/// <summary>/// 用户控件 /// </summary>public partial class UCMyControl : UserControl{//定义委托//EventArgs 可以自己定义参数的类型，一般情况下定义为(object sender，EventArgs e)public delegate void SelectedValueChanged(object sender, EventArgs e);//定义事件public event SelectedValueChanged SelectChangen;//当用户控件上的某个事件被触发的时候（或者进行某种操作的时候），触发自定义事件private void UCDDLPLDataAction_SelectedValueChanged(object sender, EventArgs e){
if (SelectChangen != null)
{
SelectChangen(this,new EventArgs());
}}}
/// <summary>/// 调用 /// </summary>public class UseUC{public UseUC(){UCMyControl uc = new UCMyControl();//添加事件uc.SelectChangen += new SelectedValueChanged(SelectedValueChanged);}public void SelectedValueChanged(object sender,EventArgs e){ MessageBox.Show("Test");}}
