Server control Event Handler

[rashmi_ay]

Hello, I am learning asp.net and while working on it, I want to know the details about the Server Control Event Handler. I have one reference book, but it is not having more details about it. So, if you are having more details about it, then it will be helpful to me. So, reply about it.

[MindSpace]

SP.NET Server Control Event Model consist of the following important points:

• Event Set for Server Controls and Pages
• Postback and Non-Postback Events in Server Controls
• Forwarded Events
• Binding Events to Methods
• Bubbled Events
• Application and Session Events

[Modifier]

Hello, I am working on the Server Control Event Handler and getting the problem in following code:

this.OnSelectedIndexChanged = "test_SelectedIndexChanged";
 protected void test_SelectedIndexChanged(object sender, EventArgs ea)
        {
            .........
        }

Can anyone help me to find out the error.

[opaper]

Events raised by ASP.NET server controls work somewhat differently than events in traditional client forms or in client-based Web applications. The difference arises primarily because of the separation of the event itself from where the event is handled. In client-based applications, events are raised and handled on the client. In Web Forms pages, on the other hand, events associated with server controls are raised on the client but handled on the Web server by the ASP.NET page framework. For events raised on the client, the Web Forms control event model requires that the event information be captured on the client and an event message transmitted to the server, via an HTTP post. The page framework must interpret the post to determine what event occurred and then call the appropriate method in your code on the server to handle the event.

[Praetor]

Hello, It is quiet simple to make use of the Server control Event Handler. You can achieve it as follows:

     protected void Text_Changed(object sender,EventArgs ae)
      {
      TextBox textbox1 =null;
      textbox1 = (TextBox)sender;
      ......
      ......
      }

[Katty]

You can simply bind the dynamic control as below in c#

Button b1 = new Button;
b1.Text = "Click";
b1.Click += new System.EventHandler(ButtonClick);
Placeholder1.Controls.Add(b1);