How to call client script from User Control in ASP.Net?

Question

I have read many reference for this question but not getting result. So, I thought let me try to explain my scienario here.

This is my 3 script which is in view.ascx control. I want to call it in .cs file function and in click event.

view.ascx

<script type="text/javascript">
function startLoading() {
    alert("load start");
    var el = jQuery(".scp-entry-header");
    App.blockUI(el);
}


function stopLoading() {
    alert("load end");
    var el = jQuery(".scp-entry-header");
    App.unblockUI(el);
}

function getCalendarData() {
    alert("calendarcalled");
}
</script>

view.ascx.cs

//ViewData button click
protected void btnGetData_Click(object sender, EventArgs e)
{
    //How to call startLoading function here?
    process from database;
    //How to call stopLoading function here?
}

//simple function call
protected void showCalendar()
{
    //How to call getCalendarData function here?
}

I have read about RegisterScript but not getting result. I don't understand where to RegisterScript and how to call it in function.

Can anybody please suggest me in detail how can I call javascript function here?

Answer 1

Try This

 protected void btnGetData_Click(object sender, EventArgs e)
 {
        //How to call startLoading function here?
        process from database;
        //How to call stopLoading function here?
       Page.ClientScript.RegisterStartupScript(this.GetType(), "script", "startLoading", true);
 }  

or

 ScriptManager.RegisterStartupScript(Page, Page.GetType(), "key", "<script>alert('Hello.')</script>", false);