remove autopostback from button

[tiziacaia]

how can I remove autopostback from a button? i want change the document location cliccking on the button but my location don't change. I don't understand why! somebody can help me? happy new year to all and thanks a lot for help! -------------->here my code of html: <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebApplication2.WebForm1" %> WebForm1 function change(){ alert("qui"); document.location.href="ciao.htm"; }

-------------->and here the codebehind: using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; namespace WebApplication2 { /// /// Summary description for WebForm1. /// public class WebForm1 : System.Web.UI.Page { protected System.Web.UI.WebControls.DropDownList DropDownList1; protected System.Web.UI.WebControls.Button Button1; private void Page_Load(object sender, System.EventArgs e) { // Put user code to initialize the page here Button1.Attributes.Remove("AutoPostBack"); Button1.Attributes.Add("OnClick","change();"); } #region Web Form Designer generated code override protected void OnInit(EventArgs e) { // // CODEGEN: This call is required by the ASP.NET Web Form Designer. // InitializeComponent(); base.OnInit(e); } /// /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// private void InitializeComponent() { this.Load += new System.EventHandler(this.Page_Load); } #endregion } }

[minhpc_bk]

Hi there, Because you use a WebControls.Button control, then at the client side it is rendered as a submit button, so you can't cancel the submit action as you are doing now to go to another page. In this case, there are a couple of ways to do that: + You simply cancel the submit action by adding the onsubmit="return false;" for the form element. This will prevent the page from going back to the server even you use other controls that can cause the page to submit.

<form id="Form1" onsubmit="return false;" method="post" runat="server">

+ You simply cancel the submit action caused by the button by adding "return false;" after the change() function, the sample code is something like this:

Button1.Attributes.Add("onclick","change(); return false;");

+ You simply use an html button control instead of a WebControls.Button control:

<INPUT type="button" value="Change" onclick="change();">

[tiziacaia]

thanks thanks thanks a lot! I choose the second way.