Fetching data from MySQL database using PHP Displaying it in a form

- 
<html>
<head>
<title> Delegate edit form</title><br />
</head>
<body>
Delegate update form  <p>
<?php
$usernm="root";
$passwd="";
$host="localhost";
$database="swift";

//$Name=$_POST['Name'];
//$Username=$_POST['User_name'];
//$Password=$_POST['Password'];

mysql_connect($host,$usernm,$passwd);

mysql_select_db($database);

$sql = "SELECT * FROM usermaster WHERE User_name='$Username'";
$result = mysql_query ($sql) or die (mysql_error ());
while ($row = mysql_fetch_array ($result)){

$Name=$row['Name'];
$Username=$row['User_name'];
$Password=$row['User_password'];
}
?>

<form action="Delegate_update.php" method="post"

Name
<input type="text" name= "Name" value= "<?php echo $Name; ?> "size=10>
Username
<input type="text" name= "Username" value= "<?php echo $rowUsername; ?> "size=10>
Password
<input type="text" name= "Password" value= "<?php echo $rowPassword; ?>" size=17>
<input type="submit" name= "submit" value="Update">
</form>
<? php
?>
</p>
</body>
</html>

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