ASP.NET

 cn.Open();
       SqlDataAdapter da = new SqlDataAdapter(@"DECLARE @MATIERE nvarchar(max)
SELECT @MATIERE =
  STUFF(
  (
  select distinct ',[' + LIBELLE_MATIERE + ']'
  from MATIERE where CODE_MODULE =11
  for xml path('')
 ),
 1,1,'')

DECLARE @SQL nvarchar(max)
SELECT @SQL = N'
select
 *
from (

  SELECT     ETUDIANT.NUM_INSCRIPTION, ETUDIANT.NOM_PRENOM_ETUDIANT_ARABE,EXAMEN.CODE, 
 EXAMEN.NOTE, 
                     MATIERE.LIBELLE_MATIERE
FROM         ETUDIANT INNER JOIN
                      EXAMEN ON ETUDIANT.NUM_INSCRIPTION = EXAMEN.NUM_INSCRIPTION INNER JOIN
                      CAPITALISE_MODULE ON 
                      ETUDIANT.NUM_INSCRIPTION = CAPITALISE_MODULE.NUM_INSCRIPTION INNER JOIN
                      MATIERE ON EXAMEN.CODE_MATIERE = MATIERE.CODE_MATIERE INNER JOIN
                      MODULE ON CAPITALISE_MODULE.CODE_MODULE = MODULE.CODE_MODULE 
                      AND MATIERE.CODE_MODULE = MODULE.CODE_MODULE
WHERE      (CAPITALISE_MODULE.CODE_MODULE = 11) AND 
                      (CAPITALISE_MODULE.CODE_TYPE_RELATION_MODULE = 1)
) Data
PIVOT (
 SUM(NOTE)
 FOR LIBELLE_MATIERE
 IN (
  ' + @MATIERE + '
 )
) PivotTable
'

exec sp_executesql @SQL

", cn);
       DataTable dt = new DataTable();
       da.Fill(dt);
       cn.Close();
 
       Response.Clear();
       Response.ContentType = "application/vnd.ms-excel";
       string sep = "";
       foreach (DataColumn dc in dt.Columns)
       {
              Response.Write(sep + dc.ColumnName);
              sep = "\t";
       }
       Response.Write("\n");
 
       int i;
       foreach (DataRow dr in dt.Rows)
       {
              sep = "";
              for (i = 0; i < dt.Columns.Count; i++)
              {
                     Response.Write(sep + dr[i].ToString());
                     sep = "\t";
              }
              Response.Write("\n");
       }
 
}


   
}

<asp:Textbox EnableViewState="false" />