chargement du datagridview a travers datareader

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je travaille sur une base de données access. je veus afficher les données d'un datareader dans un datagridview j'ai ecris le code suivant:

VB

cnxstr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\compaq\Desktop\Emploi.mdb;"
       cnx = New OleDb.OleDbConnection
       cnx.ConnectionString = cnxstr
       cnx.Open()


       Dim myReader1 As OleDb.OleDbDataReader = cmd1.ExecuteReader

       sql1 = select salle, jour, HD  from etudiant where filiere="'&combobox1.selecteditem &"'"
      
       cmd1 = New OleDb.OleDbCommand

       cmd1.Connection() = cnx
       cmd1.CommandText = sql1

     Dim myreader As OleDb.OleDbDataReader = cmd1.ExecuteReader
       If myReader.HasRows = True Then
           MsgBox("bien")

           While (myReader.HasRows)
               DataGridView1.DataSource = myReader

                  End While
             Else
                   MsgBox("nooooooooooooooon")
           End While
       End If
       cnx.Close()
j'ai verifié que la datareader contient des données mais j'arrive pas à les affiché sur le datagrid.est ce que mon code monque quelques choses?
pouvez vous m'aider s'il vous plait.
merci d'avance

Posted 9-May-11 0:25am

saadouli

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Sandeep Mewara 9-May-11 6:52am

English please!

1 solution

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Wayne Gaylard · Answer 1 · 2011-05-09T01:14:00

If don't really understand correctly what you are asking, but the problem with the code is that you cannot bind directly to a DataReader, you would need to create a DataTable with the reader and then bind the grid to the DataTable, something like this

VB

Dim myreader As OleDb.OleDbDataReader = cmd1.ExecuteReader
        If myreader.HasRows = True Then
            MsgBox("bien")
            While (myreader.HasRows)
                Dim dt As DataTable = New DataTable()
                dt.Load(myreader)
                DataGridView1.DataSource = dt.DefaultView
            End While
        Else
            MsgBox("nooooooooooooooon")
        End If

Hope this helps.