Hi IMRAN SAROIA,
i am attaching a sample code for your understanding.
1> Create a new aspx Page.
2> Include Using System.IO on the page.
3> Add a button to the newly created aspx page
4> Paste this code in the Page_Load
private void Page_Load(object sender, System.EventArgs e)
{
StringBuilder myScript = new StringBuilder();
myScript.Append("<script language='Javascript'>");
myScript.Append(" function HelloWorld(){");
myScript.Append(" alert('Hello There From Hello World');");
myScript.Append("}");
myScript.Append("</script>");
this.RegisterStartupScript("MyScript", myScript.ToString());
Button1.Attributes.Add("onclick","javascript:HelloWorld();");
}
5> run the page.
HTH
Regards
Ashish M Bhonkiya