Add event client side handler dynamically in UI for ASP.NET AJAX Input

Harry Kable

19 posts

Member since:
Jan 2010

Posted 26 Apr 2010 Link to this post

Hi
I am creating RadTextBox and RadComboBoc controls dynamically from information stored in a database.
Can you please expalin how I can wire up a client side event as each control is created. I am mainly using the OnValueChanged and OnClientSelectedIndexChanged events, respectively.
Could I have answered this myself from the online help?
Regards
Harry Kable

Shinu

17764 posts

Member since:
Mar 2007

Posted 26 Apr 2010 Link to this post

Hello Harry,

Here is the code snippet that I tried in my application in order to attach client events to RadTextBox/RadComboBox when created dynamically. Give a try with this approach.

CS:

    
            protected void Page_Load(object sender, EventArgs e) 
        
             { 
        
               RadTextBox textbox = new RadTextBox(); 
        
               textbox.ClientEvents.OnValueChanged = "ValueChanged";//attaching client side events 
        
               this.form1.Controls.Add(textbox); 
        
               RadComboBox combo = new RadComboBox(); 
        
               combo.DataTextField = "user_role"; 
        
               combo.DataValueField = "user_role"; 
        
               combo.DataSourceID = "SqlDataSource2"; 
        
               combo.OnClientSelectedIndexChanged = "ClientSelectedIndexChanged";//attaching client side events 
        
               this.form1.Controls.Add(combo); 
        
            }

JAVA SCRIPT:

    
            <script type="text/javascript"> 
        
                function ClientSelectedIndexChanged(sender, args) { 
        
                    alert("ClientSelectedIndexChanged fired"); 
        
                } 
        
                function ValueChanged(sender, args) { 
        
                    alert("ValueChanged fired"); 
        
                } 
        
            </script>

Regards,
Shinu.

Harry Kable

19 posts

Member since:
Jan 2010

Posted 26 Apr 2010 Link to this post

Hi Shinu
Thank you so much for your quick response.
The answer is much simplier than I expected.
I guess to become a master takes time.
Regards
Harry Kable