partial class Sample: UserControl { public Sample() { InitializeComponent(); } private void TextBox_Validated(object sender, EventArgs e) { // invoke UserControl event here } } 

和MainForm：

 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 } } 

Answer 1

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。 它类似于创建属性：

 class MyUserControl : UserControl { public event EventHandler TextBoxValidated { add { textBox1.Validated += value; } remove { textBox1.Validated -= value; } } } 

Answer 2

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); } } 

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 } }