How to call an event manually in C#?

Question

I have a USerControll in which i have a textbox. I use the usercontrol in my form, I want to do something when somebody presses enter on the textbox. how can I do it? if you

Answer 1

What you describe is called event bubbling. Here's an example:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="MyUserControl.ascx.cs" Inherits="MyUserControl" %>

---

public partial class MyUserControl : UserControl
{
 public event EventHandler UserControlTextBoxChanged;

 protected void TextBox1_TextChanged(object sender, EventArgs e) {
  if (UserControlTextBoxChanged != null)
   UserControlTextBoxChanged(sender, e);
 }
}

---

<%@ Page Language="C#" AutoEventWireup="True" Inherits="Default" CodeBehind="Default.aspx.cs" %>
<%@ Register Src="~/MyUserControl.ascx" TagName="MyUserControl" TagPrefix="uc1" %>

---

public partial class MyPage : Page {
 protected void ucMyUserControl_UserControlTextBoxChanged(object sender, EventArgs e) {
  // sender is ucMyUserControl.TextBox1
 }
}