I have created an simple AjaxButton that will only call a method on the server-side code. There are no values sent to the server or back to the client. A new AjaxButton could serialize the form and send the data to the AjaxMethod.

Here is the code I used for a simple AjaxButton:

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Reflection;

namespace AJAXDemo.App_Code.Examples.Special
{
  [DefaultProperty("Text"),
    ToolboxData("<{0}:AjaxButton runat=server></{0}:AjaxButton>")]
  public class AjaxButton : System.Web.UI.HtmlControls.HtmlButton
  {
    public delegate void OnClickHandler();

    public OnClickHandler OnClick = null;

    private string nameOfMethod = "";

    private void Page_Load(object sender, EventArgs e)
    {
      if(OnClick != null)
      {
        if(OnClick.Method.GetCustomAttributes(typeof(AjaxPro.AjaxMethodAttribute), true).Length > 0)
          AjaxPro.Utility.RegisterTypeForAjax(OnClick.Target.GetType(), this.Page);

        nameOfMethod = AjaxPro.Utility.GetClientMethod(OnClick.Method);
      }
    }

    protected override void CreateChildControls()
    {
      base.CreateChildControls ();

      if(nameOfMethod != null && nameOfMethod.IndexOf(",") > 0)
      {
        this.Attributes.Add("onclick", "if(this.callback)" +
            nameOfMethod.Replace(",", ".") + "(this.callback.bind(this));" +
            " else " + nameOfMethod.Replace(",", ".") + "();");
      }
    }

    protected override void OnInit(EventArgs e)
    {
      this.Load += new System.EventHandler(this.Page_Load);
      base.OnInit (e);
    }
  }
}

I will put several simple controls to the next version of Ajax.NET Professional. Please visit this blog or my website at http://www.schwarz-interactive.de during the weekend for updates.

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