Operation must use an updateable query. 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Data.OleDb.OleDbException: Operation must use an updateable query.

Source Error: 


Line 37:         //Salvo i dati nel DB
Line 38: 
Line 39:             InvioDati.Insert();
Line 40:             txtBody.Text = "";
Line 41:             txtNome.Text = "";
 

 

...

      //Salvo i dati nel DB

            InvioDati.Insert();
            txtBody.Text = "";
            txtNome.Text = "";
            txtTelef.Text = "";
            txtTo.Text = "";

    } 
</script>

<asp:AccessDataSource ID="InvioDati" runat="server" DataFile="~/App_Data/DBMail.mdb" InsertCommand="INSERT INTO [TabellaMail] ([Data], [Azienda], [Telefono], [Mail], [Body]) VALUES(?,?,?,?,?)" >
    <InsertParameters>
        <asp:ControlParameter ControlID="textToday" Name="Data" Type="string" />
        <asp:ControlParameter ControlID="txtNome" Name="Azienda" Type="string" />
        <asp:ControlParameter ControlID="txtTelef" Name="Telefono" Type="string" />   
        <asp:ControlParameter ControlID="txtTo" Name="Mail" Type="string" />
        <asp:ControlParameter ControlID="txtBody" Name="Body" Type="string" />
    </InsertParameters>
</asp:AccessDataSource>

  <connectionStrings>
    <add name="InvioDati" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=public/DBMail.mdb" providerName="System.Data.OleDb" />
  </connectionStrings>