Search box inside Add new record template

[RB]

In my Ragdrid, on click of Add New record, I added a template with a textbox and a button. In the textbox, after typing first 4 letters of a name, it should give matching name suggestions just like google does. For this purpose, in the onPrerender of the user control which contains the text box and button, I have added 
  

 AjaxControlToolkit.ToolkitScriptManager.RegisterClientScriptBlock(this, typeof(string), this._TbName.ClientID, "NameSearch('" + this._TbName.ClientID +"');", true);

But the NameSearch method is never called. Whereas, if the text box is placed outside the radgrid, this method is called!
Is there some other approach which needs to be used when this is being done in the add new record template?

[Radoslav]

Hello,

Could you please try using following code snippet and let me know if the issues still exists:

ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "NameSearch", "NameSearch('" + this._TbName.ClientID +"');", true);

Looking forward for your reply.

Regards,
Radoslav
Telerik