Call Controller Action on TextChange or Keydown using jQuery in ASP.Net MVC

I got solution through this

    $('#_Request.PRNO').change(function () {
        alert('sds');
        
        $.ajax({
            
        url: '@Url.Action("AddGrid", "PurchaseOrder")',
        type: 'post',
        data: {
            Text: $('#_Request.PRNO').val()
        },
        success: function (_result) {
            $('#_Request.PRNO').val(_result.foo);
        }
     });