Confirm ok/cancel in Javascript in Asp.net

Confirm ok/cancel in Javascript in Asp.net


function askConfirm()
{
    if (confirm("Are you sure want to overwrite the file")) {
    }
    else {

        return false;
    }


Calling js from server side coding in Asp.net

 ScriptManager.RegisterStartupScript(this, GetType(), "YourUniqueScriptKey", "askConfirm();", true);