Fire Javascript function OnLoad but not postbacks... 1

[checkai]

I have a javascript function that grabs values from it's parent page and puts them in text boxes...I need that code to only run onload but not on any postbacks...right now it runs on all postbacks because the function call is in the body onload event....

dlc

 

[cappmgr]

You could still call it in the body onload and have it check a hidden field that has it's value set on the first postback. If the field is set the script does nothing.
Marty

 

[tgreer]

This works for me. Instead of using the JavaScript "onload" in the body tag, register the script server-side, only if the page is not loading via PostBack:

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 startupscript
{
	/// <summary>
	/// Summary description for WebForm1.
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button Button1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// Put user code to initialize the page here
			if (!IsPostBack)
			{
				Page.RegisterStartupScript("startup",@"<script>alert('I run once.')</script>");
			}
		}
		#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);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			// submit button for the form.
		}
	}
}

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Thomas D. Greer

http://www.tgreer.com

Providing PostScript & PDF
Training, Development & Consulting

 

[checkai]

don't know why i didn't think of that...all my ideas were very complex and unnecessary...

thanks...