<form id="custform" action="updategenre.php" method="post">
    <input type="hidden" id="GenreID" name="GenreID" value="<?php echo $GenreID?>">
    
    <div class="row"> 
        <div class="col-md-6 mb-3">
            <label for="GenrName">GenreName</label>
            <input type="text" class="form-control" id="GenrName" name="GenrName" placeholder="Enter Genre" value="<?php echo $GenreName?>" required="true">
        </div>
    </div>


    <div class="row">
        <div class="col-md-4">
            <?php if ($GenreID == 0)  {?>
                <input class="btn btn-success" type="submit" value="Create">
            <?php  } else {?>
                <input class="btn btn-success" type="submit" value="Update">
            <?php } ?>
            <input class="btn btn-warning" type="submit" onclick="form.action='index.php'" 
                   value="Cancel" formnovalidate>
        </div>					
    </div>	
</form>