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Call Javascript From Code Behind In Asp.Net

Software Requirement

Prerequisite Knowledge

  1. How to create a project using visual studio?
  2. Basic knowledge about basic controls like button etc and their events.

Steps Of Execution

  1. Create a new project
  2. Add controls to the page
  3. Add JavaScript code in code behind

Create A New Project

Picture showing the project structure of
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Add Controls To The Page

Picture showing the web page with the button control
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Add Javascript Code In Code Behind

using System;

public partial class _Default: System.Web.UI.Page {
	protected void Page_Load(object sender, EventArgs e) {

	protected void Button1_Click(object sender, EventArgs e) {
		this.ClientScript.RegisterStartupScript(this.GetType(), "ALERTMESSAGE", "alert('Button clicked')", true);

  1. Type – Type of start up script to register
  2. Key – This is the key of the script to register
  3. Script – JavaScript which you want to register.
  4. AddScripttags – It is a Boolean value (when set to true) ensures that script is added between the script tags.


Picture showing the alert message when user clicks on the button
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Picture showing the rendered script in view code
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Posted By  -  Karan Gupta
Posted On  -  Thursday, May 2, 2013


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