Cita:
Iniciado por webankenovi 
no sera
mysql_query("DELETE FROM alumnos WHERE no_control='$numcon'",$result)
numcon en vez de nombonb
ya logre corregir el problema cerrando mi primera condicion if antes de hacer la segunda aqui dejo el codigo por si a alguien le sirve
Código:
<html>
<head>
<title>Eliminar Alumno</title></head>
<body background="fondo.jpg">
<script type="text/javascript">var MenuLinkedBy="AllWebMenus [4]",awmMenuName="menu",awmBN="854";awmAltUrl="";</script><script charset="UTF-8" src="menu.js" type="text/javascript"></script><script type="text/javascript">awmBuildMenu();</script>
<br><br><br>
<form ACTION="<?php echo $_SERVER['PHP_SELF']; ?>" METHOD="POST">
<table align="center">
<tr>
<td colspan="2" align="center">Eliminar Alumnos del Sistema</td>
</tr>
<tr>
<td align="right">Numero de Control </td>
<td ><input type="text" name="nomconb" size="82"></td>
</tr>
<tr>
<td colspan="2">
<p align="center"><input type="submit" name="B1" value="enviar"><input type="reset" name="B2" value="cancelar"></td>
</tr>
</table>
<hr />
<?php
$link = mysql_connect("localhost","root","")
or die ("no se ha podido conectar");
mysql_select_db("biblioteca")
or die("Error al tratar de selecccionar esta base");
if (isset($_POST['B1']))
{
$nomconb=$_POST['nomconb'];
$result = mysql_query("SELECT * FROM alumnos where no_control='$nomconb'",$link)or die(mysql_error());
while($row = mysql_fetch_array( $result )){
?>
<table align="center">
<tr>
<td >
<p align="right">Numero de Control</td>
<td align="left" ><input type="text" name="numcon" size="82"value="<?php echo $row['no_control']?>"></td>
</tr>
<tr>
<td align="right">Nombre</td>
<td align="left"><input type="text" name="nom" size="82"value="<?php echo $row['nombre']?>"></td>
</tr>
<tr>
<td align="right">Direccion</td>
<td align="left"><input type="text" name="dir" size="82"value="<?php echo $row['dir']?>"></td>
</tr>
<tr>
<td align="right">Telefono</td>
<td align="left"><input type="text" name="tel" size="82" value="<?php echo $row['tel']?>"></td>
</tr>
<tr>
<td align="right">Carrera</td>
<td align="left"><select name="car">
<option <?php if($row['carrera']=='Ingenieria en Sistemas Computacionales'){echo('selected');} ?>>Ingenieria en Sistemas Computacionales</option>
<option <?php if($row['carrera']=='Ingenieria Informatica'){echo('selected');} ?>>Ingenieria Informatica</option>
<option <?php if($row['carrera']=='Ing Agronomia Sustentable'){echo('selected');} ?>>Ing Agronomia Sustentable</option>
<option <?php if($row['carrera']=='Ingenieria Industrial'){echo('selected');} ?>>Ingenieria Industrial</option>
</select></td>
</tr>
<tr>
<td align="right">Semestre</td>
<td align="left"><select name="sem">
<option <?php if($row['sem']=='1'){echo('selected');} ?>>1</option>
<option <?php if($row['sem']=='2'){echo('selected');} ?>>2</option>
<option <?php if($row['sem']=='3'){echo('selected');} ?>>3</option>
<option <?php if($row['sem']=='4'){echo('selected');} ?>>4</option>
<option <?php if($row['sem']=='5'){echo('selected');} ?>>5</option>
<option <?php if($row['sem']=='6'){echo('selected');} ?>>6</option>
<option <?php if($row['sem']=='7'){echo('selected');} ?>>7</option>
<option <?php if($row['sem']=='8'){echo('selected');} ?>>8</option>
<option <?php if($row['sem']=='9'){echo('selected');} ?>>9</option>
<option <?php if($row['sem']=='10'){echo('selected');}?>>10</option>
<option <?php if($row['sem']=='11'){echo('selected');}?>>11</option>
<option <?php if($row['sem']=='12'){echo('selected');}?>>12</option>
</select></td>
</tr>
<tr>
<td align="right">Turno</td>
<td align="left"><select size="1" name="tur">
<option <?php if($row['turno']=='Matutino'){echo('selected');} ?>>Matutino</option>
<option <?php if($row['turno']=='Vespertino'){echo('selected');} ?>>Vespertino</option>
</select></td>
</tr>
<tr>
<td align="right"></td>
<td align="left"> </td>
</tr>
<tr>
<td colspan="2">
<p align="center"><input type="submit" name="Eliminar" value="Eliminar"></td>
</tr>
</table>
<?php
}
}
if (isset($_POST['B1']))
{
$nomconb=$_POST['nomconb'];
$result = mysql_query("SELECT * FROM alumnos where no_control='$nomconb'")or die(mysql_error());
mysql_query("DELETE FROM alumnos WHERE no_control='$nomconb'")
or die("no se a podido eliminar el registro");
echo("registro eliminado");
mysql_close($link);
}
?>
</form>
</body>
</html>
Muchas Gracias por tu ayuda
