Call Javascript Function from Codebehind Events

If UdatePanel is there, then register to ScriptManager like below. Take care of parameters as they varies.
ScriptManager.RegisterStartupScript(Page, this.GetType(), "Alert", "alert('Hello');", true);

                  Actually Button on whose Click event I have written the code is present in the Update Panel. When I remove Button from the Update Panel its working fine.
 
  Why Its working this way. I want that button in the Update Panel itself.

Regards,
 
   VIkram

Hi,
Check that whether your browser has Javascript enabled.
Tools->InternetOptions->SecurityTab->Internet Icon->Custom Level Button->Scripting Section

Tools->InternetOptions->SecurityTab->Local Intranet Icon->Custom Level Button->Scripting Section

Thats weird... its working for me.

then you should try this one:

ScriptManager.RegisterStartupScript(this, Page.GetType(), "Alert", "window.alert('Hello');", true);

Thanks Christofel,
     
    I tried your solution but its not calling desired function. I just test it using following code:
 
  ClientScriptManager script = Page.ClientScript;

  script.RegisterStartupScript(this.GetType(), "Alert", "alert('Hello')", true);

  Its not showing me Message Box.

hi

protected void cmdSave_Click(object sender, EventArgs e)
{
    if ( condition)
    {
 string script = "";
 Page.RegisterClientScriptBlock("ClientScript", script);
    }
}

Hi Vikram,

you can use ClientScriptManager to call javascript function on your code behind.

Here i give you a simple example:

ClientScriptManager script = Page.ClientScript;

MyTextBox.Text = "Christofel"; //load your data here

script.RegisterStartupScript (this.GetType(), "Alert","alert(document.getElementById('MyTextBox').value)",true);

//calll your javascript function, then pass the parameter from your asp.net control.